Tag: VTP

Outage Story with VTP

Filed in Switching by on December 2, 2007 4 Comments
Outage Story with VTP

One of my accounts had an unfortunate network outage that lasted about an hour. This outage was caused by human error with VTP but not in the classic revision number way we have heard about before. Here is what happened…

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Things to know about VTP

Filed in CCIE, Switching by on November 21, 2007 2 Comments
Things to know about VTP

Some notes about VTP (VLAN Trunking Protocol): Cisco switches running Cisco IOS store VTP and VLAN information in a separate database stored in Flash, in file called vlan.dat. Cisco switches running CatOS store VTP and VLAN information in the main switch configuration file, stored in NVRAM. VTP information is only transmitted over trunk ports. A […]

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