[c-nsp] Jumbo frames and 3750

[Tassos Chatzithomaoglou]

On 2nd though, i don't think this will help you for jumbo frames :(


-- 
Tassos


Tassos Chatzithomaoglou wrote on 15/8/2006 9:51 ??:
 > I had exactly the same problem. Check the "system mtu routing <x>"
 > command...
 >

Raniery Pontes wrote on 15/8/2006 9:37 ??:
 >   Hi everybody,
 >
 >   we´ve got a customer with a 3750  (IOS Version 12.2(25)SE) running a pretty simple 
configuration. There are 2 routed vlans: a default vlan and a "upstream" vlan, which goes to 
upstream provider (our company). The 3750 has only a default static route pointing upstream.
 >
 > We´re an R&E network and we´ve got jumbo-frames enabled on our network.
 > This customer has enabled jumbo-frame on the 3750 ("system mtu jumbo
 > 9000" command).
 >
 > When I send jumbo-frames to an end station connected to the upstream
 > vlan (I mean, 3750 doesn´t need to route between vlans), everything
 > works fine. But when I try to send jumbo-frames to a station in the
 > default vlan, it fails.
 >
 > I´ve tried to change "ip mtu" in both vlans, but the maximum allowed
 > value is 1500 bytes.
 >
 > Does the 3750 only "switch" jumbo frames? Don´t they route jumbo-frames
 > (or should I say jumbograms) ?
 >
 > I´ve checked Cisco documentation, but I haven´t found anything regarding
 > this issue.
 >
 > Thanks in advance
 >
 > Raniery
 >
 >
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