Troubleshooting Features Support - Cisco ASR 5x00 Home eNodeB Administration Manual

▀ Features and Functionality - Base Software
 HENBGW DEMUX - The HENBGW DEMUX task recovers and updates the relevant information regarding
HeNB/UE connections by querying all the session managers (SMGRs) in the system. This task should not be
started on a PSC in which SMGRs are started. Regardless of whether session recovery is enabled or not, the
HENBGW DEMUX task should always be started on the Demux PSC.
As of now, there is no full support of Session Recovery on HeNB-GW for UEs. ONly the IPSec tunnel is
preserved in the HeNB-GW. Upon recovery, the IPsec tunnel being preserved, the HeNB re-connects and the
UE is paged via network initiated service request or transition to ECM ACTIVE state on the MME by sending
uplink packets itself, but only after the HeNB has successfully re-established its association with the HeNB-
GW.
 SMGR – The SMGRs follow the standard guidelines used for other services and recover HeNB association and
UE state from its AAAMGR pair.
 HENBGWMGR – The HENBGWMGRs use the henbgw-network-service information to restart the SCTP
connections towards MME(s). HENBGWMGRs are demux tasks and are started on the Demux PSC. Any state
information required for recovery is fetched from the HENBGW DEMUX task.
 GTPUMGR – GTPUMGR task(s) are started in the demux PSC. Any required state information after a task
restart is fetched from the SMGR(s).
A minimum of 3 ACTIVE PSCs and 1 STANDBY PSC is required to support session recovery. One of the active PSCs
works as the DEMUX PSC and runs the demux tasks.

Troubleshooting Features Support

HeNB-GW provides monitor protocol support for S1AP, SCTP and GTP-U. Monitor subscriber feature has been
extended to include HeNB-GW calls also. Subscriber monitoring has been supported based on 'callid'.
The following logging facilities can be used for troubleshooting HENBGW:
 henb-gw
 henbgwdemux
 henbgwmgr
 gtpumgr
 egtpu
 ipsecmgr
 sessmgr
The above listed in addition to the existing facilities can be enabled to capture logs at different levels, for example:
information, trace, debug etc.
Important:
▄ Cisco ASR 5x00 Home eNodeB Gateway Administration Guide
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For more information on troubleshooting, refer the Troubleshooting the Service chapter of this guide.
HeNB Gateway in Wireless LTE Network