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vtp (VLAN configuration)
Follow these guidelines when configuring a VTP domain name:
The switch is in the no-management-domain state until you configure a domain name. While in the
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no-management-domain state, the switch does not send any VTP advertisements even if changes
occur to the local VLAN configuration. The switch leaves the no-management-domain state after
receiving the first VTP summary packet on any port that is currently trunking or after configuring a
domain name with the vtp domain command. If the switch receives its domain from a summary
packet, it resets its configuration revision number to zero. After the switch leaves the
no-management-domain state, it can never be configured to reenter it until you clear the NVRAM
and reload the software.
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Domain names are case sensitive.
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After you configure a domain name, it cannot be removed. You can reassign it only to a different
domain.
Follow these guidelines when configuring a VTP password:
Passwords are case sensitive. Passwords should match on all switches in the same domain.
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When the no vtp password form of the command is used, the switch returns to the no-password
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state.
Follow these guidelines when enabling VTP pruning:
If you enable pruning on the VTP server, it is enabled for the entire management domain.
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Only VLANs included in the pruning-eligible list can be pruned.
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Pruning is supported with VTP Version 1 and Version 2.
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Follow these guidelines when enabling VTP Version 2 (v2-mode):
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Toggling the version (v2-mode) state modifies certain parameters of certain default VLANs.
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Each VTP switch automatically detects the capabilities of all the other VTP devices. To use VTP
Version 2, all VTP switches in the network must support Version 2; otherwise, you must configure
them to operate in VTP Version 1 (no vtp v2-mode).
If all switches in a domain are VTP Version 2-capable, you need only to enable VTP Version 2 on
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one switch; the version number is then propagated to the other Version-2 capable switches in the
VTP domain.
If you are using VTP in a Token Ring environment or configuring a Token Ring bridge relay function
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(TrBRF) or Token Ring concentrator relay function (TrCRF) VLAN media type, VTP Version 2
(v2-mode) must be enabled.
If you are configuring a Token Ring or Token Ring-NET VLAN media type, you must use VTP
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Version 1.
Catalyst 3560 Switch Command Reference
2-700
Chapter 2 Catalyst 3560 Switch Cisco IOS Commands
78-16405-05
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