tunnel droping packets

[blue4cisco]

why do tunnel droping packets form output que. find attached output

[spremkumar]

Hi

Can you post the interface configs (tunnel/serial/ethrenet)taken out from both the router ?

regds

[paddyxdoyle]

It could be an MTU Problem, i had a similar issue recently.

If you do a "debug icmp" on the router and look for messages stating that the DF bit is set in a packet and it's being dropped as it exceeds the MTU.

This link might help you

http://www.cisco.com/en/US/tech/tk827/tk369/technologies_tech_note09186a0080093f1f.shtml

Thanks

Paddy