Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 1157
Open Shortest Path First (OSPFv2 and OSPFv3), OSPFv2 Commands, area default-cost
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39 Open Shortest Path First (OSPFv2 and OSPFv3) Open Shortest Path First (OSPF) is an Interior Gateway Protocol (IGP), which means that it distributes routing information between routers in a single Autonomous System (AS). OSPF is also a link-state protocol in which all routers contain forwarding tables derived from information about their links to their neighbors. The fundamental mechanisms of OSPF (flooding, DR election, area support, SPF calculations, and so on) are the same for OSPFv2 and OSPFv3. OSPFv3 runs on a per-link basis instead of on a per-IP-subnet basis. On Tunnel interfaces, OSPFv2 is supported on IPv6 tunnels only and OSPFv3 is supported on IPv4 tunnels only. This chapter is divided into two sections. There is no overlap between the two sets of commands. You cannot use an OSPFv2 command in the IPv6 OSPFv3 mode. ● OSPFv2 Commands ● OSPFv3 Commands OSPF on Tunnel Interfaces: NOTE: The Dell Networking OS versions 9.4(0.0) and 9.7(0.0) introduce support for VRF on OSPFv2 and OSPFv3, respectively. The multi-process OSPF feature supported on Dell Networking OS version 7.8.1.0 is modified. In earlier versions, multiple OSPF processes were created without VRF (prior to 9.4 release). In Dell Networking OS version 9.4 and version 9.7 (for OSPFv3), multiple OSPF processes can be created on a router, but with only one OSPF process per VRF. However, there can be one OSFPv2 and one OSPFv3 on the same VRF. Topics: • OSPFv2 Commands • OSPFv3 Commands OSPFv2 Commands The Dell Networking implementation of OSPFv2 is based on IETF RFC 2328. . area default-cost Set the metric for the summary default route the area border router (ABR) generates into the stub area. Use this command on the border routers at the edge of a stub area. C9000 Series Syntax Parameters Defaults area area-id default-cost cost To return default values, use the no area area-id default-cost command. area-id cost Specify the OSPF area in dotted decimal format (A.B.C.D.) or enter a number from zero (0) to 65535. Specifies the stub area's advertised external route metric. The range is from zero (0) to 65535. cost = 1; no areas are configured. Open Shortest Path First (OSPFv2 and OSPFv3) 1157
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