VTP

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if not configured, client will use domain from first received update

Configuration

config# vtp domain WORD
config# vtp password WORD (md5)
config# vtp mode [server|client|transparent]
config# vtp version [1|2] (version2 transparent modes will still forward version 1 updates)
config# vtp pruning (prevents flooding to switches that dont have any ports in the vlan)
config# vtp interface (ip address to identify the switch in it's updates)

Ranges

Normal

1-1005 (1,1002-1005 are reserved and cannot be pruned by vtp)

Extended

1006-4094 (no vlan.dat; no vtp; no database configuration mode; stored in running-conf)