Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 16
▀ MME Enhancements for 16.1
▄ Release Change Reference, StarOS Release 16
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CSCup23821 - NPUMGR Restart causing MME enB SCTP failures and impact to
SGs/S1AP
Feature Changes
Statistics and Counters Enhancements
New counters have been added to to the output of the
show session subsystem facility mmemgr
command to
display specific packet drop reasons at the MMEMgr.
Several
show
commands now display enhanced information for more clarity and better understanding of any problem in
the flow-id creation/deletion process by MMEMgr. Refer to the Performance Indicator Changes section below for
complete details.
complete details.
These enhancements provide additional information to troubleshoot synchronization issues between the MMEMgr and
NPUMgr.
NPUMgr.
Performance Indicator Changes
show session subsystem facility mmemgr all
The output of this command has been enhanced to display counters for the following packet drop reasons:
Incorrect Length - Received PDU length at MED layer is less than Length value found after decoding the IP
Packet.
Oversized PDU - Received PDU length at MED layer is more than DBUF size(10K bytes).
No Flow exists - There is no SCTP flow existing for the flowId received from underlying layer.
Flow Inactive Ver - Flow entry is not Active when the message is received.
Invalid IP Ver - IP Version of the IP packet is not matching with the IP version for the SCTP flow.
Port Mismatch - Destination SCTP Port of the IP packet is not matching with the SCTP port for the SCTP flow.
Invalid Protocol - Protocol type is not found to be SCTP in the IP header.
show mme-service enodeb-association path-info
The output of this command has been enhanced to display the Flow Id at the MMEMgr level.
Flow Id
show mme-service enodeb-association full all
The output of this command has been enhanced to display the Flow Id at the MMEMgr level.
Flow Id
The output of this command has also been enhanced to display the individual path status along with flow information.
Path Source IP Address