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Part No. 060187-10, Rev D March 2005 OmniSwitch 6600 Family Advanced Routing Configuration Guide www.alcatel.com.
ii OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 This user guide documents rel ease 5.1.6 of the OmniSwitch 66 00 Family. The functionality described in this guid e is subject to change without notice. Copyright © 2005 by Alcatel Int ernetworking, Inc.
OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 iii Contents Contents ................. .................... ................ ............... ................ ................... ................ ....... ... Index-iii About This Guide .
Contents iv OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Configuring Redundant Switch es in a Stack for Gra ceful Restart .................... ..... 1-31 OSPF Application Example .................. ........ ........ .........
OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page v About This Guide This OmniSwitch 66 00 Family Advanced Routing Confi guration Gui de describes ho w to set up and moni- tor advanced routing prot ocols for operation in a live network en vironment.
Who Should Read this Manual? About This Guide page vi OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 Who Should Read this Manual? The audience for this user guide is network admi nistrators and IT support perso nnel who need to config- ure, maintain, a nd monitor switches and routers in a live network.
About This Guide How is the Information Organized? OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page vii How is the Information Or ganized? Quick Information . The chapter includes a specifications table that lists RFCs and IEEE specifications supported by the softwa re feature.
Documentation Roadmap About This Guide page viii OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 Stage 2: Gaining Familiarity with Basic Switch Functions Pertinent Documentat.
About This Guide Related Documentation OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page ix Related Documentation The following are the titl es an d descript ions of all the .
User Manual CD About This Guide page x OmniSwitch 6600 Family Adva nced Routing Con figuration Guide March 2005 User Manual CD All user guides for the OmniSwitch 6600 Family ar e included on the User Manual CD that accompanied your switch. This CD also includes user guides for ot her Alcatel data enterprise products.
OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-1 1 Configuring OSPF Open Shortest Path First rout ing (OSPF) is a shortest pa th first (SPF), or link state , protocol. OSPF is an interior gatewa y protocol (IGP) that distribu tes routing information between rout ers in a single Au tono- mous System (AS).
OSPF Specifications Configur ing OSPF page 1-2 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 OSPF Specifications RFCs Supported 1370—Appli cability S tatement for OSPF 1587.
Configuring OSPF OSPF Defaults Table OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-3 OSPF Defaults T able The following tabl e shows the default sett ings of the con figurable OSPF parameters. Parameter Description Comma nd Default V alue/Comments Enables OSPF .
OSPF Quick Steps Configur ing OSPF page 1-4 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 OSPF Quick Steps The followings steps are desi gned to show the user the necessary se t of commands for settin g up a router to use OSPF: 1 Create a VLAN using th e vlan command.
Configuring OSPF OSPF Quick Steps OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-5 9 Assign the OSPF interfac e to the area and the backbone using the ip ospf interface area command. For exampl e: -> ip ospf interface 120.
OSPF Quick Steps Configur ing OSPF page 1-6 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 12 You can di splay OSPF area setti ngs using the show ip ospf area command. For example: 13 You can display OSPF inte rface sett ings using the show ip ospf interface command.
Configuring OSPF OSPF Overview OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-7 OSPF Over view Open Shortest Path First routing (OSP F) is a shortest path first (SPF), or link -state, protocol.
OSPF Overview Configur ing OSPF page 1-8 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 OSPF Areas OSPF allows colle ctions of contiguo us networ ks a nd hosts to be grouped toget her as an are a . Each ar ea runs a separate co py of the basic l ink-state routing a lgorithm (usually called SPF).
Configuring OSPF OSPF Overview OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-9 Classification of Routers When an AS is split into OSPF areas , the route rs are further divided according to fun ction into the follow- ing four overla pping categori es: • Internal rout ers .
OSPF Overview Configur ing OSPF page 1-10 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Vi rt u a l L i n k s It is possible to define areas in such a way that the back bone is no lon ger contigu ous. (This is not a n ideal OSPF configuration, and maximum effort should be made to avoid this situ ation.
Configuring OSPF OSPF Overview OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-11 Stub Areas OSPF allows certain areas to be configured as stub areas . A stub area is an area with routers that have no AS external Link State Advert isements (LSAs).
OSPF Overview Configur ing OSPF page 1-12 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Not-So-Stubby-Areas NSSA, or not-so-stubby area, i s an extension to the base OSPF specification an d is defined in RFC 1587.
Configuring OSPF OSPF Overview OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-13 Equal Cost Multi-Path (ECMP) Routing Using information from its continuously updated datab a ses, OSPF calculates the shor test path to a given destination.
OSPF Overview Configur ing OSPF page 1-14 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 When a takeov er occurs, which c an be planned (e.
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-15 Configuring OSPF Configuring OS PF on a router requires several steps. Depending on your requiremen ts, you may n ot need to perform all of the ste ps listed below.
Configuring OSPF Configur ing OSPF page 1-16 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Preparing the Network for OSPF OSPF operates on top of normal switch functions, using ex isting ports, vir tual ports, VLANs, etc.
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-17 Activating OSPF For OSPF to run on the router , the advanced rou ting image ( Hadvrout.
Configuring OSPF Configur ing OSPF page 1-18 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Creating an OSPF Area OSPF allows a set of network devi ces in an AS system to be grouped together in area s . There can be more than one router in an area.
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-19 Enabling and Disabling Summarization Summarization can also be enabled or disabled when crea ting an area.
Configuring OSPF Configur ing OSPF page 1-20 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Configuring Stub Area Default Metrics The default metric co nfigures the type of cost metric that a default area border router (ABR ) will adverti se in the default summa ry Link State Advertisement (LSA).
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-21 1 Enter the following comm ands on Router B: -> ip load ospf -> ip ospf area 0.0.0.0 -> ip ospf area 0.0.0.0 status ena ble -> ip ospf area 1.
Configuring OSPF Configur ing OSPF page 1-22 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Creating OSPF Inter faces Once areas have been established, interfaces ne ed to be crea ted and assigned to the areas.
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-23 Interface Authentication OSPF allows for the u se of authentication on co nfigured interfaces.
Configuring OSPF Configur ing OSPF page 1-24 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Modifying Inter face Parameters There are several in terface parameters that can be mo dified on a specifi ed interface. Most of t hese deal with timer sett ings.
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-25 Creating V ir tual Links A virtual link is a link between two backbones throu gh a transit area. Use the ip ospf virtual-link command to create or delete a virtual link.
Configuring OSPF Configur ing OSPF page 1-26 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Creating Redistribution Policies and Filters Redistribution in OSP F controls the way routes are learned an d distributed in the OSPF netw ork.
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-27 Creating A Redistribution Policy Once a router is set as an ASBR and redistribu tion is enabled, a redistribution policy can be cre ated.
Configuring OSPF Configur ing OSPF page 1-28 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 In certain cases, redistribution can ei ther be an adjace nt route or a subnet. In these cases, the redistributed route can correspond to several ro utes .
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-29 Configuring Router Capabilities The following list sh ows various commands tha t can be useful in t ailoring a router’s p erformance capabili- ties.
Configuring OSPF Configur ing OSPF page 1-30 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Configuring Static Neighbors It is possible to co nfigure neighbor s statically on No n Broadcast Mult i Access (NBMA), point-to-po int, and point-to -multipoint n etworks.
Configuring OSPF Configur ing OSPF OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-31 Configuring Redundant Switches in a Stack for Graceful Restar t By default, OSPF graceful restart is disabled.
OSPF Application Example Configur ing OSPF page 1-32 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 OSPF Application Example This section will de monstrate how to set up a simple OSPF net work. It uses thre e routers, each wi th an area.
Configuring OSPF OSPF Application Example OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-33 Step 1: Prepare the Routers The first step is to create the VL ANs on each router, add an IP interface to the VLAN, assign a port to the VLAN, and assign a router identifi cat ion number to the routers.
OSPF Application Example Configur ing OSPF page 1-34 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Router 2 (using ports 2/1 a nd 2/2 for the b ackbone, and ports 2/3-5 for en d devices): -> vlan 12 -> ip interface vlan-12 vlan 12 ad dress 12.
Configuring OSPF OSPF Application Example OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-35 Step 2: Enable OSPF The next step is to load and enable OSPF on eac h router.
OSPF Application Example Configur ing OSPF page 1-36 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 -> ip ospf interface 12.0.0.1 -> ip ospf interface 12.0.0.1 area 0.0.0.0 -> ip ospf interface 12.0.0.1 stat us enable -> ip ospf interface 10.
Configuring OSPF OSPF Application Example OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-37 -> ip ospf interface vlan-20 -> ip ospf interface vlan-20 area 0.0.0.2 -> ip ospf interface vlan-20 statu s enable Router 3 -> ip ospf interface 23.
Verifying OSPF Configuration Configuring OSPF page 1-38 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 V erifying OSPF Configuration To display info rmation about a reas, inter.
OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page A-1 A Software License and Copyright Statements This appendix co ntains Alcate l and third-pa rty software ven dor license and copyright st atements. Alcatel License Agreement ALCA TEL INTERNETWORKING, INC.
Alcatel License Agreement Software License and Copyright Statements page A-2 OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 3. Confidentiality. AII considers the Licensed File s to contain valuable t rade secrets of AII, t he unautho- rized disclosure of which could cause irrepa rable harm to AII.
Software License and Copyright St atements Alcatel License Agreement OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page A-3 10. Governing Law. This License Agreement shall be constr ued and governed in accordance with the laws of the Sta te of Califo rnia.
Third Party Licenses and Notices Software License and Copyright Statements page A-4 OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 Third Par ty Licenses and Notices The licenses and notices related only to su ch third party software are set forth below: A.
Software License and Copyright Statements Third Party Licenses and Notices OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page A-5 C. Linux Linux is wri tten and distrib uted under the GNU General Public License which mean s that its source co de is freely- distribut ed and avai lable to th e general pu blic.
Third Party Licenses and Notices Software License and Copyright Statements page A-6 OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 verbatim or with mod ifications and/or t ranslated in to another language. (Hereinafter , translation is included wi thout limitati on in the term “mo difi cat ion”.
Software License and Copyright Statements Third Party Licenses and Notices OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page A-7 b Accompany it wi th a written of fer, valid .
Third Party Licenses and Notices Software License and Copyright Statements page A-8 OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 consistent application o f that syste m; i.
Software License and Copyright Statements Third Party Licenses and Notices OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page A-9 Appendix: How to Apply These T erms to Y our .
Third Party Licenses and Notices Software License and Copyright Statements page A-10 OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 Material copyright Li nux Online Inc. Design and compilation copyright (c)1994-200 2 Linux Online Inc.
Software License and Copyright Statements Third Party Licenses and Notices OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page A-11 H. Apptitude, Inc. Provided with th is product is certai n network moni toring software (“Me terWorks/RMON”) licensed from Apptitude, Inc.
Third Party Licenses and Notices Software License and Copyright Statements page A-12 OmniSwitch 6600 Family Ad vanced Routing Co nfiguratio n Guide March 2005 L. Wind River Systems, Inc. Provided with th is product is certain software (“ Run-Time Module”) licensed from Wind River Sy stems, Inc.
OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 Index-1 Index A application exa mples OSPF 1-4, 1-32 area border rout ers 1-8, 1-9 areas 1-8 assigning interfaces 1-22 backbones .
Index Index-2 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 O Open Shortest Path First see OSPF OSPF 1-1 activating 1-17 application example 1-32 area border routers 1-8, 1-9 .
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