The 3750 and 3560 can only pass L2 jumbos. They are limited to a frame size of 1998 for routed packets.
http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration _example09186a008010edab.shtml#c3 David -- http://dcp.dcptech.com > -----Original Message----- > From: [email protected] [mailto:cisco-nsp- > [email protected]] On Behalf Of Jeff Fitzwater > Sent: Thursday, June 11, 2009 10:14 AM > To: Jeff Fitzwater > Cc: [email protected] > Subject: Re: [c-nsp] 3750 running jumbo frames ? > > I forgot to mention that the hosts that will be using jumbo > frames, > will be on a separate VLAN between the two switches. The concern was > since the jumbo frame was a global change (all gig ports on 3750), how > would it impact the other vlan that only has 1500 MTU hosts on. I > would assume there isn't any impact for hosts with a 1500 MTU, its > just that the switch can now pass 9k frames if present. The switch > management was the other key issue. > > > Thanks > > > Jeff > > > On Jun 11, 2009, at 9:44 AM, Jeff Fitzwater wrote: > > > We have the need to run two 3750 switches with jumbo frames (9000), > > for a high performance data transfer application. Both switches > > will be manages by connections to a NON-JUMBO frame environment. > > (That is, if this will work) > > > > If I enable jumbo frames (which is a global change) and leave the > > management interface MTU at 1500 so the switch will use 1500 as > > packet size for all management, is there any NEGATIVE ISSUES I > > should be aware because of them being connected to the non-jumbo > > environment? > > > > > > > > Thanks for any help, > > > > > > > > > > Jeff Fitzwater > > OIT Network Systems > > Princeton University > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
