Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP CGN
Known Affected Versions:
11.6.2 HF1
Fixed In:
11.6.0, 11.5.1 HF3
Opened: Mar 13, 2014 Severity: 1-Blocking Related Article:
K16358
Deletion of serverside point-to-point tunneling protocol (PPTP) Generic Routing Encapsulation (GRE) flow may cause a core dump in TMM.
Traffic disrupted while tmm restarts.
If the BIGIP is configured to use SP DAG (src-ip on inbound/subscriber vLAN and dst-ip on outbound/internet VLAN) and LSN is under configured on outbount/internet VLAN (in this case, only one IP address), the unexpected teardown or deletion of a PPTP GRE serverside flow will cause TMM to core dump.
This issue has no workaround.
Resolved when the BIGIP is configured to use SP DAG (src-ip on inbound/subscriber vLAN and dst-ip on outbound/internet VLAN) and LSN is under configured on outbount/internet VLAN (in this case, only one IP address), the unexpected teardown or deletion of a PPTP GRE serverside flow will cause TMM to core dump.