Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 16
MME Enhancements for 16.0 ▀
Release Change Reference, StarOS Release 16 ▄
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rate
specifies the rate threshold in messages per second per eNodeB as an integer from 1 through 65535.
The
egtp-pathfail
keyword configures the UE deactivation pacing rate for MME S11/S10/S3 interfaces (any
EGTPC service with interface type “interface-mme”). Separate pacing rates must be defined for ECM
Connected and ECM Idle UEs using the
Connected and ECM Idle UEs using the
ecm-connected
and
ecm-idle
keywords respectively.
rate
specifies rate threshold in sessions per second per session manager (SessMgr) as an integer from 1
through 5000.
Note: Configuring a high deactivation rate can have a negative effect on performance. Appropriate
dimensioning exercises should be performed to arrive at the optimum rate.
dimensioning exercises should be performed to arrive at the optimum rate.
The
default
keyword applies the default MME message rate control configuration; S1 paging rate limit is
disabled and a path failure processing rate of 1000 per second per session manager without distinguishing
between idle/active sessions.
between idle/active sessions.
Performance Indicator Changes
MME Schema
The following new bulk statistic has been added to the MME schema to track the total S1 paging requests dropped by all
eNodeBs.
eNodeBs.
s1ap-transdata-pagingdrop
show network-overload-protection mme configuration
This new command displays the network overload protection configuration, for example:
MME message rate control
S1 paging per eNodeB : 150 pages/second
EGTP path failure ECM-Idle : 10 sessions/second/smgr
EGTP path failure ECM-Connected : 20 sessions/second/smgr
show mme-service statistics
The
show mme-service statistics
command now includes a new output field to display the number of S1 Paging
requests dropped for all MME services:
S1AP Statistics:
Transmitted S1AP Data:
...
Downlink UE LPPaTpt: 0
Paging Dropped: 0
show session subsystem facility mmemgr instance
The
show session subsystem facility mmemgr instance
command now includes a new output field to
display the number of S1 Paging requests dropped for the specified mmemgr instance: