From: Jeremy O'Dette (jeremyodette@hotmail.com)
Date: Thu Feb 23 2006 - 14:31:37 GMT-3
What do you get from a 'show vlan brief'? Do you see all of the vlans you
are expecting? If you have ports assigned to a vlan that doesn't exist on
the switch they'll be isolated. You can confirm this with a 'show interface
status' and see if the ports are 'inactive'.
From experience with the 4000/4500 platform you might also check the
supervisor card. If you have a spare you might try swapping it out. I ran
into an issue at my office 2 years ago where we had 3 supervisor failures in
less than 9 months. In all cases IOS didn't report / log ANYTHING, traffic
just stopped being forwarded properly. In our case we were on a sup3/4006
platform. Good luck!
Jeremy O'Dette
CCIE #14973
jeremyodette@hotmail.com
>From: James Ventre <messageboard@ventrefamily.com>
>Reply-To: James Ventre <messageboard@ventrefamily.com>
>To: roy bustos <roybustos@hotmail.com>
>CC: ccielab@groupstudy.com
>Subject: Re: OT: 4506 problem
>Date: Thu, 23 Feb 2006 11:46:30 -0500
>
>Well, a VTP problem may not be too far off since you're mixing and matching
>versions - which isn't supported in the same domain:
>
>
>http://www.cisco.com/en/US/products/hw/switches/ps679/products_configuration_guide_chapter09186a008007d891.html#33536
>
>"VTP version 1 and VTP version 2 are not interoperable on switches in the
>same VTP domain."
>
>
>James
>
>
>
>
>
>
>roy bustos wrote:
>>Hi Guys!
>>
>>I've got a switching problem which has been brought to me, and was
>>wondering
>>if you guys could provide some insight...
>>
>>I've got this network with 3 switches, the hub is a 6509 and the spokes
>>are
>>4506s anyways, there is one 4506 that suddenly stopped working for 40
>>minutes. I've checked everything in it and even opened up a Cisco case
>>about
>>it. Cisco and I found no problem, it wasn't a spanning tree issue or
>>anything, and I checked the logs and had nothing in it, the trunks were
>>running fine. I'm suspecting that it was a VTP issue since even nodes
>>within
>>the switch that have static IPs were unable to contact each other, so it
>>may
>>have lost VLAN information, but then nothing in the log points to that.
>>The
>>6509 runs as a VTP sever and the spokes run as VTP clients. I came from
>>environments that ran all switches in transparent mode.
>> We are running VTP version 1 at the server and version 2 at the spokes.
>>
>>Thanks.
>>
>>Roy Bustos
>>
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