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Cisco Bug: CSCvt97324 - XR: ARP packets dropped in IPv4 interworking between Bundle-Ether & POS

Last Modified

Sep 02, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

6.2.3.BASE

Description (partial)

Symptom:
ARP resolution is not working in ipv4 interworking scenario between Bundle & POS interface.

"show netio drops" command is reporting drops on fint_l2transport with packet_null_action:

 fint_l2transport <125>  (l2transport <36> decaps):
    packet_null_action                                --         554       35456

Problem is specific to the Bundle interface only.
When physical interface is used on Ethernet side, issue is not present.

Conditions:
Interworking ipv4 configured between Bundle-Ether & POS interface: 

Example config:

l2vpn
 xconnect group atom-any-to-any
  p2p VLAN101
   interface POS0/0/0/0.101
   interface Bundle-Ether1.101
   interworking ipv4
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