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21 Interswitch Protocols

This chapter describes Interswitch Protocols, which are used to discover adjacent switches,
and track VLAN membership and retain mobile group information across switches. They
include two new protocols and one existing protocol that is updated for release 4.0:
Mapping Adjacency Protocol (XMAP), a new protocol used to discover the topology of
Omni Switch/Routers (Omni S/Rs)
Group Mobility Advertisement Protocol (GMAP), a new protocol used to retain learned
mobile group and protocol information
VLAN Advertisement Protocol (VAP), an existing interswitch protocol used to exchange
VLAN information between switches
The protocols are independent of each other and perform separate functions. Each protocol is
described in detail in separate sections of this chapter.

Interswitch Protocol Commands

There is an Interswitch Protocol (XIP) submenu. Select XIP from the AutoTracker submenu,
and the submenu displays as follows:
Command XIP Menu
--------------- -----------------------------------------------------------------------
gmapst Turn Group Mobility Advertisement Protocol (GMAP) ON or OFF
gmapgaptime Set GMAP inter-message gap time in milliseconds
gmapholdtime Set GMAP hold time interval time in minutes
gmapupdttime Set GMAP update interval time in seconds
vlap Turn VLAN Advertisement Protocol (VAP) ON or OFF
xmapst Turn the Xylan Mapping Adjacency Protocol (XMAP) ON or OFF
xmapls List adjacent switches found using the XMAP protocol
xmapdisctime Set XMAP message interval for discovery phase in seconds
xmapcmntime Set XMAP message interval for common phase in seconds
Main File Summary VLAN Networking
Interface Security System Services Help
These commands are described in this chapter.