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Cisco Bug: CSCuo16316 - 1NG: Nightster explicit QinQ entry hitting QinAny entry in VLAN TCAM

Last Modified

Jun 23, 2016

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

15.4(2)S

Description (partial)

Symptom:
On ASR1001-X, for the fixed ports under BUILT-IN-2T+6X1GE, Packets will hit the QIN-ANY entry if configured first, rather than explicitly configured QINQ entry and pick up the classification policy for QIN-ANY entry.

Conditions:
This problem only occurs  on ASR1001-X on BUILT-IN-2T+6X1GE ports, if Customer configures 'QINAny' entry followed by explicit QINQ entry.

Eg.
encap dot1q 50 second-dot1q any
encap dot1q 50 secnd-dot1q 10
encap dot1q 50 secnd-dot1q 50

So all the packet having outer vlan tag as 50 will always hit the hardware entry corresponding to entry '50-any' which will 
cause the classification policy of '50-any' to be applied to entry '50-10' and '50-50' as well
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