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Cisco Bug: CSCuj68932 - Tunnel Authentication was failed by digest AVP 59 missing.

Last Modified

Jan 28, 2017

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

15.2(4)S2 15.3(1)S1 15.3(3)M

Description (partial)

Symptom: L2TPv3 tunnel with digest fails to establish. Cisco IOS device gives the following messages when "debug l2tp all" and "debug l2tp packet detail" are enabled:

 L2TP       _____:________: ERROR: SCCRQ AVP 59, vendor 0: unknown
 L2TP       _____:________: Unknown IETF AVP 59 in CM SCCRQ
Conditions: This issue is observed when IOS device peers with non-IOS device that sends IETF L2TPv3 digest AVP (IETF AVP 59) in L2TP control message. This issue is present in S images starting from Cisco IOS Release 12.2(33)XNC and in T train from Cisco IOS Release 15.3(2)T.
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