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Jumbo Frames

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unclerico

IS-IT--Management
Jun 8, 2005
2,738
US
3750 (WS-C3750G-48TS)
Running c3750-ipbasek9-mz.122-44.SE

I have configured a VLAN and set the MTU to 9000 for the VLAN. When I issue a show vlan command at the bottom of the output it shows like so:
Code:
VLAN  TYPE  SAID   MTU
44    enet  100044 9000
When I issue a show vlan mtu command it shows:
Code:
VLAN   SVI_MTU   MinMTU   MaxMTU
44     1500      1500     1500
If I enter the following commands will the SVI_MTU and MaxMTU go to 9000 for the VLAN thus enabling Jumbo Frames support?
Code:
system mtu 1500
system mtu jumbo 9000
system mtu routing 1500
By leaving the system mtu 1500 and the system mtu routing 1500 I shouldn't have any issues if I connect other switches with 10/100 ports or have 802.1q trunks established with other non Cisco devices should I? I know this will depend on how the other devices/protocols support MTU sizes, but in general I should be ok? Is there anything that I should be aware of with changing MTU sizes because I am very leery about making global changes to any device? I don't have a very good test environment to try this out on so I hope you don't mind my question. Thanks in advance.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)
 
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