On Thursday, June 23, 2011 12:03:12 AM Payam Chychi wrote: > However when your going cisco/juniper there is always a > mismatch as juniper does not take into accnt the 4byes > required for crc so fragmentation happens and if the pkt > has DF set (as it should since max mtu negotiated on is > suppose to be safe) the other side well drop the pkt and > thus killing the bgp update pks and eventually timing > out. > > Is why I set the juniper side +14 bytes to ensure mtu > problems done come up (+18 on links doing dot1q)
This is certainly true for IOS, but IOS XR (CRS and ASR9000/9900) is now similar to Junos re: interface MTU configuration. Makes things interesting when you have Junos, IOS and IOS XR running in your environment. Cheers, Mark.
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