OT- MTU on ASA5510 outside interface

Hi all,

sorry for sending a OT, i am facing a strange problem with 2 ASA5510 and
didn't find so far a bug indication to what really looks to be a bug:
The outside interfaces of two ASAs (IOS 8.0(5)) are interconnected via
Metro Ethernet: the communication between these FWs is being secured by
an L2L IPsec Tunnel the MTUs are set to the default of 1500Byte. It was
verified in first place that packets bigger than 1020 byte were not
passing through. The SP rreported the link ok. Going directly to one of
the Firewalls and sending a ping to the other one, the same situation
happens... Pings bigger that 1020 byte are dropped at the reception (and
the Interface drop counters increase). Any ideas?

Thank you in advance

/
/

Blogs and organic groups at http://www.ccie.net
Received on Tue Jul 26 2011 - 16:01:40 ART