ge-wan ge-wan ge-wan
|FE |FE | FE | FE
PE(36) PE PE PE
As the above figure,I have four OSR connected using
OSM-4GE-WAN's ge-wan interface,at each OSR I use one
L2 GE port connected two one of the 4 GE-WAN interface,
the L2 GE port use 802.1q trunk.
Each OSR use a FE link to connect PE router, the FE links
are access link of a vlan which was trunked by the L2 GE port
to the LE GE-WAN interface.
The GE-WAN subinterface and the L2 GE/FE interface are
all configured to pass jumbo frames.
Everything seems ok and after the VPN and all network run
normally for almost a month,packets bigger than 1500 bytes
can't pass through P1 or P2, and no events logged .
The case never happened to P3 and P4 .
The hardware and IOS version and mpls vpn configuration
are the same at the four OSR.
Who can give me some help or advice about that?