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Cisco Bug: CSCtc60936 - ITP not sending Notify message after sending ASP-UP-ACK message.

Last Modified

Feb 22, 2014

Products (1)

  • Cisco IP Transfer Point

Known Affected Releases

12.2(18)IXF1

Description (partial)

Symptom:

Second ASP is INACTIVE in load share mode. ITP did not send out NOTIFY message to second ASP, so no ASP Active message can be received from remote side.

Conditions:

a) The problem was observed with Cisco ITP (7600) running 12.2(18)IXF1 interacting with service provider 
b) After applying correct configuration, customer was not able to get both ASPs in Active state.
c) In addition, we also confirmed that SCTP connection is ESTABLISHED for ASP2, but still it was showing as "Inactive".
c) Collected further traces and observed that for failed ASP2 we do not receive ASPAC; so therefore the reason why of the ASP2 being "Inactive". After customer worked with their provider on this problem, they have disabled the NOTIFY reception restriction on their side, and we then obtained ASP2 in Active. 
d) Their provider has mentioned that for ASP2, they do not originally received NOTIFY (AS-Inactive) (as they did for ASP1) and that is the reason why they do not sent us ASPAC. They mentioned that they are following RFC 4666 and that the call flow should as the one on point 5.1.3 as per same RFC.
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