Cisco Bug: CSCtd08797 - Tagtotag w/ port-channel - Pkts route-cached, MLS CEF adj has MTU as 0
Mar 01, 2018
- Cisco 7600 Series Routers
Known Affected Releases
Symptoms: MPLS packets are software switched when port-channel interfaces are the MPLS interfaces. Affects tag-to-tag traffic. Conditions: Issue is seen after the router is upgraded to Cisco IOS Release 12.2(33)SRD3. The MTU for the MLS CEF adjacency for the MPLS label is misprogrammed and shows up as 0. Should see "MTU failures" incrementing in <CmdBold>show mls stat<noCmdBold>.
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