Benutzeranleitung / Produktwartung 1000 des Produzenten 3Com
Zur Seite of 152
® http://www.3com.com/ Supe rStack ® II Switch 1000 User Guide Agen t Softw are Versio n 3.1 Docum ent No . DUA16 90-0 AAA05 Pub lis he d Ju ne 1 997.
3Com Corpor ation ■ 5 400 Bayfr ont Plaza ■ Sa nt a Cl ar a, Ca li fo r ni a ■ 9 5052-8145 Copyright © 3C om Ir e land , 1997 . All right s reserved.
C ONTE NTS A BO UT T HIS G UI D E Int roducti on 1 How to Use This Gu ide 1 Convent ions 2 Rela t ed Doc umentat ion 2 1 G ETTI NG S TA RTED Abou t the Swit ch 1000 1-1 Sum m ar y o f Fe a tur es 1- 1.
Confi guration Rules for F ast Et h ernet 2- 2 Confi guration Rules w it h Full Duplex 2- 2 Ins tallin g the Switc h 1000 2-4 Rack M ountin g 2-4 Stac king the Swi tch and Oth er Units 2-4 W all Mount.
How VLANs Ease Ch ange and Mov ement 5- 2 How VLANs C ontrol Bro adcast T raff ic 5-2 Ho w V LA N s Provi d e Ex t ra Se cur it y 5- 2 An Exam ple 5-2 VLANs and t he Switch 5-3 The Def ault VLAN a nd .
Faul t Log 6-9 Rem ote Po l li ng 6-10 A S AF ETY I NFOR M A TI ON Impor tant Saf ety Inf ormati on A-1 Pow e r Su pp ly an d F u se A- 3 Socke ts for Redundan t Power Sys tem (RPS) A-3 RJ45 Por t s A.
A BOUT T HIS G UI DE About This Gu ide provi des an overvi ew of this guide, desc ribes the guide conventio ns, tells you where to look for specific information and lists other publications tha t ma y be us eful.
2 A BOUT T HIS G UIDE Conv e nt ion s Ta b l e 1 and Ta b l e 2 list conventions that are used throughout this gui de. Rel ate d Documen tation The Switch 1000 doc ume nt set incl udes: ■ SuperStack I I Switch 1000 Quick Refere nce Guide . Docum ent Number DQA1690-0A AA0x ■ SuperStack I I Switch 1000 Quick Installation Guide .
1 G ETTIN G S TARTE D Ab out the Swi tch 1000 Part of 3Com ’ s Sup erStac k ® II ra nge o f products, the Switch 1 000 is designed to ove rc om e the common problem of insuffic ien t bandwidth for today’ s growing network applications, while pr o vid- ing low-cost, high performance networking with little need for configuration.
1- 2 C HAPTER 1: G ETTING S TARTED Por t Conn ecti ons 10BASE-T Por ts The Switc h has 12 or 2 4 10B ASE-T po rts co nfig- ur ed as MDIX (cr oss-over) , w hich pro vide a full 10Mbps bandw idth to a ttached endstations. M axi- mum segm ent length is 100m ( 328ft) over grade 3, 4, or 5 twisted pair cable.
About th e Switch 1000 1- 3 Switc h Operatio n an d Features How Does th e Switch Co mpare to a Bridge ? The table b elow show s ho w Sw itch 1000 operation compares to that of a c onventional I EEE 802. 1d bridge. In all o ther ways, Switch 1000 and bridge opera- tion is id entic al .
1- 4 C HAPTER 1: G ETTING S TARTED T o best sui t yo ur netwo rking requirements, the Switch 100 0 all ows you to select o ne of four frame forwarding mode s: ■ Fast For war d — Frames are f o rwar ded as soon as the des tinati o n addr ess is r eceived and veri fied.
About th e Switch 1000 1- 5 For more information abo ut enabling full du plex, refer to “ Setting Up the Switch Unit” a nd “ Setting Up the Switch Ports” in C hapter 4 . Security The Switch 1 000 contains adv anced security fe a- tures which gu ard against users connecting unau- thorized endstations to your net w ork.
1- 6 C HAPTER 1: G ETTING S TARTED ■ Redundant paths a re enabled if the m ain traffic paths fail. For m o r e information abo ut STP , re fer to “ Spanning T re e Pr ot oco l” on page 5-12 .
Switch 100 0 on Y o ur Network 1- 7 Netw ork Seg men tati on I This e xample shows how the Sw itch 100 0 fits into a large corporate network with a Fast Ethernet infrastructure. A Switch i s po sitioned on each floor and servers ar e centrali zed in the basement.
1- 8 C HAPTER 1: G ETTING S TARTED Netw ork Seg mentatio n II This exa mple show s the S witch 10 00 i n a second workgroup situation. This setup could be that of a small office within a large corporation, or part of a lar ger corporate n etwork. Most of the switch ports have multip le ends tations.
Switch 100 0 on Y o ur Network 1- 9 Desk top Swi tchin g This e xample shows Switch 1000 used for a group of heavy-tr affic users in a large corporate network. Here switching i s b rought to the d esktop wi th a single endstation per switc h port. A l ocal server i s connec ted using the 100M bps F ast Ethe rn et link.
1-10 C HAPTER 1: G ETTING S TARTED Unit Overvie w — Fr ont F igur e 1-4 Sw itch 1000 fr ont view : 3C1690 1A top , 3C1 6900A bo ttom.
Unit Overvi ew — Front 1-11 10BA SE-T Po rts The Switc h has 12 or 2 4 10B ASE-T RJ45 ports con - figur ed as MDIX (cr o ss-over), which provide a full 10Mbps bandw idth to a ttached endstations. The maximum segm ent leng th is 100m (328ft) o ver cat- egory 3, 4, or 5 UTP cable.
1-12 C HAPTER 1: G ETTING S TARTED U nit O ver view — Rea r F igur e 1-5 Sw itch 1000 r ear view.
Unit Overview — Rear 1-13 Pow er Socke t The Switch 1 000 automatically adjusts to the supply voltage. The fuse is suitabl e for bo th 110 V A.C. and 2 20–240V A. C. operation. For informa- tion on replacing fuses, refer to A ppendix A . Unit Seri al Nu mb er Y ou may need thi s serial number for faul t reporting purposes.
1-14 C HAPTER 1: G ETTING S TARTED Unit Defaults The following table shows the factory defaults for the Switch 1 000 features. Manag ing the Swit ch 1000 The menu-dri ven interface built into the Switch 1000 i s know n as the V T100 i nterface. Y ou can access it us ing a VT100 te rminal, or a P C usin g ter- minal emulation software.
Quick St art For SNMP Use r s 1- 15 Quic k Start For SNMP Users This se ction desc ribes how to ge t started if you want to use an SN MP N etwork Ma nager to ma na g e th e S wi t c h. It as su m es yo u a re al read y familiar with S NMP m anagement.
1-16 C HAPTER 1: G ETTING S TARTED.
2 I N S T A L L A T I O N A N D S E T U P Follow ing Safety Info rmation Before in stalling or remov ing any components fr om the Switch, or carrying out any maintenance proce- dures, you mus t read the safety in formation pro- v ide d in Appe ndix A of this gui de.
2- 2 C HAPTER 2: I NSTALLATION AND S ETUP Conf i gu rat io n Ru les for F as t Et her n e t The topology rules for 100Mbps Fast Ether net ar e slightly dif f erent to those for 10Mbps Ether net. Figure 2-1 illustrates the key topology rules a nd pro- vi des examples of how th ey allow for large-s cale Fast Ethernet netwo rks.
C onfigur atio n Rule s wit h Ful l Dupl ex 2- 3 Fig ure 2 -1 Fast Ethernet co nfigura tion rules.
2- 4 C HAPTER 2: I NSTALLATION AND S ETUP Ins talling the Switch 1000 Rac k Mounti ng The Switc h is 1 .5U h igh and fits in most standa rd 19 -i nch r acks. CAUTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the und erside of the unit, if fitted.
Inst alling th e Sw itch 1000 2- 5 W all Mounti ng A single Switch can be wal l-mounted. CAUTION: Disconne ct any cables from the unit before continuing . Remo ve self-adhesive p ads from the undersi de of the unit if they hav e been p revi- ously fitted.
2- 6 C HAPTER 2: I NSTALLATION AND S ETUP Po wer i ng -up th e S wi tc h 1 Connect the power cord to the IEC socket on the rear o f th e Sw it ch , an d to yo u r m ai n s s ock e t . The Switc h has no ON /OFF swi tch; the only m ethod of connecti ng o r disconnec ting main s po wer is through the power cord.
Connecti ng Equipme nt to the Conso l e Port 2- 7 Conn e cti n g Equi p men t to th e Cons ole Po rt The Switch console port settings are set to: ■ 8 data b its ■ no parity ■ 1 stop bi t The terminal c onnected to the console po rt on the Switch m ust be configured with the sam e setting s.
2- 8 C HAPTER 2: I NSTALLATION AND S ETUP Conne ctin g a W orksta tion Runn ing SLIP Y ou c an communicate w ith the Switch v ia the con- sole port from a workstat ion running SL IP (Serial Line Intern et Pr o t o col). In this way , you can pe r form out-of-band managem ent using T elnet or SNMP .
3 S ETTI NG U P FOR M ANAGEM EN T Met hods of Man aging the Sw itch 1 000 Y ou c an m anage the S witch in four w ays: ■ Using the VT100 interface by connectin g a VT1 00 terminal (or wo rks tation with terminal emulation softwar e) to the Switch cons ole port.
3- 2 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Usin g T e ln et Any T elnet facility that emulates a VT100 terminal should be able to c omm unicate with the Switch over a TCP/IP network. Up to thre e active T elnet ses- sions c an acce ss the Switc h conc urrently .
Managing Ove r The Network 3- 3 If your n etwork is inter nal to your orga nization only , you m ay use any a rbitrary IP addres s. We sug- gest you use a ddresses in the series 191.100.X.Y , where X and Y are numbers betwe en 1 and 2 54. Use 191.101.
3- 4 C HAPTER 3: S ETTING U P FOR M ANAGEMENT Nav igating th e VT100 Scr eens Screen C on ventio n s T o di ffer entiate types of information, the VT100 scre ens use the following conventions: Ty p e o f informati on Show n on sc reen as.
Navi gating t he VT100 Screens 3- 5 Ke yboar d Shor tc uts Ther e ar e several special charac ters or combinat ions of character s that allow you to make shortcuts. [T ab] allows you to move from one field to the next, on any s creen, without m aking any changes .
3- 6 C HAPTER 3: S ETTING U P FOR M ANAGEMENT S ett ing U p th e S wit ch fo r Mana gemen t The following section s describe how to get started if you want to us e an SN MP Ne twork Mana ger to ma na g e th e S wi t c h. It as su m es yo u a re al read y familiar wi th SNM P ma nagement.
Sett ing Up t he Swit ch f or Manage ment 3- 7 Loggi ng On At the Logon screen displayed in Figure 3-2, enter your user name and passw ord ( no te that they are both case-sensitive ): ■ If you have bee n assign ed a us er na me a nd p ass- wo rd , en te r th o se de t a il s .
3- 8 C HAPTER 3: S ETTING U P FOR M ANAGEMENT After Lo gg ing On When you have successfully logged on to the Switch, the Main Menu sc re en is di sp layed as show n in Figure 3-3. From here, you can s elect the options needed to m a nage t h e uni t. Refer to the scr een map on page 4-1 .
Sett ing Up t he Swit ch f or Manage ment 3- 9 Swi tch Ma nagemen t S etu p The Managem ent Setup screen allows you to con- figur e IP , IPX and SL IP parameters for t h e Swi tch. This scr een also allow s you to display scr eens for setting u p the console po rt and tra ps.
3-10 C HAPTER 3: S ETTI NG U P FOR M ANAGEMENT If you suspect that there is a prob lem with t he Switch th at has not been detected by the Normal test s, set this field to Extended and reset the Swit ch (r efer to “ Resetting the Switch” on pa ge 4- 27 ).
Sett ing Up t he Swit ch f or Manage ment 3-11 SETUP TRAPS Selec t thi s button to display the setup screen for trap parameters. T rap s etup is de sc ri bed i n “ S etting Up T raps” on pa ge 4-2 4 . CONSOLE PORT Select this button to di splay the setup screen for console port parameters.
3-12 C HAPTER 3: S ETTI NG U P FOR M ANAGEMENT Loggi ng Of f If you have fin ished using the V T100 managem ent interfa ce, select the LOGOFF option fr om the bottom of t h e Main Menu scr een. If you a ccessed the VT10 0 ma nagement interface usi ng a T e lnet ses- sion or m odem connec tion, the c onnect ion is cl osed automatically .
4 M A N A G I N G T H E S W I T C H 1000 Chap ters 4 , 5 and 6 desc ribe all man ag emen t facilit ies for the Sw itch 1000. While following steps in these chapters, y ou may find the screen m ap bel ow use ful: F igur e 4-1 Scr een map If an A TM OC-3c Module is installe d i n the Switch, extra s creens are a vailable.
4- 2 C HAPTER 4: M AN AGING T HE S W ITCH 1000 S ett ing Up Use rs Fr om the Mai n Menu, s elect US ER ACCESS LEVELS. The User Ac c ess Lev els scr een appears as sh own in Fig ure 4-2 . Fr om this screen you c an access: ■ LOCAL SECU RITY scr e en — This allo w s y ou to set up access levels for users on the Switch.
Creati ng a New User 4- 3 Cr eating a New User These steps as sume the User A ccess Levels scr een is displayed. 1 Sele c t the CREA TE USER o ption . The Cr eate User screen is di spla yed, as shown in F igure 4-3 . 2 Fi ll in the f ields and assign an access level for the new user .
4- 4 C HAPTER 4: M AN AGING T HE S W ITCH 1000 Deleting a User These steps as sume the User A ccess Levels scr een is displayed. 1 Sele c t the DELETE USERS option . The Del ete Users screen is di spla yed, as shown in F igure 4-4 . 2 Use the spacebar to highlig ht the user that you want to delete.
Editing Use r Det ail s 4- 5 Editing User De t ails These steps as sume the User A ccess Levels scr een is displayed. 1 Sele c t the EDI T USER option. Th e Edit Us er sc reen is displayed, as shown in Figure 4-5 . 2 Fill in the fields as required. 3 Whe n you ha ve com p let ed th e ch ang es , sele ct O K.
4- 6 C HAPTER 4: M AN AGING T HE S W ITCH 1000 Assigning Local Security The Local Security scr een shows a matrix of options for access method (Con sole Port, Rem ote T eln et, Communi ty-SNMP) and acce ss level. These steps as sume the User A ccess Levels scr een is displayed.
C hoosing a Switc h Management Lev el 4-7 Cho o sin g a Switch M anagem ent Level The Swi tch Management s creen al l ows you to: ■ Choose b etween m anaging a port, the unit, or a VLAN ■ Display .
4- 8 C HAPTER 4: M AN AGING T HE S W ITCH 1000 STP Use this button to display screens for m anagi ng Spanni ng T ree Protocol (STP) information for the level of ma nagement you hav e chosen ( port o r VLAN). Refe r to “ Spanning T ree Proto col” on pa ge 5-12 .
Sett ing Up the Switch Uni t 4- 9 Setting Up the Swit ch Unit With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Unit , then s elec t t h e SETUP b u tto n.
4-10 C HAPTER 4: M ANAGING T HE S WITCH 1000 PA C E Enable / Di s able Th is field allo ws you to enable or disabl e P ACE (Priority A ccess C ontrol Enabled ) for all po rts on t h e Sw itch.
Sett ing Up the Switch Uni t 4-11 SD B Ag eing Ti me This fi eld a l lows you to specify the ageing time (hours:mi nutes) for all non-perma- nent entries i n the Switch Databa se of t h e unit. Y ou can set an ageing time in the range 0 minutes to 277 hou rs, with a defa ult of 30 m inutes.
4-12 C HAPTER 4: M ANAGING T HE S WITCH 1000 S ett ing Up the Swi tc h Port s With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Port . Choose the appr opriate port, th en select the SETUP button. The Port Setup scr een is displayed as shown in Figure 4-11 .
Setti ng Up the Switc h Ports 4-13 IFM is not a v ailable on a port w hich has full duplex enabl ed: ■ If the Duplex Mode fiel d in this screen is set to Full Duplex, the Intelligent Flow Managem en.
4-14 C HAPTER 4: M ANAGING T HE S WITCH 1000 Duplex Mo de H alf Duplex / Full Duplex / Unit Default This field al lows yo u to specify th e dupl ex mode of th e port: ■ Full Dupl ex — Fu ll d up le x al low s f ra mes to b e transmitted and r e ceived simultane ously and, in effe c t, doubles the potential throughput of a link.
Setti ng Up the Switc h Ports 4-15 Risi ng Ac tion none / event / disable p ort / disable port/n otify / blip / blip p ort/notify Use this field to specify the action for the alarm to take when it r e.
4-16 C HAPTER 4: M ANAGING T HE S WITCH 1000 S ett ing U p th e S wit ch D ata base (S DB) The Swi tch maintai ns a database of devic e addre s ses that i t receiv es on its ports . It u ses the information in t h is da tabase to decide whet her a fra me should be forwarded or filtered.
Sett ing Up the Swit ch Dat a base (SDB) 4-17 The Da tabase V iew The Unit D atabase View scr een, a s s hown in Figure 4-12 , allows y ou to view and configure the Switch Data b ase . T o access the Unit Database View scr een, displ ay the Switch M anagem ent sc reen, choo se the m anage - ment leve l Unit , then s elect the SDB button.
4-18 C HAPTER 4: M ANAGING T HE S WITCH 1000 INS ERT This button lets yo u insert an entry into the database. Y ou cannot i nsert an entry for a p ort which uses AutoSel ect VLAN Mode. DELETE This button al lows yo u to delete e ntries from the database.
Sett ing Up Re silien t Links 4-19 Settin g Up Resilien t Links Y ou c an co nfigu re a S witc h to p rovide resilien t links to another device so tha t network di sruption is m ini- mize d if a link fail s. A r esi lie nt li nk p air c onsists of a main link and a standby link.
4-20 C HAPTER 4: M ANAGING T HE S WITCH 1000 Conf igurin g Resi lient Li nks With the Swit c h Management scr een d ispl ay ed, cho ose the p ort tha t w ill be set u p as t he m a in port in the res ilien t link p air , the n s elec t th e RE SIL- IENCE button.
Sett ing Up Re silien t Links 4-21 ■ Both Failed — Although the resilient link is cor- rectl y c onfigured, both l inks have failed. This could be due to loose connectio ns or c abl e dam- age. ■ Un kn o wn — The netwo rk configuration has changed and the resil ie nt link pair no longe r con- forms to the rules.
4-22 C HAPTER 4: M ANAGING T HE S WITCH 1000 View ing th e Resili ent Setu p With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Unit an d se le c t t he RESIL IENCE button. The Un it R es ilienc e Sum m ary scree n i s di spla yed a s shown in F igur e 4-15 .
Sett ing Up Re silien t Links 4-23 Pair En able En ab l e d / D is a bl e d This r ead-only fi eld displ ays whe the r the resilie nt link pair is current ly enabled or disabled . Y ou ena ble or disable a resilient link pair u sing the Port Resilien ce scr e en described i n “ C onfiguring Resilient Links” on page 4-20 .
4-24 C HAPTER 4: M ANAGING T HE S WITCH 1000 Set t in g U p T r ap s T r aps are m essage s sent ac ross t he net work to a n SNMP Network Manage r . They al ert t h e network administrator to faults or chang es at the Switch device. Y our Network Manager may automa ticall y s et up tr aps in the Sw itc h T ra p T able.
Sett ing Up the Conso l e Port 4-25 Set ti n g U p t he Cons o le P or t Fr om the S witch Mana geme nt Setup screen, de sc ri bed i n Chapter 3 , sel ect th e CONSOLE PORT button. The Cons ole Port S etup sc re e n is displayed as sh own in Fig ure 4-17 .
4-26 C HAPTER 4: M ANAGING T HE S WITCH 1000 Speed 1200 / 2400 / 4800 / 9600 / 192 00 This field allows you to select the c o rrect l ine speed (baud rate) for your terminal or modem. If you have enabl ed auto-configuration, l ine speed is set automatically .
Res e tti ng th e Sw i tch 4-27 Res ettin g the Swi tch If you suspec t a problem with the S witch, you can re se t it . 1 Fr om the Main Menu, selec t the RESET option. The Reset scr een is displaye d as show n in Figure 4-18 . 2 Sele c t OK. Rese ttin g the Switc h in t his way is si mila r to p er- forming a power -off/ on c ycle.
4-28 C HAPTER 4: M ANAGING T HE S WITCH 1000 Init ializing the Swi tch This scr een allo ws you to perform a res et as described in the previous section, a nd in addition, returns non-volatile data stored on t h e unit to its factory defaults (show n o n page 1-14 ).
Up gr a d in g S of tw ar e 4-29 Up gradin g Soft war e When 3C o m iss ues a new version of agent softw are for the Sw itch, you can obta in it from the 3Com’ s information d elivery syste ms desc ribed i n “ O n line T ech n ical S erv ic es” on pa ge F- 1 .
4-30 C HAPTER 4: M ANAGING T HE S WITCH 1000 5 Sele c t OK. During the do wnload, the M GMT L ED flashe s green and the scr een is lo cked. W hen the down load is com plet e, the Sw itch is rese t.
5 A DV A NCE D M ANAG EMEN T Virtual LANs (VLANs) Setting up Virtual Local Area Networks ( VLANs) on the Switch 1 000 prov ides you with less time- consuming network a dministration and mo re ef fi- cient network op eration.
5- 2 C HAPTER 5: A DVANCED M ANAGEMENT How VLANs Ease Chan ge and Movemen t W ith tr a ditional IP networks, network administra- tors spend muc h of their time dealing w ith move s and cha nges. If user s mov e to a different IP sub net, the IP a d dresses of each endstation must be updated m anually .
Vir tual LANs (VLANs) 5- 3 VLAN s and the Switc h The Switch 1000 supports VLANs which con sist of a set o f switch ports. Each switch port can only belong to o ne VL AN a t a time, r egardless of the device to which it is attached. Each Sw itch 1000 can supp ort up to 16 VLA Ns.
5- 4 C HAPTER 5: A DVANCED M ANAGEMENT AutoSelect VLAN Mod e works as follows: 1 When an endstation is co nnected to a Sw itch or moves from one p ort to ano ther , the Switch lear ns the MAC address of the endstation.
Vir tual LANs (VLANs) 5- 5 For information abo ut how to set up VLANs using AutoSelect VLAN Mod e, r e fer to Chapter 5 on page 5-11 . For m o r e in formation about the VLA N Server data - base, r efer to the documentation suppl ied with 3Com’ s T ranscend Ente rprise Manager .
5- 6 C HAPTER 5: A DVANCED M ANAGEMENT Examp le 2 The exampl e shown in Figure 5-6 illustrates two VLANs spanni ng two Sw itch 1000 units. VLAN 1 is able to talk to V LAN 2 using the connection between ea ch V LAN a n d the r outer . Ports withi n the same VLAN but on diff erent Switche s com municate using the V L T .
Vir tual LANs (VLANs) 5- 7 Examp le 3 The exampl e shown in Figure 5-7 illustrates two VLANs spanni ng three Switch 1000 un its and a basement Switc h 300 0 FX with a Plug-in Module. Each Switch 1000 connects into the basement Switch u sing a VL T . The attached rout er allows the two VL ANs to com municate w ith eac h other .
5- 8 C HAPTER 5: A DVANCED M ANAGEMENT Setting Up VLAN s on the Switch The VLAN Setup scr een allows you to: ■ Assign ports t o VLANs, if those ports use Port VLAN Mode ■ Define a backb one port f.
Vir tual LANs (VLANs) 5- 9 ■ Au t oSe l ec t — The port us es AutoSelec t V LAN Mode. For more in formation about AutoSe- lect V LAN Mode, r e fer to “ U sing AutoSel ect VLAN Mode” on page 5-3 .
5-10 C HAPTER 5: A DVANCED M ANAGEMENT Assigning a Port to a VLAN Wh en Using Po rt VLAN Mode 1 In t h e Port ID field , enter the ID o f th e requ ir ed port. 2 In t h e VLAN ID field, enter the ID of the required VLAN . 3 Sele ct APPL Y . CAUTION: Initia ll y , a ll Swi tch p ort s belo ng to th e Default VLAN (VLAN 1).
Vir tual LANs (VLANs) 5- 11 Setti ng Up V LAN s Us ing A uto Se lec t VLA N Mo de T o se t up VLANs using AutoSelect VLAN M ode, you need to: ■ Specify i nfo rmation about the VLAN Server ■ Speci .
5-12 C HAPTER 5: A DVANCED M ANAGEMENT Spann ing T r ee Proto col Using the Spanni n g T ree Pr oto col (STP) function ality of your Switch makes your network more fault toler- ant. The foll o wing sect ions explai n m or e about STP and the STP feature s supported by the Switch.
Spannin g T ree Pro tocol 5-13 F igur e 5-1 0 A netwo rk configu ration tha t create s loops. F igur e 5-1 1 T raffi c flowin g throu gh Bridge s C and A Fig ure 5 -12 T ra ffic flow ing thr ough Brid.
5-14 C HAPTER 5: A DVANCED M ANAGEMENT How S TP Wo rks STP Initializ ation Initi a lly , the STP sy stem require s the fol lowin g b efore it can c onfigure the netwo rk: ■ Communi cation be tween all the b ridges.
Spannin g T ree Pro tocol 5-15 An Example Figure 5-13 illustrate s part of a network. All bridges have a path cost v alue ass igned to e ach port, identi- fi ed b y PC=xxx (whe r e xxx i s the va lu e). Bridge A is selec ted by STP as the Root Bri dge, becau se it has the lowest Bridge I dentifier .
5-16 C HAPTER 5: A DVANCED M ANAGEMENT STP C onfi guration s Figure 5-14 shows two possible STP confi gurations using Supe rStack II Swi tch units: ■ Confi gu rati on 1 — Re dun dan cy fo r B ack - bone Lin k In t h is confi g uration, a Swit ch 1000 and Sw itch 3000 TX both h ave STP enabled and are con- nected by two Fast E ther net links.
Spannin g T ree Pro tocol 5-17 Enab ling STP on th e S witch T o enab le STP on your Switch: 1 Fr om the VT10 0 Ma in M enu, selec t SWITC H MA N- AGEMENT . The S witch Managemen t sc reen is d is- play ed. 2 In t he Mana gement Level fi eld, choose Unit.
5-18 C HAPTER 5: A DVANCED M ANAGEMENT Conf iguri ng ST P on the Swi tch CAUTION: Y o u should not configu re any STP parameters unl ess y ou ha ve consi derable know l- edge and experi ence with STP . Configu ring the STP Pa ramete rs o f VLANs The Switch h as a completel y s e parate STP s ystem fo r each VL AN th at you have s pecified.
Spannin g T ree Pro tocol 5-19 Forward Delay 4... 30 This read-onl y fiel d shows the time ( in se conds) tha t the po rts on the Swi tch spend in the li s tening and learning states. For mor e informat ion abo ut these states, r efer to “ Configur- ing the STP Para meters of Ports” on pa ge 5-20 .
5-20 C HAPTER 5: A DVANCED M ANAGEMENT Configu ring th e STP Pa ramete rs of Port s The Port STP scr een allows you to set up and manage the STP parameters of each port on the Switch. T o a ccess th e Po rt STP s cr een: 1 From t he Ma in Me nu , select SW ITC H MA NAG E- MENT .
Spannin g T ree Pro tocol 5-21 Designated Roo t This read-onl y field s hows the Bridge Identifier o f the Roo t Bri dge. Designated Cos t This r ead-only field shows the path cost from the Root Bridge to the Desi gnated Bridge Port for the c urr ent p ort ’ s segment.
5-22 C HAPTER 5: A DVANCED M ANAGEMENT RMON Using the RMON ( Remote Moni toring) capabi lities of your Switch allows network administrators to impr ove their ef ficienc y and reduce the load on their network. The foll o wing sect ions explai n m or e about the RMON c oncept a nd the RMON fea tures supported by th e Sw itch.
RMON 5-23 Abou t the R M ON Gr oups The IETF define n ine gr o ups of E thern et RMON sta- tistics. This section describes these groups, and details how they can b e used. Statist ics The Statistics group provides tra ffi c and e rror statis- tics show ing packe ts, bytes , broadcasts, mu lticasts and err ors on a LAN segment or VLAN.
5-24 C HAPTER 5: A DVANCED M ANAGEMENT Matrix The Matrix group shows the amount of traf fic and number of e rrors between p airs of devices on a LAN segmen t or V LAN. For each pair , the Matrix group maintain s counters of the numb er of pa ckets, number of octets, and e rror packets between the nodes.
RMON 5-25 Be ne fi ts o f RM O N Using the RMON f eatures of your S witch has thre e mai n advantages : ■ It improves your ef ficiency ■ It allows you to m anage your network i n a more proactive .
5-26 C HAPTER 5: A DVANCED M ANAGEMENT RM ON a nd the Sw i tch RMON requires on e probe pe r LAN segment, a nd stand-alone R MON probes ha ve traditionally b een expen sive. Therefor e, 3Com ’ s appr o ach h a s been t o build an inex pensive RMON pr o be into the Smart- Age nt of each Switch.
RMON 5-27 W hen using the RMON features of the Sw itch, you should note the following: ■ After the default sessi ons ar e cr eated, they ha v e no spe cial s tatus. Y ou c an delete or change them a s required. ■ The Switch 1000 can forward a very large volum e of pac kets per sec ond.
5-28 C HAPTER 5: A DVANCED M ANAGEMENT Ab out A larm Ac tio ns Y ou c an d efine up to 700 a larms for the Switch. T he acti ons that you can define for each alarm ar e shown in Ta b l e 5 - 3 . Ta b l e 5 - 3 Ala r m Ac ti ons Act ion H i gh T hres h old Low Th reshol d No ac t ion .
RMON 5-29 About Defau lt Alarm Settings A new or i nitialized Sw itch has fou r a larms defined for each port: ■ Bandwidth us ed ■ Broadcast bandwidth used ■ Per centage of packets forwar ded ■ Errors per 10,000 p ackets The default values f o r eac h of these ala rms ar e given in Ta b l e 5 - 4 .
5-30 C HAPTER 5: A DVANCED M ANAGEMENT.
6 S TA TUS M ON ITORIN G AND S TA TI STI CS This c hapter des cribes how to v iew the c urrent operating s tatus of the Switc h 10 00, how to dis- play any err or information in a fault l og and how to carry ou t a remote pol l to ch eck the response of another network de vice.
6- 2 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS Sum m ary St atistics With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Unit , then s elec t t h e ST A TISTICS button. The Summary Statisti c s scr een i s displayed, as shown in Figure 6-1 .
Port St atisti cs 6- 3 Por t Statistic s With the Swit c h Management scr een d ispl ay ed, choose the ma nagem ent lev el Port , then sel ect the ST A TISTICS b utton.
6- 4 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS Por t T r af fic Statisti cs With the Port Statis tics scr een d ispl ayed, select the TRAFF I C ST A TISTI CS button. T h e P o r t T raf fi c Statistics screen is di spla yed, as shown in F igure 6-3 .
Port T raf fic St atisti cs 6- 5 Frag me nts The total number of packets r ec eived that wer e not an integral number of octets in length or that had a bad Fram e Check Sequenc e (FCS), and were less than 64 octets in length ( excluding fram- ing bits, bu t i ncludi ng FC S octets).
6- 6 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS Port Erro r A na lys is With the Port Statis tics scr een d ispl ayed, select the ERROR ANAL YSIS button.
Port Er ror An alysi s 6- 7 Jabbers The t otal number of packets received that were longer than 8K octets (excluding framing bits, but including FCS o ctets). CLEAR SC REEN CO UNTER S Select this button to set all co unters sho wn on the screen to z ero.
6- 8 C HAPTER 6: S TATUS M O NITOR ING AND S TATI STICS S tat us M oni torin g The status s cr een provid es read -only info rmation about the S witch 100 0. This i nformation may be useful for y o ur T ec hnical Support r e presentativ e if you have a pr ob lem.
Fau lt L o g 6- 9 Fault Lo g The Fault L og display s read-only information a bout the Swi tch which is updated whenever an abnor- mal co nd ition is dete cte d. Th is infor m atio n is for internal 3C om u se only . Y ou may be asked to quote this i nformation if reporting a fa ult to your supplier .
6-10 C HAPTER 6: S TATUS M ON ITOR ING AND S TATISTI CS Rem ote Pollin g The Remote Poll scree n allows you to send a s ing le fr ame to a remote dev ice to see i f that devic e is responding. This can help to lo cate the s ource of a network problem.
A S AFE TY I NFO RMA TION Y ou m ust read the following safety information before carrying out any installation or removal of compon ents, or any m aintenance procedures on the Switch 1 000. Impo r tan t Safety Inf o rmatio n WARNING: Warnings contain directions that you must follow for yo ur personal safety .
A-2 A PPENDIX A: S AFETY I NFORMATION ■ It is ess ential that the mains socket outl et is installed near to t h e unit and is a ccessi ble. Y o u can only disconnect the unit by r emoving the appliance c oupler from the uni t.
Impor tant Sa fety In form atio n A-3 Pow er Su pply and Fuse The unit automatical ly adjusts to the su pply volt- age. Th e fuse i s suita ble for both 1 10V A.C. a nd 220–240V A .C. operation. WARNING: Ensure that the power is disconnected before openin g the fuse hol der co ver .
A-4 A PPENDIX A: S AFETY I NFORMATION L ’informat io n de Sécur ité Importan te A VERTISSEMEN T : Les avertissem ents contiennent les directions que vous dev ez suiv re pour votre séc u- rité personnel le. S uivez toutes les directives avec soin.
L ’infor m ati on de Sécuri té Impor t a nte A-5 ■ Assurer que l'e ntrée de la source d'alime ntation soit débranchée avant d'ouvrir le couvercle de fusible du conn ecteur IEC o u d'enlever le c ouver- cle de l'uni té.
A-6 A PPENDIX A: S AFETY I NFORMATION Les Po rts RJ45 Ceux-ci son t les prises de courant de d onnées R J45 protégé es. Ils ne pe uven t pas être ut ilisés comm e prises de c ourant téléphoni ques. Brancher s eule- ment les c onnec teurs RJ45 de d onnées à ces prises de courant.
Wich tige Siche rheitsi nformati onen A- 7 Wi cht ige Si ch erhe i ts inf or mati o nen WARNUNG: Warnunge n enthalten Anweisungen, die zur eig enen Siche rheit unbedingt z u b eachten sind.
A-8 A PPENDIX A: S AFETY I NFORMATION St r omvers orgung und Siche run g Das Gerät stell t sich automatisch auf die V ersor- gungsspa nnung ein. Die Sicherung ist sowohl für 110V A .C. wie für 220–240V A. C. geeignet. WARNUNG: V or dem Ö ffnen der Sicherungsha lter- ung da s Gerät v om Ne tzstrom trennen.
B S CR EEN A CC E S S R IGH TS The foll o wing table lists the righ ts assigned to each level of us er for ac ce ssing and editing Switch 1000 scre ens via the V T100 interface. All ac cess rights ar e r e ad-and-write unless othe r- wise sta ted. Sc reen A vailabl e to.
B-2 A PPENDIX B: S CREEN A CCESS R IGHTS VLAN STP Mon itor read-on ly Mana ger Secu rity VL AN Server Mon itor read-on ly Mana ger Secu rity VLAN Set up Mon itor read-only Mana ger Secu rity User A cc.
C T R O U B L E - S H O O T I N G The follo wing is a l ist of problems you ma y see when managi ng the Switch w ith su ggested c ourses of correc tive acti o n to take. If you have a problem which is not li sted here an d you c annot solve it, please contact your l ocal technical support r e presen- tative.
C-2 A PPENDIX C: T ROU BL E - SHOOTING Usin g t he VT1 00 Interface Th e initi al Main Bann er scr een does no t disp lay : Check that your terminal or terminal emulator is corr ectly con f igured to operate as a VT100 terminal. For cons ole port a ccess, yo u ma y nee d to press [Return] several times befor e the Main Banner appears.
Using the Switch C-3 T ry accessing the device through a dif ferent port. If you can now access the de vice, a problem w ith the original port i s indicated. Re-examine the connec- tions and cabling. There may b e a network problem pr eventing you accessing the device over the network .
C-4 A PPENDIX C: T ROU BL E - SHOOTING Y ou ha ve adde d the Sw itch 100 0 to a n already busy net work, a nd respo ns e t imes a nd traffic levels h ave increased: Y ou ma y have added a gr ou p of users to one of the Switch 100 0 po rts via a repeater or switch, and not turned of f IFM.
Using the Switch C-5 T o avoid this situation, we r e com mend that you connect the two S uperStack II Switch units using a Virtual LAN T r u nk (VL T) . For m or e information about VL T s, refer to “ C on necting C ommon VLAN s Between Sw itch Units” on page 5-3 .
C-6 A PPENDIX C: T ROU BL E - SHOOTING.
D P IN - OU TS Nu ll Modem Cable 9-pin to RS-232 25-pi n PC-A T Serial Cabl e 9-pin to 9-pin.
D-2 A PPENDIX D: P IN - OUTS Mod em Ca ble 9-pin to RS-232 25-pi n RJ45 Pi n Ass ignme nts Pin as signmen ts ar e ident ical for 10BASE-T an d 100BA SE-TX RJ45 connectors.
E S WITCH 10 00 T ECHN ICAL S PECIFICATION S Phys ical Dimensions Heig ht: 76mm (3.0i n.) x Width: 483 mm (19. 0in .) x Depth: 300m m ( 12.0 in.) Weig ht: 4.
E-2 A PPENDIX E: S WITCH 1 000 T ECHNICAL S PECIFI CATIONS Sta ndar ds Supp orted SNMP SNMP pr otocol (RF C 1157 ) MIB-I I (RFC 12 13) Brid ge MIB (RFC 149 3) Repeat er MIB (RFC 1 516) V LAN MI B ( RF.
F T ECHNI CAL S UPPORT 3Com provides easy access to t e chnical support information through a variety of ser v ices. This appendix describes th ese services. Information contained in t h is appendix is c o rre c t at time of pu blication. F or the very l atest, we recom- mend tha t you ac cess 3Com Corporation’ s World W ide Web site.
F- 2 A PPENDIX F: T ECHNI CAL S UPPORT Acc ess by Di gital Mo dem ISDN use rs can dial i n to 3ComBBS using a digi tal modem for fast access up to 56 Kbps.
Suppor t from Y our Ne twork Suppli er F-3 S uppor t f ro m Y o ur N et work Supp lier If addi tional a s sistance is r e quir ed, contact your network su pplier .
F- 4 A PPENDIX F: T ECHNI CAL S UPPORT R eturni ng Pr od uc ts for Re pair Before you sen d a p roduct dire c tly to 3 Com for repair , you must first be obtain a Re turn Materials Authorization (RMA) num ber . Products sent to 3Co m wi th out R MA n um ber s w ill b e retu r ned to the sender unopene d, at the se nder’ s expe nse.
G LOSSAR Y 10BASE-T The IEEE 80 2.3 specific ation for Ether net over Unsh ielde d T wisted Pai r ( UTP) cab ling. 100BASE-FX 100Mbp s Ethern et im plemen tation over fiber . 100BASE-TX 100Mbp s Ethern et im plemen tation over Category 5 and T ype 1 T w isted Pair cabling.
2 G LOSSARY bridg e A device tha t interc onne cts local or remo te net- works no matter what higher leve l pr otocols ar e involved. Bridges form a single logic al network, cen- tralizi n g netw ork administration. broad cast A message sent to all destination devices on the network.
G LOSSARY 3 I ntell igent S wit ching Mode A packet forw arding m ode, where th e Switch m oni- tors the am ount of e rror traf fic on the netwo rk and changes the method of pac ket forwarding accord- ingly . IPX Internetwork Packet Excha nge. A protocol allowing communica tion in a NetWar e netwo rk.
4 G LOSSARY protoco l A set of rules for c o mmunication betwe en devices on a network. Th e ru les di c tat e format, timing, sequenc ing and e rror control. resili ent link A pair of ports tha t c an be configured so that one will take over data transmission should the other fail.
G LOSSARY 5 swi tch A devi ce which fil ters, forwards and floo ds fram es based on the fram e’ s destin ation address. The swit c h lea r ns the addres ses ass ociated w ith e ac h switch port and builds tables based on this informa- tion to be use d for the sw itching decisi on.
6 G LOSSARY.
I NDE X Numerics 100B ASE-TX port 1- 2, 1-11 10BA SE-T por t 1-2, 1-11 3Com Bulleti n Boar d Servic e (3 ComBBS ) F-1 3Com sal es off ices F- 3 3C om U RL F-1 3C om F act s F - 2 3C om Fo ru m F -2 A .
2 I NDEX r esetti ng to z ero 6-2, 6-5 , 6-7 Short E vents (po rt err or) 6-6 Cr eate Use r scre en 4-3 D Data Link Pr otocol field 3-10 dat a ba se. See Sw itch Dat abase DCD Con tr ol fiel d 4-2 5 d.
I NDEX 3 Standb y Links A vai labl e 4-20 ST AN DBY Por t 4-22 Standb y Port ID 4-20 Stop Bi t 4-26 STP Sta te 5-20 sys Name 4-9 Sys tem Up T ime 6-8 Thr ottle 4-24, 5- 11 T i me Sin c e T opo l o gy .
4 I NDEX perm anent entrie s 4-16 disp layi ng 4-17 speci fy ing 4-17, 4- 18 pi n assign ments mo dem cab le D-2 nul l modem cable D-1 RJ45 D -2 se ri a l ca b le D -1 pin - ou ts D - 1 Pl ug-i n Modu.
I NDEX 5 s erial por t. See con sol e por t Serve r Addr ess fiel d 4 -29 s ervers, c onnectin g 1-6 SLIP A ddre ss field 3-10 SLI P Su b net Ma s k f iel d 3- 1 0 SNMP 1-14, 3-6 Commu nity 4- 6 qui c.
6 I NDEX edi ting 4-5 set ting up 4-2 V ver s io n nu m be r boot so ftw ar e 6 -8 h a rdw a re 6 - 8 upgrad able soft w ar e 6- 8 Virtua l LAN T runks.
3C om Cor por ati on L IMITED W ARRANTY H ARD WAR E 3Com w arr ants its ha rdw a re pr od uc ts to b e fre e from d e fec ts in w ork m ans hi p and mate ri als , und er no rma l u se an d se rvice , .
E LECTRO -M AGN E TIC C OMPATI BILI TY FCC S TA TEMEN T This eq u ipment has been tested with a class A comput ing device a nd has been found t o com pl y wi th pa rt 15 of FCC Rul es.
Ein wichtiger Punkt beim Kauf des Geräts 3Com 1000 (oder sogar vor seinem Kauf) ist das durchlesen seiner Bedienungsanleitung. Dies sollten wir wegen ein paar einfacher Gründe machen:
Wenn Sie 3Com 1000 noch nicht gekauft haben, ist jetzt ein guter Moment, um sich mit den grundliegenden Daten des Produkts bekannt zu machen. Schauen Sie zuerst die ersten Seiten der Anleitung durch, die Sie oben finden. Dort finden Sie die wichtigsten technischen Daten für 3Com 1000 - auf diese Weise prüfen Sie, ob das Gerät Ihren Wünschen entspricht. Wenn Sie tiefer in die Benutzeranleitung von 3Com 1000 reinschauen, lernen Sie alle zugänglichen Produktfunktionen kennen, sowie erhalten Informationen über die Nutzung. Die Informationen, die Sie über 3Com 1000 erhalten, werden Ihnen bestimmt bei der Kaufentscheidung helfen.
Wenn Sie aber schon 3Com 1000 besitzen, und noch keine Gelegenheit dazu hatten, die Bedienungsanleitung zu lesen, sollten Sie es aufgrund der oben beschriebenen Gründe machen. Sie erfahren dann, ob Sie die zugänglichen Funktionen richtig genutzt haben, aber auch, ob Sie keine Fehler begangen haben, die den Nutzungszeitraum von 3Com 1000 verkürzen könnten.
Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit 3Com 1000. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei 3Com 1000 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
