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NETW206 Ch 04

VLAN Trunking Protocol (VTP)

QuestionAnswer
MD5 Digest Message digest 5 is an algorithm used for message authentication in SNMPv2 and several other network protocols. It verifies the integrity of the communication, authenticates the origin, and checks for timeliness.
Request Advertisements Sent if the VTP domain has changed, subset advertisement msg is missed, the switch is reset, or receives a summary advertisement w/ a higher config revision.
Subset Advertisement Contains VLAN information. Version, Code, Sequence #, Domain Name Length, Management Domain Name, Configuration Revision #, & VLAN-info fields.
Summary Advertisements Contains the VTP domain, current revision #, and other VTP configuration details. Constitutes the majority of VTP advertisement traffic. Sent every 5 mins or immediately after a configuration has been made.
VLAN Trunking Protocol (VTP) Cisco proprietary Layer 2 protocol that enables a network manager to configure a single switch so that is propagates VLAN config info to other switches on the network, as well as synchronize the info with the switches in the VTP domain.
VTP Advertisements messages transmitted between Catalyst switches to share & synchronize VLAN configuration details in the switched LAN.
VTP Client Are not permitted to create, change, or delete VLANs. It stores VLAN info for the VTP domain only while the switch is on, a reset or power down deletes the VLAN information. A switch must be manually config'd to change mode from VTP server to VTP client.
VTP Configuration Revision Number A number that indicates the current stat of the VLAN info on the switch. The number enables the synchronization of VLAN information within the VTP domain.
VTP Domain A set of Catalyst switches with the same VTP domain name.
VTP Modes There are 3 modes, Server, Client, & Transparent. The operating mode determines how the switch uses and shares VLAN information.
VTP Password A VTP password must match on all switches in a VTP domain. The password secures the information in the VTP domain and prevents a rogue switch added to a network from compromising VLAN information.
VTP Pruning Prevents unnecessary transmission of VLAN info from one VLAN across all trunks in a VTP domain. Disabled by default.
VTP Server Advertises the VTP domain VLAN info to other VTP-enabled switches in the same VTP domain. They store the VLAN info for the entire domain in NVRAM.
VTP Transparent This mode forwards VTP advertisements to VTP clients and VTP servers, but does not originate or otherwise process VTP advertisements. VLANS that are created, renamed, or deleted on a VTP transparent mode switch are local to that switch only.
VTP Version VTP has 3 versions: v1, v2, & v3. Catalyst 2960 & 3560 switches support versions 1 & 2.
Created by: AZ4ME
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