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Cisco Bug: CSCvs24287 - L3IGMPSYNC: Change of ESI values may result in process reset

Last Modified

Sep 02, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

6.6.3.BASE 7.1.2.MCAST 7.2.1.ROUT

Description (partial)

Symptom:
When the configured value of an ethernet-segment is modified, L2VPN process (l2vpn_mgr) unexpectedly crashes.

Conditions:
This issue affects IOS XR release 7.0.90 on the ASR9k and NCS5500 platforms.

The issue occurs during configuration change.

Changing the ethernet-segment identifier values on a Layer3 interface synchronised for IGMP, with a single in-place modify sequence, results in a crash.

The issue only occurs if the ethernet-segment identifier change is made on an interface which has a sub-interface configured for EVPN that does not have a default or non-default VRF associated with it (i.e. there is no IP address for the sub-interface).

Configuration being applied which results in crash:
<CmdBold>
evpn
  interface Bundle-Ether 1
    ethernet-segment
      identifier type 0 11.11.11.ac.11.11.11.0a.11
<NoCmdBold>
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