Hi,
We're having a weird problem in one of our remote offices, connected through
a GRE tunnel (using internet). The remote ISP, aparently is dropping randomly
(or selectively) some
GRE packets. when we ping the remote physical interface through the tunnel some
packet drops are observed, but if icmp packets don't get into the tunnel they
are never dropped. this is causing the ospf adjacencies to go down for no
reason and is giving us a hard time. We've changed the tunel interface MTU to
1400, but it didn't work. besides OSPF's hello are less than a hundred octets,
and i don't see a reason for the ISP dropping so small packets. The interface
connected to the provider is a Gigabit Ethernet. Any suggestion to avoid this
behaviour? any hint?
Alejandro Wainshtok
Network Engineer
CCNP
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