I have cisco 7606 with module WS-X6724. I have configured mpls mtu 2000 on the router interface configuration (P router).
However when we tested from MPLS VPN CE to CE ping test, we cant achive 1500 bytes end-to-end. We transfered the link to use Ge on the sup720 and it works fine (CE to CE 1500 bytes).
I have once again use port on the WS-X6724 on other router, still failed to achive CE-CE. Upon checking we found that this port dont really support MPLS MTU even it accepts the config.
Does this harware failure or IOS bugs?