Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 676

www.dell.com | support.dell.com Step 4 Command Syntax Command Mode Usage area area-id stub [no-summary] CONFIG-ROUTER-OSPF-id Configure the area as a stub area. Use the no-summary keywords to prevent transmission in to the area of summary ASBR LSAs. Area ID is the number or IP address assigned when creating the Area . Use the show ip ospf database process-id database-summary command syntax in the EXEC Privilege mode To view which LSAs are transmitted. FTOS#show ip ospf 34 database database-summary OSPF Router with ID (10.1.2.100) (Process ID 34) Area ID 2.2.2.2 3.3.3.3 FTOS# Router 1 1 Network S-Net 0 0 0 0 S-ASBR Type-7 0 0 0 0 Subtotal 1 1 To view information on areas, use the show ip ospf process-id command in the EXEC Privilege mode. Configure OSPF Stub-Router Advertisement e Configure OSPF Stub-Router Advertisement is supported only on platform: x When you bring a new router onto an OSPF network, you can configure the router to function as a stub area by globally reconfiguring the OSPF link cost so that other routers do not use a path that forwards traffic destined to other networks through the new router for a specified time until the router's switching and routing functions are up and running, and the routing tables in network routers have converged. By using the max-metric router-lsa command, you force the link cost of all OSPF non-stub links to the maximum link cost (65535) for a specified time. The advertisement of this maximum metric causes other routers to assign a cost to the new router that is higher than the cost of using an alternate path. Because of the high cost assigned to paths that pass through the new router, other routers will not use a path through the new router as a transit path to forward traffic to other networks. Use the max-metric router-lsa command to gracefully shut down or reload a router without dropping packets destined for other networks. Command Syntax Command Mode Usage max-metric router-lsa [on-startup {announce-time | wait-for-bgp [wait-time]}] ROUTER OSPF E-Series ExaScale only: Configure the maximum cost of 65535 on a new router so that it always functions as a stub router in the network and OSPF traffic destined to other networks is not routed on paths which pass through the router. on-startup announce-time specifies the time (in seconds) following boot-up during which the maximum cost (65535) for transmitting OSPF traffic on router interfaces is announced in LSAs and the router functions as a stub router. Range: 5 to 86400 seconds. on-startup wait-for-bgp [wait-time] enables the router to announce the maximum metric in OSPF LSAs until the BGP routing table converges with updated routes. Default: 600 seconds. You can also specify the time (in seconds) that the router waits for the BGP routing table to converge before it stops advertising the maximum cost in LSAs and advertises the router's currently configured OSPF cost. Range: 5 to 86400 seconds. 676 | Open Shortest Path First (OSPFv2 and OSPFv3)