Users Guide

show ip ospf topology
Displays routers that directly connect to OSPF areas.
Syntax
show ip ospf [process-id] [vrf vrf-name] topology
Parameters
● process-id — (Optional) Displays OSPF process information. If you do not enter a process ID, this
applies only to the first OSPF process.
● vrf vrf-name — (Optional) Displays the routers in the directly connected OSPF areas in the
configured VRF.
Default Not configured
Command Mode EXEC
Usage
Information
The “E” flag output indicates the router listed is an ASBR. The “B” flag indicates that the router listed is
an ABR. If the Flag field shows both E and B, it indicates that the listed router is both an ASBR and an
ABR.
Example
OS10# show ip ospf 10 topology
Router ID Flags Cost Nexthop Interface Area
111.111.111.1 -/B/-/ 1 111.1.1.2 Vl 3051 0
111.111.111.2 -/B/-/ 1 111.2.1.2 Vl 3053 0
112.2.1.1 E/-/-/ 1 110.1.1.2 Vl 3050 0
112.112.112.1 -/B/-/ 2 110.1.1.2 Vl 3050 0
112.112.112.2 -/B/-/ 2 110.1.1.2 Vl 3050 0
Supported
Releases
10.2.0E or later
summary-address
Configures a summary address for an ASBR to advertise one external route as an aggregate for all redistributed routes covered
by a specified address range.
Syntax
summary-address ip-address/mask [not-advertise | tag tag-value]
Parameters
● ip-address/mask—Enter the IP address to summarize along with the mask.
● not-advertise—(Optional) Suppresses IP addresses that do not match the network prefix/mask.
● tag-value—(Optional) Enter a value to match the routes redistributed through a route map, from 1
to 65535.
Default) Not configured
Command Mode ROUTER-OSPF
Usage
Information
The no version of this command disables the summary address.
Example
OS10(config)# router ospf 100
OS10(config-router-ospf-100)# summary-address 10.0.0.0/8 not-advertise
Supported
Releases
10.3.0E or later
timers lsa arrival
Configures the LSA acceptance intervals.
Syntax
timers lsa arrival arrival-time
Parameters arrival-time — Set the interval between receiving the LSA in milliseconds, from 0 to 600,000.
Default 1000 milliseconds
962 Layer 3