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1500+ byte MTU for exchange points (posted 2001-09-30)

Between August 20 and 26 an interesting subject came up on the NANOG list: when using Gigabit Ethernet for exchange points, there can be a nice performance gain if a larger MTU than the standard 1500 byte one is used. However, this will only work if all attached layer 3 devices agree on the MTU. This can be accomplished by having several VLANs and setting the MTU for each subinterface if a single MTU can't be agreed upon.