Cisco OSPF Command and Configuration Handbook (paperback)

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20-4 show ip ospf process-id border-routers

Syntax Description:

  • process-id ” The OSPF process ID. Range of values is 1 to 4,294,967,295.

Purpose: To display the OSPF routing table entries to ABRs and ASBRs. The output of this command can be filtered, using regular expressions, by one of the following forms:

show ip ospf border-routers begin regular-expression show ip ospf border-routers exclude regular-expression show ip ospf border-routers include regular-expression

Initial Cisco IOS Software Release: 10.0

Example: Displaying OSPF Border Router Information

The following is a representative output from the show ip ospf border-routers EXEC command.

r6# show ip ospf border-routers OSPF Process 1 internal Routing Table Codes: i - Intra-area route, I - Inter-area route I 4.4.4.4 [122] via 10.1.1.18, Serial0/1, ASBR, Area 7, SPF 5 i 1.1.1.1 [48] via 10.1.1.18, Serial0/1, ABR, Area 7, SPF 5

Table 20-2 provides an explanation for the highlighted line in the preceding output.

Table 20-2. Significant Output from the show ip ospf border-routers Command

Field Description
I Indicates the type of route to the ABR or ASBR. Possible values are I for an inter-area route and i for an intra-area route.
4.4.4.4 Indicates the router ID of the ABR or ASBR.
[122] Indicates the OSPF cost of the route to the ABR or ASBR.
via 10.1.1.18 Indicates the next hop toward the ABR or ASBR.
Serial0/1 Indicates the interface used to reach the next hop.
ASBR Indicates the border router type (ABR or ASBR).
Area 7 Indicates the area from which the route to the border router was learned.
SPF 5 The number of the SPF calculations that calculated this route.
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