Dell Command Line Reference Guide for the S4048–ON System 9.14.2.4

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show ip ospf asbr

Display all autonomous system boundary router (ASBR) routers visible to OSPF.

S4048–ON

Syntax
show ip ospf [process-id | vrf vrf-name] asbr
Parameters
process-id
Enter the OSPF Process ID to show a specific process. If no Process ID is entered, command applies only to the first OSPF process.
Defaults
None
Command Modes
  • EXEC
  • EXEC Privilege
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.10(0.0)
Introduced on the S6100-ON.
9.8(2.0)
Introduced on the S3100 series.
9.8(1.0)
Introduced on the Z9100-ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.7(0.0)
Introduced on the S6000-ON.
9.4.(0.0)
Added support for VRF.
9.2(1.0)
Introduced on the Z9500.
9.0.2.0
Introduced on the S6000.
8.3.19.0
Introduced on the S4820T.
8.3.11.1
Introduced on the Z9000.
8.3.7.0
Introduced on the S4810.
7.8.1.0
Added support of Multi-Process OSPF.
7.8.1.0
Added the process-id option, in support of Multi-Process OSPF.
7.6.1.0
Introduced on the S-Series.
7.5.1.0
Introduced on the C-Series and E-Series.
Usage Information
To isolate problems with external routes, use this command. In OSPF, external routes are calculated by adding the LSA cost to the cost of reaching the ASBR router. If an external route does not have the correct cost, use this command to determine if the path to the originating router is correct. The display output is not sorted in any order.
NOTE: ASBRs that are not in directly connected areas are also displayed.

You can determine if an ASBR is in a directly connected area (or not) by the flags. For ASBRs in a directly connected area, E flags are set. In the following example, router 1.1.1.1 is in a directly connected area since the Flag is E/-/-/. For remote ASBRs, the E flag is clear (-/-/-/).

Example
DellEMC# show ip ospf 1asbr

RouterID  Flags   Cost Nexthop   Interface Area
3.3.3.3   -/-/-/  2   10.0.0.2   Te 1/1    1
1.1.1.1   E/-/-/  0   0.0.0.0    -         0
DellEMC#

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