Symptom:
- MPLS is being processed by the CPU instead of HW switching.
- <CmdBold>rem com sw show mls vlan-ram<noCmdBold> shows "0" value under vpn-num and netdr shows that mpls is being processed by the CPU:

Example:
7600# rem comm sw sh mls vlan-ram 1906 1906

TYCHO Vlan RAM
Key: * => Set, - => Clear

vlan eom nf-vpn mpls mc-base siteid stats rpf vpn-num bgp-grp l2-metro rpf-pbr-ovr
----+---+------+----+-------+------+-----+---+-------+-------+--------+-----------
1906  *    -     *      0       0     -    -       0      0       -         *      <<<=== vpn-num 0


- There is a possibility of a high CPU due to interrupts.

Conditions:
The symptom may occur on the Cisco 7600 Series Routers after an SSO or module reload is performed on PE with L2VPN in PFC VLAN mode.