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Cisco Bug: CSCuo24824 - BVI egress non-recursive traffic will be lost if ingress is MPLS Trident

Last Modified

Jul 21, 2018

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

4.3.1.FWDG 4.3.2.FWDG 4.3.4.FWDG 5.1.0.FWDG 5.1.1.FWDG 5.2.0.BASE

Description (partial) 

Symptom:
Traffic for  prefixes learnt over BVI is dropped.

Conditions:
(1) The ASR9K is running the following IOS-XR releases
4.3.1
4.3.2
4.3.4
5.1.0
5.1.1

(2) The ASR9K chassis is one of the following:
ASR-9006
ASR-901x
ASR-902x

(3) Traffic  is bound to prefixes learnt over BVI.
The traffic is entering the ASR9K via the "low scale" Ethernet line cards over MPLS core.
The Ingress line cards have the following PIDs:
(a)A9K.*-L
(b)A9K.*-B,
(c)A9K.*-LE

(4) Routing protocols are configured over BVI
Static route is pointing to BVI as next hop.
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Bug Details Include

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  • Status
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