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Community Member

MTU Loopback Size

Anybody knows the reason why the default

MTU size on loopback and GRE tunnel interfaces is 1514 bytes in place of the

standard 1500 ?

1 REPLY
Community Member

Re: MTU Loopback Size

Hello

I beleive the extra 14 bytes are used for Ethernet encapsulation --1500 is the size you get at the IP level.

regards,

cisand

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