My network has deployed mpls on ciscos on a trial basis on only a small
subsection of our network.
I have a cisco tac case opened for the situation where Cisco ME3600X has
balanced path and is dropping traffic.
- in the balanced path One path is a label switched path and the other is non
label switched.
Traffic is dropped by the ME3600X when trying to push a packet it received with
a label out the non label switched path.
It only impacts traffic it receives traffic with a label, it does not impact
traffic the router generates.
this impacts all the IOSs available for the ME3600X.
ME3600X-2#sho ip route 5.5.5.5
Routing entry for 5.5.5.5/32
Known via "ospf 100", distance 110, metric 20
Tag 66000, type extern 2, forward metric 11
Last update from 10.200.3.3 on Vlan2003, 2d15h ago
Routing Descriptor Blocks:
* 10.200.4.4, from 5.5.5.5, 1w6d ago, via Vlan2004
Route metric is 20, traffic share count is 1
Route tag 66000
10.200.3.3, from 5.5.5.5, 2d15h ago, via Vlan2003
Route metric is 20, traffic share count is 1
Route tag 66000
ME3600X-2#show mpls forwarding-table 5.5.5.5
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
21 20 5.5.5.5/32 0 Vl2003 10.200.3.3
No Label 5.5.5.5/32 0 Vl2004 10.200.4.4 <<
traffic would be dropped when this path chosen
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