ODS Runbook BgpNeighborState fails to perform packet capture with message "Cannot derive source interface for address #.#.#.#"

Products

• VMware NSX

Issue/Introduction

• BGP is down.
• You have attempted to gather additional outage data from the Edge using the ODS Runbook BgpNeighborState command:
  
  

  edgecli> start invocation runbook BgpNeighborState runbook-arg --peer_ip #### ----lr_name <Tier0-Name> --pkt_cap true --pkt_cap_count ####

• After the runbook execution, one of the output artifact files contains the following text:
  
  

  =============================================================
  Cannot derive source interface for address ####
  =============================================================

• The expected bfd_packet.pcap file is not created in the Edge's /image/vmware/nsx/file-store/ folder.

Environment

• VMware NSX
• VMware VCF 9.x

Cause

The use of non-/24 subnets in the Edge's interface IP, such as /29, will trigger the symptom.

Resolution

This is a known issue that will be addressed in a forthcoming version of NSX.

Additional Information

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