Cisco Cisco IOS Software Release 12.4(15)T

© 2007 Cisco Systems, Inc. All rights reserved.

The GLBP client cache contains information about network hosts that are using a GLBP group as the 
default gateway.

When an IPv4 ARP request or an IPv6 Neighbor Discovery (ND) request for a GLBP virtual IP address 
is received from a network host by a GLBP group’s Active Virtual Gateway (AVG), a new entry is created 
in the GLBP client cache. The cache entry contains information about the host that sent the ARP or ND 
request and which forwarder the AVG has assigned to it.

The GLBP client cache stores the MAC address of each host that is using a particular GLBP group, the 
number of the GLBP forwarder that each network host has been assigned to and the total number of 
network hosts currently assigned to each forwarder in a GLBP group. The GLBP client cache also stores 
the protocol address used by each network host and the time elapsed since the host-to-forwarder 
assignment was last updated.

You can display the contents of the GLBP client cache using the show glbp detail command.

Configuration information is included in the “Configuring GLBP” module of the Cisco IOS IP 
Application Services Configuration Guide, Release 12.4T

at the following URL:

The following sections provide information about this feature:

GLBP Client Cache

Customizing GLBP

For a complete list of features included in the “Configuring GLBP” module, see the Feature Information 
Table located toward the end of the module.