Hi, On Wed, Jul 13, 2011 at 09:38:56AM -0400, Keegan Holley wrote: > > You have an MTU problem. If you want to send (1500 byte + extra header > > bytes) packets over a link with a MTU of 1500 -> FAIL. > > > > It's actually going to be 1500 - header sizes. So 1500 - MPLS (4bytes) = > 1496 possibly - IPSEC (20 Bytes) = 1476
The input packet is 1500 bytes (+ethernet headers, not counted on IOS MTU
settings), you tack 4 byte MPLS on it -> your egress packet is 1504
(+ethernet header). So if your intermediate switches only allow
1500, you have a FAIL.
Which is what I said, just in more words.
gert
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