Guest

Preview Tool

Cisco Bug: CSCsy90101 - DMVPN natted ESP traffic causing lost packet during rekey

Last Modified

May 31, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

12.4(24)T

Description (partial)

Symptom:
DMVPN
EIGRP is flapping during rekey of ipsec phase 2
The tunnel recovers by itself

Mar 16 15:51:43.826: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 172.16.7.4 (Tunnel7) is down: holding time expired
Mar 16 15:51:52.726: ISAKMP: set new node 678721127 to QM_IDLE
[..] Reconnection done
Mar 16 15:52:02.582: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 172.16.7.4 (Tunn

Conditions:
Spoke running 12.4.24T
During rekey of IPsec phase 2
NAT enabled on the spoke without specifying to deny esp traffic
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.