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SIP meeting conference fragment issue

Hi, I was wondering if anyone had come across a similar issue we are having when a SIP meeting invite request is transmitted (From a Nortel CS1000).

The packet gets fragmented on the LAN before it hits our CE router (7206, ios 12.2(37) ) and we see both initial & subsequent fragment heading to the LAN port of the router.

However on the other side of our MPLS network, we only receive the initial fragment packet, not the subsequent fragment.

There are no firewalls in the path, and I can't see any bug issues relating to this specific problem.

If anyone has any tips on how to resolve this issue I'd appreciate it!

Thanks, Neil.

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