Reference Guide

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Open Shortest Path First (OSPFv2 and OSPFv3)
Open Shortest Path First version 2 for IPv4 is supported on Z9000 Dell Networking platform. Open Shortest Path First
version 3 (OSPFv3) for IPv6 is supported on the Z9000 platform.
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.
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
NOTE: FTOS version 7.8.1.0 introduces Multi-Process OSPF on IPv4 (OSPFv2) only. It is not supported on OSPFv3
(IPv6).
The CLI requires that you include the Process ID when entering ROUTER-OSPF mode. Each command entered
applies to the specified OSPFv2 process only.
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.
Z9000
Syntax
area area-id default-cost cost
To return default values, use the no area area-id default-cost command.
Parameters
area-id Specify the OSPF area in dotted decimal format (A.B.C.D.) or enter a
number from zero (0) to 65535.
cost Specifies the stub area’s advertised external route metric. The range
is from zero (0) to 65535.
Defaults cost = 1; no areas are configured.
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