OSPF Commands

To create or modify a routing configuration file, you must use the correct routing commands. The subsequent table is a catalog of supported routing commands for OSPF. The sections must appear in the configuration file in the same order they appear in this table. You can also use the sample text found in the Sample OSPF Routing Configuration File.

Section Command Description

Configure Interface

  interface eth[N] Begin section to set properties for interface
  ip ospf authentication-key [PASSWORD] Set OSPF authentication password
  ip ospf message-digest-key [KEY-ID] md5 [KEY] Set MD5 authentication key ID and key
  ip ospf cost [1-65535] Set link cost for the interface (see OSP Interface Cost table below)
  ip ospf hello-interval [1-65535] Set interval to send hello packets; default is 10 seconds
  ip ospf dead-interval [1-65535] Set interval after last hello from a neighbor before declaring it down; default is 40 seconds
  ip ospf retransmit-interval [1-65535] Set interval between link-state advertisements (LSA) retransmissions; default is 5 seconds
  ip ospf transmit-delay [1-3600] Set time required to send LSA update; default is 1 second
  ip ospf priority [0-255] Set route priority; high value increases eligibility to become the designated router (DR)
Configure OSPF Routing Daemon
 

router ospf

Enable OSPF daemon
  ospf router-id [A.B.C.D] set router ID for OSPF manually; router determines its own ID if not set
  ospf rfc1583compatibility Enable RFC 1583 compatibility (can lead to route loops)
  ospf abr-type [cisco|ibm|shortcut|standard] More information about this command can be found in draft-ietf-abr-o5.txt
  passive-interface eth[N] Disable OSPF announcement on interface eth[N]
  auto-cost reference-bandwidth[0-429495] Set global cost (see OSPF cost table below); do not use with "ip ospf [COST]" command
  timers spf [0-4294967295][0-4294967295] Set OSPF schedule delay and hold time
Enable OSPF on a Network
*The "area" variable can be typed in two formats: [W.X.Y.Z]; or as an integer [Z].  
  network [A.B.C.D/M] area [Z]

Announce OSPF on network

A.B.C.D/M for area 0.0.0.Z

Configure Properties for Backbone area or Other Areas
The "area" variable can be typed in two formats: [W.X.Y.Z]; or as an integer [Z].
  area [Z] range [A.B.C.D/M] Create area 0.0.0.Z and set a classful network for the area (range and interface network and mask setting should match)
  area [Z] virtual-link [W.X.Y.Z] Set virtual link neighbor for area 0.0.0.Z
  area [Z] stub Set area 0.0.0.Z as a stub
  area [Z] stub no-summary  
  area [Z] authentication Enable simple password authentication for area 0.0.0.Z
  area [Z] authentication message-digest Enable MD5 authentication for area 0.0.0.Z
Redistribute OSPF Routes
  default-information originate Share route of last resort (default route) with OSPF
  default-information originate metric [0-16777214] Share route of last resort (default route) with OSPF, and add a metric used to generate the default route
  default-information originate always Always share the route of last resort (default route)
  default-information originate always metric [0-16777214] Always share the route of last resort (default route), and add a metric used to generate the default route
  redistribute static Redistribute firewall static routes to OSPF
  redistribute connected Redistribute routes from all interfaces to OSPF
  redistribute connected metrics

Redistribute routes from all interfaces to OSPF, and a metric used for the action

Configure Route Redistribution with Access Lists and Route Maps
  access-list [LISTNAME] permit [A.B.C.D/M] Create an access list to allow distribution of A.B.C.D/M
  access-lists [LISTNAME] deny any Restrict distribution of any route map not specified above
  route-map [MAPNAME] permit [N] Create a route map with name [MAPNAME] and allow with a priority of [N]
  match ip address [LISTNAME]

 

See Also

About Open Shortest Path First (OSPF and OSPFv3) Protocol

Configure Fireware Pro to use OSPF

OSPF Interface Cost Table

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