Troubleshooting Ip Unnumbered Interface - Cisco Catalyst 4500 Series Software Configuration Manual

Troubleshooting IP Unnumbered Interface

Troubleshooting IP Unnumbered Interface
To understand how to debug connect host polling, see the Cisco IOS documentation of the debug arp
command on cisco.com.
When an IP unnumbered interface shares the IP address of a loopback interface whose prefix is
advertised in an OSPF network, you must modify the loopback interface as a point-to-point interface.
Otherwise, only the loopback interface host route is advertised to an OSPF neighbor.
Switch(config)# int loopback 0
Switch(config-if)# ip address
Switch(config-if)# ip address 10.1.0.1 255.255.0.0
Switch(config-if)# ip ospf network point-to-point
Switch(config-if)# end
Related Documents
Related Topic
DHCP and other IP addressing configuration tasks
DHCP and other IP addressing commands
VLAN configuration tasks
VLAN configuration commands
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
18-8
Document Title
"IP Addressing and Services" section of the Cisco IOS IP
Addressing Services Configuration Guide, Release 12.4
Cisco IOS IP Addressing Services Command Reference,
Release 12.4 T
"Virtual LANs" chapter of the Cisco IOS LAN Switching
Configuration Guide, Release 12.4
Cisco IOS LAN Switching Command Reference, Release 12.4 T
Chapter 18 Configuring IP Unnumbered Interface