No able to set MTU for jumbo frames

Unanswered Question
Sep 23rd, 2009

(config-if)#mtu 9189

% Interface GigabitEthernet2/29 does not support user settable mtu.

I have this problem too.
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Jerry Ye Wed, 09/23/2009 - 11:42

What type of module? Please post the output of show module.

Regards,

jerry

plavine Thu, 09/24/2009 - 08:46

sh module

Chassis Type : WS-C4503

Power consumed by backplane : 0 Watts

Mod Ports Card Type Model Serial No.

---+-----+--------------------------------------+------------------+-----------

1 6 Sup V-10GE 10GE (X2), 1000BaseX (SFP) WS-X4516-10GE JAE1221IXDV

2 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE10307EWC

3 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAE10307HLV

M MAC addresses Hw Fw Sw Status

--+--------------------------------+---+------------+----------------+---------

1 0018.187a.5600 to 0018.187a.5605 5.0 12.2(31r)SGA 12.2(46)SG Ok

2 000a.b87e.8610 to 000a.b87e.863f 2.3 Ok

3 000a.b8ad.4f70 to 000a.b8ad.4f9f 2.3 Ok

Jon Marshall Thu, 09/24/2009 - 10:43

This is a hardware limitation. The WS-X4548-GB-RJ45 does not support Jumbo frames -

http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00801350c8.shtml#subtopic4b

Also attached is data sheet for 4500 line cards which show which ones support jumbo frames and which don't -

http://www.cisco.com/en/US/prod/collateral/modules/ps2710/ps5494/product_data_sheet0900aecd802109ea_ps4324_Products_Data_Sheet.html

Jon

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