I have. A cisco 3750, but an older release. Must be a bug. But wanted to know if it was a general problem overall. Doesn't look like it.
---- Matthew Huff | 1 Manhattanville Rd Director of Operations | Purchase, NY 10577 OTA Management LLC | Phone: 914-460-4039 aim: matthewbhuff | Fax: 914-460-4139 > -----Original Message----- > From: cisco-nsp-boun...@puck.nether.net > [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Phil > Mayers > Sent: Friday, December 03, 2010 10:58 AM > To: cisco-nsp@puck.nether.net > Subject: Re: [c-nsp] Adjusting MTU on 802.1q links > > On 03/12/10 13:49, Matthew Huff wrote: > > I don't know why it never occurred to me, but on 802.1q trunk links, > > non-native vlans are encapsulated within 802.1q headers, therefore > > max packets would have to be fragmented. On trunks that support it, > > should standard practice to bump up the mtu on both sides to account > > for the 802.1q header. > > No. 802.1q trunks do this automatically i.e. bump MTU from 1518 to 1522 > to account for the extra space. I've never seen a switch platform that > needed any special config for this to work. > _______________________________________________ > cisco-nsp mailing list cisco-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
