What is VTP?
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Answer Posted / anupam
VLAN Trunking Protocol (VTP) is a Cisco proprietary Layer 2
messaging protocol that manages the addition, deletion, and
renaming of Virtual Local Area Networks (VLAN) on a network-
wide basis. Cisco's VLAN Trunk Protocol reduces
administration in a switched network. When a new VLAN is
configured on one VTP server, the VLAN is distributed
through all switches in the domain. This reduces the need
to configure the same VLAN everywhere. To do this, VTP
carries VLAN information to all the switches in a VTP
domain. VTP advertisements can be sent over ISL, 802.1q,
IEEE 802.10 and LANE trunks. VTP traffic is sent over the
management VLAN (VLAN1), so all VLAN trunks must be
configured to pass VLAN1. VTP is available on most of the
Cisco Catalyst Family products.[1]
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