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Cisco Bug: CSCvs52000 - COP File for TCP_SACK_workaround Prevents iptables Rules Update

Last Modified

Jan 21, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

10.5(2.10000.5) 11.5(1.10000.6) 12.0(1.10000.10) 12.5(1.10000.22) 12.5(1.11900.146)

Description (partial)

Symptom:
If we add new Subscriber, installation of this subscriber will fail because firewall rules not being populated with records for new subscriber.

Also, adding a new SIP security profile with a new port will not work either because the new port will not be opened in the firewall rules.

This is happening despite Cluster Manager prints POLICY_INJECTED for new subs, in fact iptables rules cannot be updated anymore.

Conditions:
This happens on systems where ciscocm.CSCvq19683_TCP_SACK_workaround_v1.0.cop.sgn has been installed.

NOTE: This is only an issue on servers where the ciscocm.CSCvq19683_TCP_SACK_workaround_v1.0.cop.sgn has been installed. If a customer has upgrade to a full ISO release with the fix for CSCvq19683, there is no issue.
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