Benutzeranleitung / Produktwartung 6120 des Produzenten HP (Hewlett-Packard)
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Augu st 2009 Pr oCurve Ser i es 6 1 20 S w i tc hes Adv anced T r affi c M anagem ent Guide.
Hewle tt-Pa ckard Comp any 8000 Fo othills Bou levard, m/s 5 551 Roseville, Ca lifornia 95747-5 551 www.procurve.co m © Co pyrigh t 2009 Hewlet t-Pack ard Dev elopm ent Co mpany , L.P . The inform ation co ntained he rein is su bject to ch ange with- out notice.
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iii Contents Product Documentation About Your Switch Manual Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Printed Publications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Electronic Publications .
iv Intro ducti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 General VLAN Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Types of Static VLANs A vailable in the Switch .
v Deleting the Management VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53 Operatin g Notes for Man agement VLANs . . . . . . . . . . . . . . . . . . . 2-53 Voice VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi 4 Multiple Instance Span ning-Tree Opera tion Conten ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vii Displaying the MSTP Configurat ion . . . . . . . . . . . . . . . . . . . . . . . 4-54 Troublesh ooting an M STP Configura tion . . . . . . . . . . . . . . . . . . . . . . 4-58 Displa ying the Ch ange Hist ory of Ro ot Brid ges . . . . . . . . . . .
viii QoS Source-Port Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27 Assigning a Priority Based on Source-Port . . . . . . . . . . . . . . . . . . 5-27 Assigning a DSCP Policy Ba sed on the Source-Port . . . . . .
ix Product Documentation About Y our Sw itch Manual Set Note For the latest version of switch doc umen tation, please visit any of the foll ow- ing web sites: www .procur ve.com /manual s www.hp.com/go/ bladesy stem/d ocument ation h18004 .www1.hp .com/p roducts/ blade s/compo nents/c -class-te ch-insta lling.
x Software Feature Index This feature ind ex indica tes which manu al to consu lt for informa tion on a given s oftw are fea ture. Note Th is Index doe s not cover IPv6 capable soft ware features. Fo r informati on on IPv6 proto col operations a nd featur es (such as DHC Pv6, DNS for IPv 6, and Ping6), refer to the IPv6 Config uratio n Guid e .
xi Downloading Software X Event Log X Facto ry Default Settings X Flow Contro l (802.3x ) X File T ransfers X Frien dly Port Names X GVRP X Identi ty-Driven M anagem ent (IDM) X IGMP X Inter face A cc.
xii Port Monitorin g X Port Security X Port Stat us X Port T r unkin g (L ACP) X Port-Based Ac cess Contro l (802.1X) X Prot ocol V LAN S X Quali ty of Serv ice (QoS) X RADIUS Auth enticatio n and Acc.
xiii VLAN s X W eb Authenti cation RADI US Support X W e b-base d Authe ntic ation X We b U I X Intelligent Edge Software Features Manual Manage ment and Configura tion Adva nced T raffic Manage ment .
1-1 1 Getting St arted Contents Intro ducti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Convent ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1 1 Getting St arted Contents Intro ducti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Convent ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2 Getting Started Intr oduc tion Introduction This guide is inten ded for use with the HP P roCurve 6120 G/XG and 61 20GX switches. It descri bes how to use th e command lin e interface (CLI), Menu interfac e, and web browser t o configure, manage, mon itor , and troublesh oot switch op era - tion.
1-3 Getting Sta rted Conve ntion s Command Prompts In the de fault config uration, yo ur switch disp lays a CLI prompt si milar to the follo wing examp les: ProCurve 6120G/XG Blade Switch# ProCurve 6120XG Blade Switch# T o simp lify recogniti on, this guide uses P roCur ve to r epresen t command prompts.
1-4 Getting Started Source s for More Info rmation Sources for More Information For in formation about swit ch operat ion and f eatures not cover ed in t his guide , consult the following sou rces: .
1-5 Getting Sta rted Source s for More I nformation • file transfe rs, switch monitorin g, troubleshoo ting, and MAC a ddress manage ment ■ Advanced T raffic Management Guide —Use t his guide for info rmation on topics such as: • VLANs: Stat ic port-base d and protoc ol VLANs, and dy namic GVRP VLANs • spann ing-T ree: 802.
1-6 Getting Started Source s for More Info rmation Getting Documentation From the W e b T o obtai n the latest versions of documen tation and r elease not es for your switch, go to any of th e following we b sites: www .procur ve.com /manual s www.hp.
1-8 Getting Started Need Only a Quick St art? Figure 1-5. Button for Onboard Administrator I nterface On line Help Need Only a Quick Start? IP Addressing If you j ust want to give the switch an IP add.
1-9 Getting Sta rted To Set U p and Inst all the Swit ch in Your Netwo rk ■ Instructions for physically installin g the switch in your netwo rk ■ Quickl y as sign ing an IP addr ess a nd subnet mask, set a Manager pass- word, and (optiona lly) conf igure othe r basic fea tures.
2-1 2 Static V irtual LANs (VLANs) Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Intro ducti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2 Sta tic Vi rt ual LA Ns ( VLANs ) Conte nts 802.1Q VLAN Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40 Spec ial V LAN Type s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3 Static Vi rtual LANs (VL ANs) Overvi ew Overview This ch apter de scribes how t o conf igure and u se static , port-base d and protocol-ba sed VLA Ns on the swit ches co vered in this g uide.
2-4 Sta tic Vi rt ual LA Ns ( VLANs ) Intr oduc tion Introduction VLAN Featu res VLANs enable y ou to group users by logical fun ction instead of physical location.
2-5 Static Vi rtual LANs (VL ANs) Intr oduc tion T ypes of Static VLANs A vailable in the Switch Port-Based VLANs This type of stat ic VLAN creates a spec ific laye r -2 br oadcast dom ain co m- prise d of member ports that b ridge IPv4 t raffic amon g themselves.
2-6 Sta tic Vi rt ual LA Ns ( VLANs ) Termin olog y Note In a multiple- VLAN envir onment that i ncludes some older switch models there may be pr oblems rel ated to the sa me MAC a ddress appe aring on different ports and VLANs on the same switch. In such cases the solu tion is to impose some cablin g and VLAN rest rictions.
2-7 Static Vi rtual LANs (VL ANs) Static VLAN Ope ration Static VLAN Operation A group of n etwork ed port s assigned to a V LAN fo rm a broadca st dom ain tha t is separ ate from ot her VLANs that m ay be configu red on the swi tch. On a give n switch, packe ts are b ridged be tween so urce an d destina tion port s that bel ong to the same V LAN.
2-8 Sta tic Vi rt ual LA Ns ( VLANs ) Static VLAN Ope ration VLAN Environ ments Y ou ca n config ure diff erent VLAN t ypes in any combina tion. Note that the default VLAN w ill alw ays be presen t. (For mor e on t he defa ult VLAN, refer to “VLAN Su pport and th e Defaul t VLAN” on pa ge 2-45 .
2-9 Static Vi rtual LANs (VL ANs) Static VLAN Ope ration VLAN Operation The D efa ult VLAN . In figure 2-1 , all ports belong to the defaul t VLAN, and device s co nnecte d to the se po rts ar e in the same b roadca st doma in. E xcept for an IP address and subnet, no confi guration steps are ne eded.
2-10 Sta tic Vi rt ual LA Ns ( VLANs ) Static VLAN Ope ration Prot ocol VL AN Envir onment . Figu re 2- 2 can a lso be appl ied to a pro toco l VLAN env ironm ent. In this case, VLANs “ W” and “X ” repres ent ro utab le protocol VL ANs. VLANs “Y” and “Z” can be an y protocol V LAN.
2-11 Static Vi rtual LANs (VL ANs) Static VLAN Ope ration Figure 2-4. Example of Connectin g Multiple VLANs Thro ugh the Same Link Introduci ng T agged VLAN T echnology into Networks Running Leg acy (Untagged ) VLANs.
2-12 Sta tic Vi rt ual LA Ns ( VLANs ) Static VLAN Ope ration ■ “CLI: Con figur ing VLA N Paramet ers” ( page 2-2 1) ■ “W eb: Vi ewing and Co nfiguring VL AN Paramete rs” (page 2-39) ■ .
2-13 Static Vi rtual LANs (VL ANs) VLAN Operat ing Rules VLAN Operating Rules ■ DHCP/Boot p: If you are using DH CP/Bootp to a cquire the switch’ s configura tion, packe t time-to-li ve, and T im eP informat ion, you must des- ignate the VLA N on which DHCP is config ured for th is purpose as the Prim ary V LAN.
2-14 Sta tic Vi rt ual LA Ns ( VLANs ) VL AN Ope rati ng Rule s proto col VLAN tha t does no t already i nclude the AR P VLAN prot ocol, the switch displays this message: ■ Deleting Static VLANs: On the switche s covered in th is guide you ca n delet e a VLAN re gardless of whether t here are cu rrently any ports belong- ing t o that VLAN.
2-15 Static Vi rtual LANs (VL ANs) VLAN Operat ing Rules Figure 2-7. Untagged VLAN Opera tion ■ T agged P acket Forwar ding: I f a port i s a tagged m ember of the sam e VLAN as an in bound, ta gged pack et re ceived on that por t, then the switch forwards the packet to an out bound port on that VL AN.
2-16 Sta tic Vi rt ual LA Ns ( VLANs ) Gener al Step s for Usin g VLANs tagged member mu st have the same VID as that carried by the inb ound, tagged packets gener ated on t hat VLAN.) Figure 2-8. T agged VLAN Operation See al so “Multipl e VLAN Con siderati ons” on pa ge 2-17.
2-17 Static Vi rtual LANs (VL ANs) Multipl e VLAN Considera tions Multiple VL AN Considerati ons Switch es u se a forw arding database t o maintain aw areness of which e xternal devi ces ar e loca ted on whic h VLA Ns.
2-18 Sta tic Vi rt ual LA Ns ( VLANs ) Multip le VLA N Conside rations drops the pac ket. This is not a probl em for a swit ch with a mul tiple for warding database b ecause the switch allows multiple i nstances of a given MAC address; one f or each valid de stination.
2-19 Static Vi rtual LANs (VL ANs) Multipl e VLAN Considera tions Example of an Unsupported Configuration and How T o Correct It The Problem. In figur e 2-9, the MAC a ddress table for Switch 6600 w ill sometimes record the switch as accessed on po rt A1 ( VLAN 1) , and o ther ti mes as accessed on port B1 (VLAN 2) : Figure 2-9.
2-20 Sta tic Vi rt ual LA Ns ( VLANs ) Multip le VLA N Conside rations reason , the 6600 d iscards some packets d irected throu gh it for t he 6120 switch, resu lting in p oor perfor mance a nd the appear ance of an interm it- ten t or brok en lin k. The Solution.
2-21 Static Vi rtual LANs (VL ANs) Config uring VLAN s Figure 2-11. Example of a V alid T opology for Devices Havi ng Multiple Forwa rding Databases in a Multiple VLAN Environment Configuring VLANs Menu: Configuring Port-Based VLA N Parameters The Me nu interfac e enables yo u to confi gure and view port-ba sed VLANs.
2-22 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs T o Change VLAN Supp ort Settings This section describes: ■ Changin g the maxim um number o f VLANs to supp ort ■ Chang ing the P rimary VLAN selection (See “C hanging th e Primary VLAN” on pa ge 2-34.
2-23 Static Vi rtual LANs (VL ANs) Config uring VLAN s If you changed t he value fo r Maximum V LANs to supp ort , you will see an ast erisk next to the VLAN Support option (see below) .
2-24 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs Figure 2-14. The Default VLAN Names Screen 2. Press [A] (for Add ). Y ou will then be promp ted for a new V LAN name and VLAN ID: 802.1Q VLAN ID : 1 Name : _ 3. T ype i n a VID (VLAN ID num ber).
2-25 Static Vi rtual LANs (VL ANs) Config uring VLAN s Figure 2-15. Example of VLAN Names Sc reen with a New VLAN Adde d 6. Repeat steps 2 throu gh 5 to add more VLANs. Rememb er tha t you c an add VLAN s until y ou re ach the n umber speci fied in the Maximum VLANs to supp ort field on the VLA N Support sc reen (s ee figure 2-12 on page 2-22 ).
2-26 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs Figure 2-16. Example of the Port-Base d VLAN Port A ssignment Screen in the Menu Interface 2. T o chan ge a po rt’ s VLAN assig nment (s): a. Press [E] (for Edit ). b. Us e th e ar row key s to s ele ct a V LAN ass ign ment you wa nt to chan ge.
2-27 Static Vi rtual LANs (VL ANs) Config uring VLAN s Figure 2-17. Exam ple of Port-Based VLAN Assignments for Specific Po rts For inf ormation o n VLAN t ags (“Untagg ed” and “ T agged ”), refer to “802.1Q VLAN T agging” o n page 2- 40. d.
2-28 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs Displaying th e Switch’ s VLAN Config uration. The show vlans command list s the V LAN s curr entl y ru nning in th e swit ch, w ith V ID, VLAN n ame, and VLAN status.
2-29 Static Vi rtual LANs (VL ANs) Config uring VLAN s For ex ample: Figure 2-18. Example of “Show VLAN” Listing (GVRP Enabled) Displaying the VLAN Membership of One or More Ports.
2-30 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs Figure 2 -19 is an example of the output when the detail option is not use d. Figure 2-19. Example of “Show VLAN Ports” Cumula tive Listing Descriptions of items displayed by the command are provided bel ow.
2-31 Static Vi rtual LANs (VL ANs) Config uring VLAN s Figure 2 -20 is an example of the output when the detail option is use d. Figure 2-20. Example of “Show VLAN Ports” Detail Listing ProCurve# .
2-32 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs Displaying t he Configurati on for a Par ticular VLA N . This comma nd uses the VID to identify and di splay the da ta for a specific static or dynamic VLAN. Syntax : show vlans < vlan-id > 802.
2-33 Static Vi rtual LANs (VL ANs) Config uring VLAN s Figure 2-21. Example of “Show VLAN” for a Specific Static VLAN Figure 2-22. Example of “Sh ow VLAN” for a Specific Dyn amic VLAN Changing t he Number of V LANs Allowe d on the Swit ch. In the de fault VLAN con figuration, t he switch al lows a maxi mum of 25 6 VLANs.
2-34 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs For exam ple, to reco nfigure the switch to al low 10 VLANs: Figure 2-23. Example of Command Se quence for Chang ing the Number of VLAN s Changing the Pr imary VLAN. In the def ault V LAN conf iguration , the port- based def ault VLA N ( DEF AUL T_VLAN ) is the Pri mary VLAN.
2-35 Static Vi rtual LANs (VL ANs) Config uring VLAN s Creat ing a N ew Stati c VLAN ( Port-B ased or Prot ocol- Based) Changin g the VLAN Co ntext Leve l. The vlan < vid > comma nd operates in the gl obal confi gurat ion context t o either configur e a stati c VLAN and/ or take the C LI to the s pec ified VLAN ’ s conte xt.
2-36 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs For exam ple, to c reate a new , port- based, st atic VLAN with a VID of 100: Figure 2-25. Example of Creat ing a New , Port-Based , Static .
2-37 Static Vi rtual LANs (VL ANs) Config uring VLAN s Converting a Dynamic VLAN to a Static VLAN. Use t his featur e if you want to convert a d ynamic, port -based VLAN membership to a static, po rt- based VLAN membership. This is necessary if you want to make the VLAN permane nt on the sw itch.
2-38 Sta tic Vi rt ual LA Ns ( VLANs ) Confi gur ing VL ANs For examp le, suppose you have a VLAN name d VLAN1 00 with a VI D of 100, and all por ts are set t o No for this VL AN.
2-39 Static Vi rtual LANs (VL ANs) Config uring VLAN s W eb: V iewing and Configurin g VLAN Parameters In the we b browser interface you c an do the fo llowing: ■ Add VLA Ns ■ Rename VLANs ■ Rem.
2-40 Sta tic Vi rt ual LA Ns ( VLANs ) 802.1Q VL AN T aggin g 802.1Q VLAN T agging General App lications: ■ The swi tch requ ires VLAN tagging on a gi ven port i f more than one V LAN of the sam e type uses the po rt.
2-41 Static Vi rtual LANs (VL ANs) 802.1Q VLAN Taggi ng Figure 2-26. Exampl e of T agged and Unt agged VLAN Port Assign ments ■ In switch X: • VLANs assigned to ports X1 - X6 can a ll be unt agged bec ause there is only one V LAN assignme nt per port.
2-42 Sta tic Vi rt ual LA Ns ( VLANs ) 802.1Q VL AN T aggin g Note Each 802.1Q-complia nt VLAN must have its own uniqu e VID number , and that VLAN must be g iven the s ame VID in ev ery device i n which it i s config ured. That is, if th e Red VLAN has a VID o f 10 in switch X, then 10 must also be used for the Red VID in sw itch Y .
2-43 Static Vi rtual LANs (VL ANs) 802.1Q VLAN Taggi ng ■ If all end nodes on a port c omply with the 802.1Q stan dard and ar e configu red to u se the corr ect VID, th en, you can configur e all VL.
2-44 Sta tic Vi rt ual LA Ns ( VLANs ) 802.1Q VL AN T aggin g ■ The VLANs assign ed to ports X4 - X6, Y2 - Y5 can all be untag ged because there is only one VL AN assigned per port. ■ Port X1 has two App leT alk VLA Ns assign ed, which me ans tha t one VLA N assigned t o this port ca n be untagge d and the othe r must be tagged.
2-45 Static Vi rtual LANs (VL ANs) Speci al VL AN T ypes Special VLAN T ypes VLAN Support and the Default VLAN In the fact ory default co nfigura tion, VLAN support is ena bled and all ports on the switc h belong to the por t-based, defaul t VLAN (named DEF AUL T_VLAN).
2-46 Sta tic Vi rt ual LA Ns ( VLANs ) Spec ial VL AN Type s ■ Any p orts no t spe cifi cally assi gned to an other V LAN wi ll re main a ssig ned to the Default VLAN, regar dless of whether it is the Prima ry VLAN. Candidat es for Pri mary VLAN incl ude any stat ic, port-base d VLAN cur rently conf igured on the switc h.
2-47 Static Vi rtual LANs (VL ANs) Speci al VL AN T ypes Figure 2-29. Example of Potent ial Security Brea ches In figure 2-30, W orkstation 1 has m anagement acce ss to all three swi tches through t he Manag ement VLAN, wh ile the PCs do n ot.
2-48 Sta tic Vi rt ual LA Ns ( VLANs ) Spec ial VL AN Type s Figure 2-30. Example of Managem ent VLAN Cont rol in a LAN T able 2-5. VLAN Membership in Figur e 2-30 Preparation 1. D eterm ine a V ID an d VLA N name suitabl e for your Ma nagem ent V LAN.
2-49 Static Vi rtual LANs (VL ANs) Speci al VL AN T ypes 4. T est t he managem ent VLAN fr om all of the manage ment sta tions autho - rized to use the Managem ent VLAN, i ncluding any SNM P-based n etwork manage ment st atio ns. Ensu re th at you in clude t estin g any Manage ment VLAN links bet ween s witch es.
2-50 Sta tic Vi rt ual LA Ns ( VLANs ) Spec ial VL AN Type s Using DHCP to Obtain an IP Address Y ou can use DHC P to obtain an IPv4 address for your Mana gement V LAN or a client on tha t VLAN. The follo wing example s illustrate whe n an IP address will be received from the DHCP server .
2-51 Static Vi rtual LANs (VL ANs) Speci al VL AN T ypes 2. I f Red_VL AN is configur ed as t he Manage ment VLA N and t he DHCP serv er is on Blue_VL AN, Blue_VLA N receiv es an IP addr ess but Red_VL AN does not. See fig ure 2-33 . Figure 2-33. Example of DHCP Serve r on Different VLAN from the Manag ement VLAN 3.
2-52 Sta tic Vi rt ual LA Ns ( VLANs ) Spec ial VL AN Type s 4. If Re d_VLAN is conf igured as the Managemen t VLAN and the clie nt is on Red_VLAN , but the DHCP ser ver is on Blue_V LAN, the clie nt will not receive an IP address. See figure 2- 35. Figure 2-35.
2-53 Static Vi rtual LANs (VL ANs) Speci al VL AN T ypes Deleting the Management VLAN Y ou can di sable the Se cure Mana gement feature w ithout dele ting the V LAN itself.
2-54 Sta tic Vi rt ual LA Ns ( VLANs ) Spec ial VL AN Type s ■ Monito ring Shar ed Resource s: The Manag ement VLA N feature shares intern al switch resou rces with sever al other fe atures.
2-55 Static Vi rtual LANs (VL ANs) Effec t of VLAN s on Other Switch Fe ature s Components of V oice VLAN Operation ■ V oice VLAN(s) : Configure one or mo re voice V LANs on the swit ch.
2-56 Sta tic Vi rt ual LA Ns ( VLANs ) Effec t of V LANs on Ot her S witch Featur es instance op eratio n, physicall y redunda nt links bel onging t o differen t VLANs can rem ain open. Ref er to chapte r 4, “Mul tiple Instanc e Spannin g-T ree Oper - atio n” .
2-57 Static Vi rtual LANs (VL ANs) VLAN Re strictions monitor port is assign ed, refe r to t he secti on titl ed “VL AN-Relate d Prob lems” in the “T roubleshootin g” app endix of the Management and Configuratio n Guide for your switch.
3-1 3 GVRP Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Intro ducti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2 GVRP Overv iew Overview This chapter descri bes GVRP an d how to conf igure it with the switch’ s built- in interfaces , and assume s an understa nding of VLANs, wh ich are de scribed in chap ter 2, “ Static V irtual L ANs (VLANs)” .
3-3 GVRP Intr oduc tion Introduction GVRP—G ARP VLAN Re gistrati on Protocol —is an applica tion of the Generic Attribut e Registra tion Proto col—GARP . GVRP is defined in the IE EE 802 .1Q standa rd, and GARP i s defined in the IEEE 8 02.1D-1998 sta ndard.
3-4 GVRP Gener al Op erati on convert it to a stat ic VLAN or al low it to cont inue as a d ynamic VLAN f or as long as needed . Y ou can a lso use GVRP to dy namica lly enabl e port member - ship in static VLANs c onfigured on a switc h.
3-5 GVRP Gener al Op erati on Figur e 3-1 . Exam ple of Forw ard ing Adv er tisem ents and D ynami c Jo ining Note th at if a stati c VLAN is co nfigure d on at least one port o f a switch, and that port has est ablished a lin k with a nother device, then al l other p orts of tha t switch will send adverti sements for that VLAN.
3-6 GVRP Gener al Op erati on Figure 3-2. Example of GVRP Opera tion Note A port can l earn of a dynamic VLAN throu gh devices th at are no t aware of GVRP (Swit ch “B”, abo ve). VLANs m ust be disabled in GVRP-una ware de vices to allow t agged pack ets to pass t hrough.
3-7 GVRP Per-P ort Op tions f or Hand ling GV RP “Unk nown VL ANs ” ■ Send VL AN adverti sements, and also receive ad vertisements for VLANs on other port s and dyna mically join those V LANs. ■ Send VL AN advert isements, bu t ignore ad vertise ments recei ved from other po rts.
3-8 GVRP Per- Port Opt ions fo r Ha ndling GVRP “U nknown VLANs” T able 3-1. Opt ions for Handling “Unk nown VLAN” Advertis ements: The CLI show gvrp command a nd the menu in terface V LAN Sup port screen show a switch’ s current GVRP conf igurati on, inclu ding the U nknown VLA N settings.
3-9 GVRP Per-Po rt Options for Dynam ic VLAN A dvertis ing and Joining Per -Port Options for Dynamic VLAN Advertising and Joining Initiating Advertisement s. As des cribe d in th e prec eding section , to enable dynamic join s, GVRP must be enabl ed and a port must be c onfigured to Learn (the default) .
3-10 GVRP Per-P ort Options f or Dynamic VLAN Advertisin g and Joinin g T able 3-2. Controlling VLAN Behavior on Ports with Stat ic VLANs Per-Port “Unkno wn VLAN ” (GVRP) Configura tion Stat ic VL.
3-11 GVRP GVRP an d VLAN Ac cess Control As the p receding t able indi cates, when you enable GV RP , a port that has a T agged or Untagge d stati c VLAN ha s the opt ion for b oth gene rating adverti se- ments an d dynamica lly joinin g other VL ANs.
3-12 GVRP Plan ning fo r GV RP Oper atio n ■ Disable GVRP ■ Reboot the switch The time-to-live for dynamic VLANs is 10 seconds. That is, if a port has not recei ved an adve rtis ement for an exis ting dynam ic VLA N duri ng the last 10 seconds, t he port removes i tself from th at dynamic VLAN .
3-13 GVRP Confi guri ng GVR P On a Sw itch Configuring GVRP On a Switch The procedur es in this sect ion describ e how to: ■ V iew the GVRP configur ation o n a switch ■ Enable and disa ble GVRP o.
3-14 GVRP Confi gur ing GVR P On a Swit ch Figure 3-5. Exam ple Showin g Default Settings fo r Handlin g Advertise ments 3. U se th e arro w keys t o sel ect th e port you w ant, and t he Sp ace ba r to se lect Unknown VLA N option f or any ports y ou want to chang e.
3-15 GVRP Confi guri ng GVR P On a Sw itch Figure 3-6. Example of “Show GVRP” Listing with GVRP Disabled Figure 3-7. Example of Show GVRP Listin g with GVR P Enabled Enabling an d Disabling G VRP on the Sw itch. This comman d enables GVRP on th e swit ch.
3-16 GVRP Confi gur ing GVR P On a Swit ch For exa mple, to ch ange and view the con figu rati on for p orts A1 -A2 to Block : Figure 3-8. Displaying the Static and Dynami c VLANs Active on the S witc.
3-17 GVRP Confi guri ng GVR P On a Sw itch The show vlans comm and lis ts the dynam ic (and s tatic) VL ANs in swi tch “B” after it has learned a nd joined V LAN-100 and VLA N-200. Figure 3-9. Exam ple of Listing Showing Dynamic VLANs Converting a Dynamic VLAN to a Static VLAN.
3-18 GVRP GVRP O perat ing No tes W eb: V iewing and Configur ing GVRP T o view , enable, disa ble, or reconf igure GVR P: 1. Cli ck on the Confi guration tab. 2. Cli ck on [VLA N Configura tion] and do the followin g: • T o en able o r disable GVRP , click on GVRP En abled .
3-19 GVRP GVRP O perat ing N otes ■ Rebootin g a switch on whic h a dynamic VL AN exists delete s that VLAN. Howe ver , the dy namic V LAN re -appe ars af ter th e rebo ot if GVR P is enabled a nd the switch again rece ives adverti sements for that VLAN throug h a port co nfigured t o add dyna mic VLANs.
4-1 4 Multiple I nstance Spa nning -T re e Operation Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 802.1s Multi ple Spanning Tree Prot ocol (MSTP) . . . . . . . . . . . .
4-2 Multipl e Instance Sp anning -Tree Opera tion Conte nts How to Save Your Current Configuration . . . . . . . . . . . . . . . . . . . 4-47 Displaying MS TP Statistics and Co nfiguration . . . . . . . . . . . . . . . . . 4-49 Displaying Global MSTP Status .
4-3 Multi ple Inst ance S pann ing-T ree Oper ation Overvi ew Overview The swit ches covered i n this guide , use the IEE E 802.1s Mu ltiple Spann ing T r ee Protocol ( MSTP) sta ndard.
4-4 Multipl e Instance Sp anning -Tree Opera tion Overv iew Multiple-Instance spanning tree operation (802.1s) en sure s th at only one active pat h exists between any two nodes in a spanning-tr ee instance . A spanning- tree instance c omprises a u nique set of VLANs, a nd belongs to a specific spa nning-tre e region .
4-5 Multi ple Inst ance S pann ing-T ree Oper ation Overvi ew The logica l and physic al topol ogies resul ting fro m these VLA N/Insta nce group ings result in blo cking on di fferent link s for differ ent VLANs: Figure 4-1.
4-6 Multipl e Instance Sp anning -Tree Opera tion 802. 1s Multipl e Spanning Tree Protoco l (MSTP) 802.1s Multiple Spanning T ree Protocol (MSTP) The 802 .1D and 802.1 w spannin g tree pr otocols op erate with out regard to a network’ s VLAN co nfigurat ion, and maintain o ne common spanning tre e throughout a bridge d network .
4-7 Multi ple Inst ance S pann ing-T ree Oper ation 802.1s Mul tiple Spa nning Tre e Protocol (MSTP) In a mesh environment, the default MSTP tim er settings ( Hello T ime and Forward Del ay ) are usually ad equate fo r MSTP ope ration.
4-8 Multipl e Instance Sp anning -Tree Opera tion 802. 1s Multipl e Spanning Tree Protoco l (MSTP) Common and Int ernal Spanning T ree (CIST): T he CIST iden tifies the regions in a network a nd admin.
4-9 Multi ple Inst ance S pann ing-T ree Oper ation 802.1s Mul tiple Spa nning Tre e Protocol (MSTP) MSTI must initia lly exist in the IST inst ance of the same MST r egion. When you assig n a static VLAN to an MSTI, the swi tch removes t he VLAN from the IST inst ance.
4-10 Multipl e Instance Sp anning -Tree Opera tion 802. 1s Multipl e Spanning Tree Protoco l (MSTP) Between regions ther e is a singl e, active spanni ng-tree to pology .
4-11 Multi ple Inst ance S pann ing-T ree Oper ation 802.1s Mul tiple Spa nning Tre e Protocol (MSTP) W ithin a r egion, traff ic routed bet ween VLANs in separate in stances can t ake only on e physical pa th.
4-12 Multipl e Instance Sp anning -Tree Opera tion 802. 1s Multipl e Spanning Tree Protoco l (MSTP) MSTP Operation with 802.1Q VLAN s As indic ated in the preced ing sections, with in a given MST in stance, a single spanning tree is c onfigur ed for all VLA Ns incl uded in t hat in stance.
4-13 Multi ple Inst ance S pann ing-T ree Oper ation 802.1s Mul tiple Spa nning Tre e Protocol (MSTP) T erminology BPDU — Acron ym for bridge protoc ol da ta uni t. BPDUs are dat a mess ages that a re exch anged betwe en the swi tches with in an ex tended LA N that use a spanning t ree protoc ol topology .
4-14 Multipl e Instance Sp anning -Tree Opera tion 802. 1s Multipl e Spanning Tree Protoco l (MSTP) MSTP BP DU (MSTP Bridge Protocol Data Unit) : These B PDUs carr y region- sp ecif ic info rmatio n, suc h as the regio n ident ifie r (regi on name and revi sion numbe r).
4-15 Multi ple Inst ance S pann ing-T ree Oper ation 802.1s Mul tiple Spa nning Tre e Protocol (MSTP) Operating Ru les ■ All switch es in a r egion mu st be conf igured wi th the same set of VLA Ns, as well as the same MST co nfigu ration nam e and MST con figuration number .
4-16 Multipl e Instance Sp anning -Tree Opera tion 802. 1s Multipl e Spanning Tree Protoco l (MSTP) ■ If a port o n a switch conf igured for MSTP r eceives a lega cy (STP/802.
4-17 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Note o n Pa th Co st RSTP and M STP impl ement a g reater ra nge of path costs than 802. 1D STP , and use diff erent defa ult path cost values to a ccount for h igher net work speeds.
4-18 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP ■ Plan indi vidual re gions based on VLAN gr oupings. That is, plan on all MSTP switch es in a g iven region support ing the same set of VLANs. Within each r egion, dete rmine the V LAN memb ership for each spanni ng-tree instance .
4-19 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP MSTP Configuration Over view This section describes the general st ep s for confi guring MSTP v ia the CLI, assumi ng that yo u have al ready determi ned t he VLANs you want MSTP to use (see “Plannin g an MSTP App lication” o n page 4-1 7).
4-20 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP 3. Configure MST inst ances. • Conf igure one instan ce for ea ch VLAN grou p that yo u want t o operate as an act ive topology within the reg ion to which the switch belo ngs. When you create t he instance, you must include a mi nimum of one VID.
4-21 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Configuri ng MSTP Operation Mode and Global Settings The command s in this section apply at the switch (glob al) level. For de tails of how to conf igure sp anning t ree setting s on indiv idual ports, see “Con figuring MSTP Per -Port Parameter s” on page 4-26.
4-22 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Syntax: spannin g-tree con fig-revisio n < revision -number > This command configures the rev ision number you designate for the MST region in which you want the switch to reside.
4-23 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Syntax: spannin g-tree forw ard-delay Sets time the switch waits between transitioning from listening to learning and from learning to forwardin g states. ( Range: 4 - 30; Default: 15 .
4-24 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Syntax: spannin g-tree pendi ng < apply | config- name | config-re vision | instance | reset > Manipulates the pending MSTP configuration.
4-25 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Syntax: spannin g-tree pri ority < pr iority-mult iplier > Every switch running an instance of MSTP has a Bridge Identifier , which is a unique identifier that helps distingui sh this switch from all others.
4-26 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Configuring MSTP Per -Port Parameters In an M STP topo logy , you configu re per -port paramet ers in th e glo bal config - urat ion cont ext.
4-27 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Syntax : [no] spanni ng-tree < port-l ist > auto-edge -port Supports the automatic identification of edge ports. The port will look f or BPDUs for 3 seconds; if there are none i t begins forwarding packets.
4-28 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Syntax : spanning- tree < port-li st > path-cost < a uto | 1..200000000 > Assigns an individual port co st that the switch uses to determine which ports are fo rwarding ports in a given spanning tree.
4-29 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Syntax : spanning- tree < port-li st > priority < pri ority-mul tiplier > MSTP uses this parameter to determine the port(s) to us e for forwarding. The port with the lowest priority number has the highest priority for use.
4-30 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Configuring BPDU Filtering The STP BPDU filt er feat ure allo ws co ntrol of spanning -tree p articipat ion on a per -port b asis. It can be use d to exclude specif ic ports f rom becom ing pa rt of spanning tre e operations.
4-31 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP For exam ple, to c onfigure BPDU filtering o n port a9, ente r: ProCurve(config)# spanning-tree a9 bpdu-filter V iewing BPDU Filtering . The spanning-t ree show <p o r t > c onfiguration command d isplays the BPD U’ s fi lter state.
4-32 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Figure 4-7. Exampl e of BPDU P rotection Enabled at the Netwo rk Edge The fo llowing comm ands al low you to con figu re BPD U prot ection . Caut ion This co mmand should only be us ed to guard edg e ports that are n ot expecte d to participate in STP op erations.
4-33 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Example. T o configur e BPDU pro tection on port s 1 to 10 with SNMP traps enab led, e nte r: ProCurve(config)# spanning-tree 1-10 bpdu protection ProCurve(config)# spanning-tree trap errant-bpdu The following steps will then be set in process: 1.
4-34 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP BPDU protec ted ports ar e display ed as separat e entries of the spa nning tree categ ory w ithin the c onfig urati on fil e. Figure 4-9. Example of BPDU Filters in the Show Configuration Command ProCurve(config)# show configurat ion .
4-35 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Configuri ng MST Instance Para meters When you enable MSTP o n the switch , a spanning tr ee instance i s enabled automa tically .
4-36 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Syntax: [no] sp anning-tre e instance < 1..16 > vlan < vid [ vid.. vid ] > no span ning-tree instance < 1..16 > — Con tinued — Note: The valid VLAN ID s that you can map to a specified MSTI are from 1 to 4094.
4-37 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Configuring MST Inst ance Per -Port Parameters Command Page spannin g-tr ee inst ance < 1..16 > < por t-lis t > path -cost < auto | 1..200000 000 > 4-37 spannin g-tr ee inst ance < 1.
4-38 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Syntax: spanning -tree insta nce < 1..16 >< port-li st > prio rity < priority-multip lier > This command sets the priority for the specified port(s) in the specified MST instance.
4-39 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP Syntax: spannin g-tree < p ort-list > priori ty < pr iori ty-m ul tipli er > This command sets the priority for the specified port(s) for the IST (that is, Instance 0) of the reg ion in which the switch resides.
4-40 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Enabl ing or Dis abling S panning T ree Ope ration This c omman d enab le s or disa bles spann ing tr ee op erat ion fo r any span ning tree p rotocol enab led on the swi tch.
4-41 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP T o Creat e a Pending MSTP C onfiguration. This procedur e creates a pending M STP c onfigura tion an d exchan ges it with the activ e MSTP configu - ration : 1. Co nfigure th e VLANs y ou want incl uded in any instances in t he new region .
4-42 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP 7. T o re view your pen ding conf igurati on, use the show sp anning-tr ee pending comma nd (see p age 4-57). 8. T o exch ange the cu rrent ly ac tive MST P conf igura tion wit h the pendin g MSTP conf igurat ion, use t he spanning- tree pending apply command.
4-43 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP ■ Flexibility: By preconfigurin g identical VLAN ID -to-MSTI mappi ngs on all switch es in an MST re gion, you c an combine sw itches that su pport differen t maximum numbe rs of VLANs.
4-44 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Configurin g MSTP Instances with the VLAN Range Opti on For the swit ches covered in this guide, if you use the spanning-tree inst.
4-45 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP On other ProCur ve switches, only the VLAN s that are prese nt will be included, that is, only VLANs 1, 5, and 7 would be included.
4-46 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Operating Notes for the VLAN Conf iguration Enhancement ■ Configurin g MSTP on the switch a utomatically conf igures the Intern al Spann ing T ree (IST) in stance and p laces all sta tically and dynamically configured VLAN s on the switch into t he IST instance.
4-47 Multi ple Inst ance S pann ing-T ree Oper ation Confi gurin g MSTP How to Save Y our Current Co nfiguration Y ou can sav e your curre nt conf iguration be fore up dating to a new vers ion of software by following these steps: 1. Enter the show config files command to display your current configura- tion f iles, as show n in Figure 4- 12.
4-48 Multipl e Instance Sp anning -Tree Opera tion Confi gurin g MSTP Figure 4-14. Show Flash Comman d after Upgr ading the Swit ch to a New V ersion of the Software (Z .12.51) 5. If you want to run the prior software version, Z.12.43 in this example, enter this command: ProCurve(config)# boot system flash secondary c onfig configK1243.
4-49 Multi ple Inst ance S pann ing-T ree Oper ation Dis playing MS TP Statist ics and Confi guratio n Displaying MSTP Statistics and Configuration SNMP MI B Suppor t for M STP . MSTP is a sup erset of the STP/8 02.1D and RSTP/8 02.1w prot ocols and u ses the MIB objects d efined for these two protocols.
4-50 Multipl e Instance Sp anning -Tree Opera tion Displ aying MSTP Statistics an d Configu ration Displayi ng Global MSTP Status The foll owing comma nds display the MSTP statist ics for the c onnections between MST regions in a ne twork .
4-51 Multi ple Inst ance S pann ing-T ree Oper ation Dis playing MS TP Statist ics and Confi guratio n Figure 4-15. Example of Com mon Spanning T ree Status ProCurve(config)# show spa nning-tree Multi.
4-52 Multipl e Instance Sp anning -Tree Opera tion Displ aying MSTP Statistics an d Configu ration Displaying Detailed Port Information The foll owing comma nds display t he MSTP statist ics for th e connection s between MST regions in a ne twork . . Figure 4-16.
4-53 Multi ple Inst ance S pann ing-T ree Oper ation Dis playing MS TP Statist ics and Confi guratio n Displaying Status for a Speci fic MST Instance The foll owing comma nds display t he MSTP statist ics for a sp ecified MS T instance .
4-54 Multipl e Instance Sp anning -Tree Opera tion Displ aying MSTP Statistics an d Configu ration Displaying the MSTP Configuratio n Displaying th e Global MSTP Configura tion. Th is command disp lays the switch’ s basic an d MST region spannin g-tree co nfigura tion, includ ing basic port connec tivity setting s.
4-55 Multi ple Inst ance S pann ing-T ree Oper ation Dis playing MS TP Statist ics and Confi guratio n Displaying Per -Instance MSTP Configurati ons. T hese comm ands di s- plays th e per -instance por t configur ation and cu rrent state, along with instance ident ifiers and r egional root data.
4-56 Multipl e Instance Sp anning -Tree Opera tion Displ aying MSTP Statistics an d Configu ration Displaying th e Region-Level Configuration in B rief. This comm and output is usef ul for quick ly ve rifyi ng the a llocati on of VLANs in the s witch ’ s MSTP conf igurat ion an d for viewin g the configu red reg ion iden tifiers.
4-57 Multi ple Inst ance S pann ing-T ree Oper ation Dis playing MS TP Statist ics and Confi guratio n Displaying th e Pending MSTP Configuratio n. This comm and disp lays the MSTP configuration t he .
4-58 Multipl e Instance Sp anning -Tree Opera tion Troub lesho oting an MSTP C onfig ura tion T roub leshooting an MSTP Configuratio n This section describes the show spanni ng-tree comm ands th at yo u can use to monitor , troub leshoot, an d debug th e opera tion of a mult iple-instanc e span- ning-tree configu ration in your netwo rk.
4-59 Multi ple Inst ance S pann ing-T ree Oper ation Troubl esho oting an MSTP Config urati on ■ MST Ins tance ( mst ): Connects all static and (star ting from rele ase 13.
4-60 Multipl e Instance Sp anning -Tree Opera tion Troub lesho oting an MSTP C onfig ura tion Figure 4-22. Example of show spanning- tree root-histor y cst Command Output Figure 4-23. Exampl e of show sp anning-tr ee root-his tory ist C ommand Outpu t Figure 4-24.
4-61 Multi ple Inst ance S pann ing-T ree Oper ation Troubl esho oting an MSTP Config urati on Displayi ng Debug Counters for All MST Instances The show spanni ng-tree debug- counters command a llows you to disp lay the aggreg ate values of all MSTP debu g counters that are maintain ed on a switch.
4-62 Multipl e Instance Sp anning -Tree Opera tion Troub lesho oting an MSTP C onfig ura tion Displayi ng Debug Counters for One MST Inst ance The show spanni ng-tree debug- counters instan ce command allows y ou to dis- play t he aggregate values of all MSTP debug co unters main tained on a swit ch for a specified sp anning-tre e instance .
4-63 Multi ple Inst ance S pann ing-T ree Oper ation Troubl esho oting an MSTP Config urati on Figure 4-26. Example of show sp anning-tr ee debug-co unters insta nce Command Output for All Port s in t.
4-64 Multipl e Instance Sp anning -Tree Opera tion Troub lesho oting an MSTP C onfig ura tion Displayi ng Debug Counters for Ports in an MST Instance The show spanni ng-tree debu g-counters in stance .
4-65 Multi ple Inst ance S pann ing-T ree Oper ation Troubl esho oting an MSTP Config urati on Figure 4-27. Exampl e of show sp anning-tr ee debug-co unters in stance ports Command Ou tput for O ne Po.
4-66 Multipl e Instance Sp anning -Tree Opera tion Troub lesho oting an MSTP C onfig ura tion Figure 4-28. Exampl e of show sp anning-tr ee debug-co unters in stance ports Command Ou tput for O ne Por.
4-67 Multi ple Inst ance S pann ing-T ree Oper ation Troubl esho oting an MSTP Config urati on MST Config Error BPDUs Number of BPDUs rec eive d from a ne ighb or bridg e with incon sisten t MST c onfigu rati on info rmati on.
4-68 Multipl e Instance Sp anning -Tree Opera tion Troub lesho oting an MSTP C onfig ura tion Exc eeded M ax Hop s MSTI MS Gs Numbe r of times t hat an MS TI MSG pac ket is receive d from a bri dge in tern al to the MS T regi on with an MSTI Remai ning Hops valu e less tha n or equa l to 1.
4-69 Multi ple Inst ance S pann ing-T ree Oper ation Troubl esho oting an MSTP Config urati on T roubleshoo ting MSTP Operation T able 4-2. T roubl eshooting MS TP Operatio n RST BP DUs Tx Numbe r of (80 2.1w) RST BPD Us th at are tr ansmit ted t hrough the por t.
4-70 Multipl e Instance Sp anning -Tree Opera tion Loop Pr otect ion Loop Protectio n In cas es wh ere s pann ing tr ee ca nnot be u sed to pre vent l oops at the edge of the netw ork, loop prot ection ma y provide a suitabl e alterna tive.
4-71 Multi ple Inst ance S pann ing-T ree Oper ation Loop Protect ion Configur ing Loop Protecti on Loop prot ection p rovides prot ection agai nst loops by transmitting loop protocol pa ckets ou t of ports on w hich loop pr otect ion has been en abled .
4-72 Multipl e Instance Sp anning -Tree Opera tion Loop Pr otect ion Notes ■ The receiver -action option can be config ured on a pe r -port basis and can only be en able d after loop protec tion has be en enabl ed on the p ort. All other co nfigurat ion options ( disable-timer , t rap loop -detected , and transmit interval ) are gl obal.
5-1 5 Quality of S ervice (QoS): Man aging Bandwidth M ore Effectively Contents Intro ducti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Terminology . . . . . . . . . . . . . . . . . . . . .
5-2 Quality of Service (QoS): Man aging Bandw idth More Effectively Conte nts Error Messages caused by DSCP Policy Changes . . . . . . . . . . . . 5-36 Exampl e of Changin g the Priori ty Setting on a Polic y When One o r More Cla ssifiers Are C urrently Us ing the Pol icy .
5-3 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Introductio n Introduction As the t erm sugg ests , network policy refers to t he netw ork-wide contro ls you can imple ment to : .
5-4 Quality of Service (QoS): Man aging Bandw idth More Effectively Introduct ion ■ Upgrad e or downgr ade traffi c from va rious ser vers. ■ Control the priori ty of traffic from ded icated VL ANs or applic ations. ■ Chan ge the pri orities of traffic fr om variou s segmen ts of your ne twork as your business needs change.
5-5 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Introductio n QoS is im plemente d in the for m of rules or polic ies that ar e configure d on the switch. While y ou can use Qo S to prio ritize only the outb ound traff ic while it is moving through the swit ch, you derive the max imum b enefit by using QoS in an 80 2.
5-6 Quality of Service (QoS): Man aging Bandw idth More Effectively Introduct ion T erminology Te r m Use i n Thi s Docum ent 802. 1p priority A traffic priority s etting carr ied by a VLAN-ta gged pack et moving from one dev ice to anothe r through ports that a re ta gged memb ers of the VL AN to which the pa cket be long s.
5-7 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Introductio n Overview QoS settings op erate on two level s: ■ Control ling th e prior ity of o utboun d packet s moving t hroug .
5-8 Quality of Service (QoS): Man aging Bandw idth More Effectively Introduct ion A QoS co nfigurat ion enables yo u to set the out bound prior ity queue to which a packet is sent.
5-9 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Introductio n Y ou ca n co nfigure a QoS p riority of 0 through 3 for an out bound packet . When the packet is then sent to a port, the QoS pri ority dete rmines whic h outbound queu e the pa cket uses : T able 5-2.
5-10 Quality of Service (QoS): Man aging Bandw idth More Effectively Introduct ion Classifiers for Prioritizing Outbound Packets Note On Using Multipl e Criteria ProCur ve reco mmends that you configure a minimu m number of the availab le QoS class ifiers for pri oritizing an y given pack et type.
5-11 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Prep arat ion f or Conf igur ing QoS Preparation for Configuring QoS Preserving 80 2.1p Priority QoS op erates in VLAN-tagged and VLAN-u ntagged en vironments. If your network does n ot use multiple VLANs, you can st ill implement the 802.
5-12 Quality of Service (QoS): Man aging Bandw idth More Effectively Prep aration for Configurin g QoS 2. Se lect the QoS option you wa nt to use. T a ble 5-6 li sts the tra ffic ty pes (QoS classif iers) and the QoS options yo u can use f or priorit izing or setting a policy on t hese tr affic t ypes: T able 5-6.
5-13 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Prep arat ion f or Conf igur ing QoS V iewing the QoS Configurati on The foll owing show co mmands are av ailable on the switches co vered in thi s guide. E xamples of the show qos output ar e included with the example fo r each priori ty type.
5-14 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic Using QoS Classifiers to Configur e Quality of Servic.
5-15 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic QoS IP T ype-of-Se rvice (T oS) Poli cy and Priority.
5-16 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic Assigning an 802.
5-17 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic Assigning an 802.
5-18 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic Operati ng Notes Differe nt applicati ons may u se the same D SCP in the ir IP packet s.
5-19 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic For exam ple, an e dge switch “A ” in an untag ged VLAN assi gns a DSCP of 000110 o n IP packets it receives on po rt A6, and handle s the packet s with high prior ity (7).
5-20 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic Figure 5-6.
5-21 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic Assigning a DSCP Polic y on the Basis of the DSCP in IPv4 Packets Received from Upstream Devices The pr eceding sect ion describ es how to forwar d a polic y set by an edg e (or upstr eam) swi tch.
5-22 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic For exampl e, suppose you want to config ure the following two DSCP pol icies for pack ets receiv ed with the indicated DSC Ps.
5-23 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic Figure 5-7. Display the Current DSCP-Map Configura tion 2. Co nfig ure th e pol icie s in th e DSCP tab le: Figure 5-8.
5-24 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic 3. Assign th e policies to th e codepo ints in the se lected pa cket types.
5-25 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic a. Co nfig ure a sp ecif ic DS CP wi th a sp ecif ic prio rity i n an edge sw itc h.
5-26 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic T able 5-7. How the Switch Uses t he T oS Configur ation T able 5-8. T oS IP-Precedence Bit Mappings to 802.
5-27 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic QoS Source-Port Pri ority QoS Classifi er Precedenc e: 2 The QoS so urce-por t option enab les you to use a p acket’ s source-p ort on the switch as a QoS classifier .
5-28 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic For examp le, suppose that you want to pr ioritize in.
5-29 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic If you then dec ided to remov e port A1 from QoS prioritizati on: Figure 5-12.
5-30 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic 3. Configu re the DSCP policy by usin g qos dscp-map to config ure the p riority for each c odepoint .
5-31 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic For exam ple, suppo se you wanted to assign th is set of pr iorities: 1. Deter mine whether the DSCPs alread y have pri ority assign ments, whic h could indic ate use by e xisting applic ations.
5-32 Quality of Service (QoS): Man aging Bandw idth More Effectively Using QoS Classifie rs to Config ure Quality o f Service for Outbound Traffic 3. Assign the DSCP policies to the se lected source -ports an d display the result. Figure 5-15. The C ompleted S ource-Port DSCP-Priori ty Configura tion Radi us Over ride Fi eld.
5-33 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Differe ntiated Se rvices Cod epoint (DSC P) Mappin g Differentiated Services Codep oint (DSCP) Mappin g The DSCP Pol icy T able associates an 802. 1p priority with a sp ecific T oS byte codepo int in an I Pv4 packet.
5-34 Quality of Service (QoS): Man aging Bandw idth More Effectively Differen tiated Servic es Codepoi nt (DSCP) Ma pping T ab le 5- 9. The D efa ult DSC P Pol icy T abl e Default Priority Settings fo.
5-35 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Differe ntiated Se rvices Cod epoint (DSC P) Mappin g For exam ple, in t he defau lt conf iguration, t he foll owing code point se.
5-36 Quality of Service (QoS): Man aging Bandw idth More Effectively Differen tiated Servic es Codepoi nt (DSCP) Ma pping Notes on Changi ng a Priority Setting If a QoS classi fier is using a pol icy .
5-37 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Differe ntiated Se rvices Cod epoint (DSC P) Mappin g T able 5-10. Error Messages Gen erated by DSCP Policy Chan ges Example of Ch.
5-38 Quality of Service (QoS): Man aging Bandw idth More Effectively Differen tiated Servic es Codepoi nt (DSCP) Ma pping Figure 5-18. Example of a Search to Identify Classifie rs Using a Codep oint Y ou W ant T o Change ProCurve (config)# show qos dscp-map DSCP -> 802.
5-39 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively Differe ntiated Se rvices Cod epoint (DSC P) Mappin g 2. Ch ange the c lassi fi er con figur atio ns by ass ignin g the m to a di ffer ent DS CP policy , or to an 8 02.1p prio rity , or to No-override .
5-40 Quality of Service (QoS): Man aging Bandw idth More Effectively QoS Queu e Configuratio n QoS Queue Configuration By defa ult, there ar e four prior ity queues or traffic classe s. These are shar ed across all ports. This nu mber cannot be reconf igured.
5-41 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively QoS O perat ing Notes an d Restr icti ons QoS Operating Notes and Restrictions QoS supp ort bas ed on packe t type is s hown below .
5-42 Quality of Service (QoS): Man aging Bandw idth More Effectively QoS Opera ting Notes and Restric tions T able 5-12. Maximum Q oS Entri es. Attempti ng to exceed the ab ove limi ts genera tes the fol lowing me ssage in the CLI: Unable to add this QoS rule.
5-43 Quality of Serv ice (QoS): M anaging Bandwidth More Effe ctively QoS O perat ing Notes an d Restr icti ons IP Multicast (IGMP) Interaction with QoS IGMP hi gh-priority -forward ca uses the swit c.
Index – 1 Inde x Numerics 802.1p priority (QoS) defi niti on … 5-6 802.1Q VLAN tagging …3 - 3 802.1w as a region …4 - 1 6 A adve rtise ment , GVR P defi niti on … 3-3 B bandwid th effect of .
2 – In dex G GARP See GVRP. gateway manual con fig pr iori ty … 2- 46 GVRP …4 - 8 advert isemen t … 3-1 9 advert isemen t, def ined … 3-3 adverti sement , resp onses to … 3-6 advert isemen.
Inde x – 3 message VLAN alre ady exi sts … 2-38 MSTI, config uration …4 - 3 5 MSTP instan ce mappi ng … 4-43 preconfig ure benefits … 4-4 2 preconfig ure topology … 4-42 preconfig ure vlans in instan ce … 4 -43 savi ng cur rent config ura tion … 4-47 See spanni ng-tre e, 802.
4 – In dex blocke d link … 4- 12 blocke d port … 4-1 0 broa dcast stor m … 4-3 enablin g MSTP … 4-40 MSTP See spanni ng-tre e, 802 .1s VLAN effect o n … 2-55 spanning-tre e conf ig-name … 4-43 conf ig-revision … 4-43 inst ance vlan … 4 -42, 4-43 root-history … 4-58 spanning-tre e, 802.
Inde x – 5 MIB … 4- 49 MST re gion See region. MSTI … 4- 8, 4- 15 MSTI root … 4-10 MSTI roo t, di splay ch ange histor y … 4-5 8 MSTI, vi ew stat us … 4- 53 MSTP … 4-9 MSTP ope ratio n … 4-9 MSTP, v iew glo bal config uration … 4 -54 multiple spanning tree instance See MSTI overri de hello-time … 4-15 path c ost, ef fect on 802.
6 – In dex defi niti on … 5-7 V VID See VL AN . VLAN alread y exists, messa ge … 2-38 broa dcast dom ain … 2- 4 CLI, co mman ds … 2-2 8 CLI, conf iguring param eters … 2-27 conver t dynam .
Inde x – 7 VID, defa ult VLAN … 2-45 voice … 2- 5, 2 -29, 2- 30, 2- 32, 2-5 5 voice , conf igurat ion … 2- 36 voice, configuring … 2-28 voice, VLAN type … 2 -13 web bro wser config uration … 2 -39 See al so GVRP. VLANs static , 802. 1s spa nnin g tree … 4-8 voice VLAN See VLAN.
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