Cisco Systems IOS XR manual

RC-169 Cisco IOS XR Routing Configuration Guide Implementing OSPF on Cisco IOS XR Software Open Shortest Path First (OSPF) is an Interior Gate way Protocol (IGP) de v e loped by the OSPF working group of the Internet Engineering T ask Force (I ETF). Designed expressl y for IP networks, OSPF supports IP subnetting and tagging of externally de ri v e[...]

Implementing OSPF on Cisco IOS XR Software Contents RC-170 Cisco IOS XR Routing Configuratio n Guide Contents • Prerequisites for Implementing OSPF on Cisco I OS XR Software, page RC-170 • Information Ab out Implementing OSPF on Cisco IOS XR Software, page RC-17 0 • How to Implement OSPF on Cisco IOS XR Softw are, page RC-183 • Config urati[...]

Implementing OSPF on Cisco IO S XR Software Information About Implementing OSPF on Cisco IOS XR Software RC-171 Cisco IOS XR Routing Configuration Guide • Route Authentication Methods f or OSPF V e rsion 2, page RC-177 • Neighbors and Adja cency for OSPF , page RC-178 • Designated Router (DR) for OSPF , page RC-178 • Default Ro ute for OSPF[...]

Implementing OSPF on Cisco IOS XR Software Information About Im plementing OSPF on Cisco IOS XR Softw are RC-172 Cisco IOS XR Routing Configuratio n Guide The networking de vices running O SPF detect topological changes in the network, flood link-state updates to neighbors, and quickly con verge on a ne w view of the topology . Each OSPF router in [...]

Implementing OSPF on Cisco IO S XR Software Information About Implementing OSPF on Cisco IOS XR Software RC-173 Cisco IOS XR Routing Configuration Guide • Not-so-stubb y area (NSSA)—RFC 1587 is support ed. • OSPF ov er demand circuit—RFC 1793 is supported. Comparison of Cisco IOS XR OSPFv3 and OSPFv2 Much of the OSPFv3 protocol is the same [...]

Implementing OSPF on Cisco IOS XR Software Information About Im plementing OSPF on Cisco IOS XR Softw are RC-174 Cisco IOS XR Routing Configuratio n Guide Ti p Understanding hierarchical CLI and CLI inheritance sa ves you considerable conf iguration time. See the “Configuring Aut hentication at Dif ferent Hierarchi cal Lev els for OSPF V ersion 2[...]

Implementing OSPF on Cisco IO S XR Software Information About Implementing OSPF on Cisco IOS XR Software RC-175 Cisco IOS XR Routing Configuration Guide Areas Areas allo w the subdi vision of an autonom ous system into smaller , more manageable networks or sets of adjacent netw orks. As sho wn in Figure 10 , aut onomous syste m A consists o f three[...]

Implementing OSPF on Cisco IOS XR Software Information About Im plementing OSPF on Cisco IOS XR Softw are RC-176 Cisco IOS XR Routing Configuratio n Guide Routers The OSPF network is composed of AB Rs, ASBRs, and interior rout ers. Area Border Routers An area border routers (ABR) is a router with multiple interfaces t hat connect directly to netw o[...]

Implementing OSPF on Cisco IO S XR Software Information About Implementing OSPF on Cisco IOS XR Software RC-177 Cisco IOS XR Routing Configuration Guide • The primary IPv4 address of the interface speci fied b y the OSPF rou t er- id command. • The 32-bit numeric v alue specified b y the rou t er-i d command in global conf iguration mode. (This[...]

Implementing OSPF on Cisco IOS XR Software Information About Im plementing OSPF on Cisco IOS XR Softw are RC-178 Cisco IOS XR Routing Configuratio n Guide Authentication Strategies Authentication can be specif ied for an entire process or area, or on an i nterface or a virtual link. An interface or virtual li nk can be confi gured for only one type[...]

Implementing OSPF on Cisco IO S XR Software Information About Implementing OSPF on Cisco IOS XR Software RC-179 Cisco IOS XR Routing Configuration Guide Default Route for OSPF , T ype 5 (ASE) LSAs are generated and flooded to all ar eas except stub areas. F or the routers in a stub area to be able to route packets to destinations outs ide the stub [...]

Implementing OSPF on Cisco IOS XR Software Information About Im plementing OSPF on Cisco IOS XR Softw are RC-180 Cisco IOS XR Routing Configuratio n Guide • Interarea-pref ix LSA for ABRs (T ype 3)—Advertises in ternal networks to r outers in other areas (interarea routes). T ype 3 LSAs may represent a s ing le network or set of network s aggre[...]

Implementing OSPF on Cisco IO S XR Software Information About Implementing OSPF on Cisco IOS XR Software RC-181 Cisco IOS XR Routing Configuration Guide In the case in which an area cannot be co nnected to Area 0, you must conf igure a virtual link between that area and Area 0. The tw o endpoints of a virtual link are ABRs, and the virtual link mu [...]

Implementing OSPF on Cisco IOS XR Software Information About Im plementing OSPF on Cisco IOS XR Softw are RC-182 Cisco IOS XR Routing Configuratio n Guide The interv al at which the SPF calcul ations occur is chosen dynamically and based on t he frequency of topology changes i n the network. Th e chosen interv al is within the bo undary of the user[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-183 Cisco IOS XR Routing Configuration Guide through intelligent l ine cards while the standb y Route Processor (RP) assumes control from the f ailed RP . The abili ty of line cards to remain up through a f a ilov er and to be kept cu rrent with the Forw a[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-184 Cisco IOS XR Routing Configuratio n Guide • Controlling the Frequenc y that the Same LSA Is Originated or Ac cepted for OSPF , pa ge RC-197 (optiona l) • Creating a V irtual Link with MD5 Authentication t o Area 0 for OSPF , page RC-199 (optional) ?[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-185 Cisco IOS XR Routing Configuration Guide DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 router ospf process-name or router ospfv3 process-name Example: RP/0/[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-186 Cisco IOS XR Routing Configuratio n Guide Configuring Stub and Not-so-Stubby Area Types This task explains ho w to configure the stub area and the NSSA for OSPF . SUMMARY STEPS 1. conf igure 2. router ospf pr ocess-name or router ospfv3 pr ocess-name 3.[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-187 Cisco IOS XR Routing Configuration Guide 6. stub or nssa 7. default-cost cost 8. end or commit 9. Repeat this task on al l other routers in the stub area or N SSA. DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-188 Cisco IOS XR Routing Configuratio n Guide Step 5 stub [ no-summary ] or nssa [ no-redistribution ] [ default-information-originate ] [ no-summary ] Example: RP/0/RP0/CPU0:router(config-ospf-ar)# stub no summary or RP/0/RP0/CPU0:router(config-ospf-ar)# n[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-189 Cisco IOS XR Routing Configuration Guide Configuring Neighbors for Nonbroadcast Networks This task ex plains ho w to conf igure neighbors for a nonbroadcast netw ork. This task is optio nal. Prerequisites Config uring NBMA networks as eith er broadcast[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-190 Cisco IOS XR Routing Configuratio n Guide 9. neighbor ip-addr ess [ priority number ] [ poll-interval seconds ] [ cost number ] or neighbor ipv6-link-loca l-addr ess [ priority number ] [ poll-inter val seconds ] [ cost number ] [ database-f ilter [ all[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-191 Cisco IOS XR Routing Configuration Guide Step 5 network { broadcast | non-broadcast | { point-to-multipoint [ non-broadcast ] | point-to-point }} Example: RP/0/RP0/CPU0:router(config-ospf-ar)# network non-broadcast Configures the OSPF network type to a[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-192 Cisco IOS XR Routing Configuratio n Guide Step 9 neighbor ip-address [ priority number ] [ poll-interval seconds ][ cost number ] or neighbor ipv6-link-local-address [ priority number ] [ poll-interval seconds ][ cost number ] [ database-filter [ all ]][...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-193 Cisco IOS XR Routing Configuration Guide Step 13 neighbor ip-address [ priority number ] [ poll-interval seconds ][ cost number ] [ database-filter [ all ]] or neighbor ipv6-link-local-address [ priority number ] [ poll-interval seconds ][ cost number [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-194 Cisco IOS XR Routing Configuratio n Guide Configuring Authentication at Different Hierarchical Levels for OSPF Version 2 This task explains ho w to config ure MD5 (secure) authenticati on on the OSPF router process, configure one area with plain text au[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-195 Cisco IOS XR Routing Configuration Guide 5. message-digest-key key-id md5 { key | clear key | encrypted ke y } 6. area ar ea-id 7. interface type instance 8. Repeat Step 7 for each interface that must communicate, using the same authentication. 9. exit[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-196 Cisco IOS XR Routing Configuratio n Guide Step 6 area area-id Example: RP/0/RP0/CPU0:router(config-ospf)# area 0 Enters area conf iguration mode and configures a backbone area for the OSPF process. Step 7 interface type instance Example: RP/0/RP0/CPU0:r[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-197 Cisco IOS XR Routing Configuration Guide Controlling the Frequency that the Same LSA Is Originated or Accepted for OSPF This task ex plains ho w to tune the con ver gence time of OSPF routes in the routing table when many LSAs need to be flooded in a v[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-198 Cisco IOS XR Routing Configuratio n Guide 8. end or commit DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 router ospf process-name or router ospfv3 process-na[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-199 Cisco IOS XR Routing Configuration Guide Creating a Virtual Link with MD5 Authentication to Area 0 for OSPF This task e xplains ho w to create a virtual link to your backbone (area 0) and ap ply MD5 authenticatio n. Y ou must perform the steps describe[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-200 Cisco IOS XR Routing Configuratio n Guide • For a virtual link to be successful, you need a stable router ID at each end of the virtual link. Y ou do not want them to be subject to chan ge, which could happen if the y are assigned by default (See the [...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-201 Cisco IOS XR Routing Configuration Guide DETAILED ST EPS Command or Action Purpose Step 1 show ospf [ process-name ] or show ospfv3 [ process-name ] Example: RP/0/RP0/CPU0:router# show ospf or RP/0/RP0/CPU0:router# show ospfv3 (Optional) Displays gene [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-202 Cisco IOS XR Routing Configuratio n Guide Step 8 message-digest-key key-id md5 { key | clear key | encrypted key } Example: RP/0/RP0/CPU0:router(config-ospf-ar-vl)# message-digest-key 4 md5 yourkey Defines an OSPF virtual link. • See the “V irtual L[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-203 Cisco IOS XR Routing Configuration Guide Examples In the follo wing example, th e show ospfv3 virtual li nks EXEC command verif i es that the OSPF_VL0 virtual link to the OSPFv3 neighbor is up, the ID of the virtual link interface is 2, and the IPv6 ad[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-204 Cisco IOS XR Routing Configuratio n Guide 7. end or commit DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 router ospf process-name or router ospfv3 process-na[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-205 Cisco IOS XR Routing Configuration Guide Redistributing Routes from One IGP into OSPF This task redistrib utes routes from an IGP (c ould be a dif ferent OSPF process) into OSPF . Prerequisites For information about conf igur ing routing p olicy , see [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-206 Cisco IOS XR Routing Configuratio n Guide 5. summary-pref ix addr ess mask [ not-adv ertise ] [ tag ta g ] or summary-pref ix ipv6-pr e f ix / pr efix-len gth [ not-advertise ] [ t ag tag ] 6. end or commit DETAILED ST EPS Command or Action Purpose Step[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-207 Cisco IOS XR Routing Configuration Guide Step 4 redistribute protocol [ process-id ] { level-1 | level-1-2 | level-2 } [ metric metric-value ] [ metric-type type-value ] [ match { internal | external [ 1 | 2 } | nssa-external [ 1 | 2 }] [ tag tag-value[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-208 Cisco IOS XR Routing Configuratio n Guide Step 5 summary-prefix address mask [ not-advertise ] [ tag tag ] or summary-prefix ipv6-prefix / prefix-length [ not-advertise ] [ tag tag ] Example: RP/0/RP0/CPU0:router(config-ospf)# summary-prefix 10.1.0.0 25[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-209 Cisco IOS XR Routing Configuration Guide Configuring OSPF Shortest Path First Throttling This task explains ho w to configure SPF schedulin g in mill isecond interv als and potentially delay SPF calculations during times of network instabil ity . This [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-210 Cisco IOS XR Routing Configuratio n Guide Step 3 router-id { ipv4-address | interface-type interface-instance } Example: RP/0/RP0/CPU0:router(config-ospf)# router-id 192.168.4.3 Configures a r outer ID for the OSPF pr ocess. Note W e recommend using a s[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-211 Cisco IOS XR Routing Configuration Guide Examples In the follo wing example, the show ospf EXEC command is used to verify t hat the initial SPF schedule delay time, minimum hold time, and maximu m wait time are conf igured correctly . Additional detai [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-212 Cisco IOS XR Routing Configuratio n Guide Non-Stop Forwarding enabled Note For a description of each o utput display f ield, see the show ospf command in the OSPF Comma nds on Cisco IOS XR Softwar e module in the Cisco IOS XR Routing Command Refer ence [...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-213 Cisco IOS XR Routing Configuration Guide DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 router ospf process-name Example: RP/0/RP0/CPU0:router(config)# route[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-214 Cisco IOS XR Routing Configuratio n Guide Configuring OSPF Version 2 for MPLS Traffic Engineering This task explains ho w to configure OSPF for MPLS TE. This task is opt ional. For a descript ion of the MPLS TE tasks and commands that allo w you to conf[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-215 Cisco IOS XR Routing Configuration Guide Restrictions MPLS traff ic engineering currently supports only a single OSPF area. SUMMARY STEPS 1. conf igure 2. router ospf pr ocess-name 3. rou t er- id { ipv4-ad dr e ss | interface -type inte rface-insta nc[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-216 Cisco IOS XR Routing Configuratio n Guide Step 5 mpls traffic-eng router-id { ip-address | interface-type interface-instance } Example: RP/0/RP0/CPU0:router(config-ospf)# mpls traffic-eng router-id loopback 0 (Optiona l) Specifies that th e traffic engi[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-217 Cisco IOS XR Routing Configuration Guide Examples This section pro v ides the follo wing output examples: • Sample Output for the sho w ospf Command Before Configuri ng MPLS TE, page RC-217 • Sample Outpu t for the show ospf mpls traff ic-eng Comma[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-218 Cisco IOS XR Routing Configuratio n Guide Sample Output for the show ospf mpls traffic-eng Command In the following e xample, the show ospf mpls traffic-eng EXEC command v erifies that the MPLS TE fragments are configured correctly: RP/0/RP0/CPU0:router[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-219 Cisco IOS XR Routing Configuration Guide Priority 0 : 3125000 Priority 1 : 3125000 Priority 2 : 3125000 Priority 3 : 3125000 Priority 4 : 3125000 Priority 5 : 3125000 Priority 6 : 3125000 Priority 7 : 3125000 Affinity Bit :0 Sample Output for the show [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-220 Cisco IOS XR Routing Configuratio n Guide DETAILED ST EPS Command or Action Purpose Step 1 show ospf [ process-name ] Example: RP/0/RP0/CPU0:router# show ospf group1 (Optional) Displays gene ral information about OSPF routing processes. Step 2 show ospf[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-221 Cisco IOS XR Routing Configuration Guide Configuring OSPFv3 Graceful Restart This section describes the follo wing tasks for conf iguring a graceful restar t of an OSPFv3 process: • Enabling Graceful Restart, page RC-221 • Config uring the Maximum [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-222 Cisco IOS XR Routing Configuratio n Guide SUMMARY STEPS 1. conf iguration 2. router ospfv3 3. graceful-r estart lifetime DETAILED ST EPS Configuring the Minimum Time Required Between Restarts This section descri bes the task of modifying the mi nimal ti[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-223 Cisco IOS XR Routing Configuration Guide DETAILED ST EPS Configuring the Helper Level of the Router This section describes the task o f disabling the helper mode on the current router . By default, a router that is capable of doing an OSPFv3 gr aceful [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-224 Cisco IOS XR Routing Configuratio n Guide DETAILED ST EPS Displaying Information About Graceful Restart This section describes the tasks you can use to display information ab out a graceful restart. • T o see if the feature is e nabled and when the la[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-225 Cisco IOS XR Routing Configuration Guide Displaying Graceful Restart Information for an OSPFv3 Instance The follo wing screen output sh o ws the link state for the instance of OSPFv3 called test : RP/0/0/CPU0:LA# show ospfv3 test database grace OSPFv3 [...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-226 Cisco IOS XR Routing Configuratio n Guide Step 3 mpls traffic-eng multicast-intact Example: RP/0/RP0/CPU0:router(config-isis)# mpls traffic-eng multicast-intact Enables multicast-intact. Step 4 end or commit Example: RP/0/RP0/CPU0:router(config-isis-af)[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-227 Cisco IOS XR Routing Configuration Guide Configuring the Multi-VRF Capability for OSPF Routing This task explains ho w to configure multi-VRF capabil ity for OSPF Routing. This task is implemented for OSPFv2 only . SUMMARY STEPS 1. conf igure 2. router[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-228 Cisco IOS XR Routing Configuratio n Guide Associating Interfaces to a VRF This task explains ho w to a ssociate an interface with a VPN R outing and Forw arding (VRF) instance. SUMMARY STEPS 1. conf igure 2. router ospf pr ocess-name 3. vrf vrf-name 4. [...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-229 Cisco IOS XR Routing Configuration Guide 8. end or commit DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 router ospf process-name Example: RP/0/RP0/CPU0:rout[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-230 Cisco IOS XR Routing Configuratio n Guide Configuring OSPF as a Provider Edge to Customer Edge (PE-CE) Protocol SUMMARY STEPS 1. conf igure 2. router ospf pr ocess-name 3. vrf vrf-name 4. rou t er- id { r o uter-id | interface-type interface-instance } [...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-231 Cisco IOS XR Routing Configuration Guide 11. disable-dn-bit-check 12. end or commit DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 router ospf process-name E[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-232 Cisco IOS XR Routing Configuratio n Guide Step 6 area area-id Example: RP/0/RP0/CPU0:router(config-ospf-vrf)# area 0 Enters area configuration mode and conf igures an area for the OSPF process. • The ar ea -id argument can be entered in dott ed-decima[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-233 Cisco IOS XR Routing Configuration Guide Configuring LDP-IGP Synchronization This task expl ains ho w to synchronize Label Distribution Pr otocol (LDP) with Interior Gat ew ay Protocol (IGP) on an OSPF interface. SUMMARY STEPS 1. conf igure 2. router o[...]

Implementing OSPF on Cisco IOS XR Software How to Implement OSPF on Cisco IOS XR Software RC-234 Cisco IOS XR Routing Configuratio n Guide DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 router ospf process-name Example: RP/0/RP0/CPU0:router(config)# route[...]

Implementing OSPF on Cisco IO S XR Software How to Implement OSPF on Cisco IOS XR Software RC-235 Cisco IOS XR Routing Configuration Guide Creating Multiple OSPF Instances (OSPF Process and a VRF) This task e xplains ho w to create multiple OSPF inst ances. In this case, the in stances are a normal OSPF instance and a VRF instance. SUMMARY STEPS 1.[...]

Implementing OSPF on Cisco IOS XR Software Configuration Examples for Implementing OSPF on Cisco IOS XR Softwa re RC-236 Cisco IOS XR Routing Configuratio n Guide Configuration Examples for Implementing OSPF on Cisco IOS XR Software This section pro v ides the follo wing configurat ion examp les: • Cisco IOS XR for OSPF V ersion 2 Conf iguration:[...]

Implementing OSPF on Cisco IO S XR Software Configuration Examples fo r Implementing OSPF on Cisco IOS XR Software RC-237 Cisco IOS XR Routing Configuration Guide • CLI Inheritance and Precedence for OSPF V ersion 2: Example, page RC-238 • MPLS TE for OSPF V e rsion 2: Example, page RC-239 • ABR with Summarization for OSPFv3: Example, page RC[...]

Implementing OSPF on Cisco IOS XR Software Configuration Examples for Implementing OSPF on Cisco IOS XR Softwa re RC-238 Cisco IOS XR Routing Configuratio n Guide In Cisco IOS XR software, OSPF areas must be e xplicitly configured, and interf aces conf igured under the area conf iguration mode are e x plicitly bound t o that area. In this ex ample,[...]

Implementing OSPF on Cisco IO S XR Software Configuration Examples fo r Implementing OSPF on Cisco IOS XR Software RC-239 Cisco IOS XR Routing Configuration Guide ! ! area 4 interface POS 0/1/0/2 cost 20 ! interface POS 0/2/0/2 ! interface POS 0/3/0/2 ! ! area 6 cost 30 interface POS 0/1/0/3 ! interface POS 0/2/0/3 ! interface POS 0/3/0/3 cost 1 ! [...]

Implementing OSPF on Cisco IOS XR Software Configuration Examples for Implementing OSPF on Cisco IOS XR Softwa re RC-240 Cisco IOS XR Routing Configuratio n Guide ABR Stub Area for OSPFv3: Example The follo wing example sho ws that area 1 is configured as a stub area: router ospfv3 1 router-id 10.0.0.217 area 0 interface POS 0/2/0/1 area 1 stub int[...]

Implementing OSPF on Cisco IO S XR Software Where to Go Next RC-241 Cisco IOS XR Routing Configuration Guide interface POS 0/2/0/1 area 1 virtual-link 10.0.0.212 interface POS 0/2/0/0 ABR 2 Configuration router ospfv3 1 router-id 10.0.0.212 area 0 interface POS 0/3/0/1 area 1 virtual-link 10.0.0.217 interface POS 0/2/0/0 Virtual Link Configured wit[...]

Implementing OSPF on Cisco IOS XR Software Where to Go Ne xt RC-242 Cisco IOS XR Routing Configuratio n Guide T o build an MPLS TE topology , create tunnels, and configure forwarding o ver the tunnel for OSPF V ersion 2; see the Cisco IOS XR MPLS Confi guration Guide .[...]

Implementing OSPF on Cisco IO S XR Software Additional References RC-243 Cisco IOS XR Routing Configuration Guide Additional References The follo wing sections pro vide references relate d to implementing OSPF on Cisco IOS XR software. Related Documents Standards MIBs RFCs Related T opic Document T itle OSPF and OSPFv3 commands: complete command sy[...]

Implementing OSPF on Cisco IOS XR Software Additional References RC-244 Cisco IOS XR Routing Configuratio n Guide Technical Assistance Description Link The Cisco T echnical Support website contains thousands of pa ges of sear chable technical content, including lin ks to products, technologies, so lutions, technical tips, and tools. Registered Cisc[...]