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I have a SAN with redundant cisco 2960s when I set it up a while ago I set all of the interfaces to use an MTU of 9000. I was looking at the config today and I noticed this line system mtu routing 1500 will that cause any problems? or because this is a switch everything should be fine because there isn't any routing.

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I assume this is for iSCSI? Is jumbo frames enabled on the array and the servers? –  mrdenny May 4 '11 at 19:10

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Peter, you can rest safe knowing that system mtu routing 1500 only affects routed Vlans.

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Perfect, Thanks –  Peter May 6 '11 at 5:25

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