Release Note для Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 15.0
MME Enhancements for 15.0 MR6 ▀
Cisco ASR 5x00 Release Change Reference ▄
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Notes:
size cache_size
: Enter an integer from 0 to 10000 to specify the maximum number of tracking area code
(TAC) entries to be cached. Entering the ‘0’ value disables caching and should be followed by use of the
mme
paging cache clear
command (see CSCus14148).
timeout time
: Enter an integer from 1 to 1440 to specify the number of minutes that each TAC entry remains
valid. A lower cache timeout helps to refresh the cache frequently and enables this functionality to quickly
adapt to changes in the network. We recommend the
adapt to changes in the network. We recommend the
timeout
value be less than the expected eNodeB flap
frequency; for example, if the eNodeBs connected to the MME are expected to disconnect and reconnect every
10 minutes (due to network issues), then the timeout configuration should be less than 10 minutes.
10 minutes (due to network issues), then the timeout configuration should be less than 10 minutes.
Defaults: cache size = 5000 TAC entries per SessMgr; timeout time = 5 minutes.
Both size and timeout must be configured to enable paging caching optimization.
CSCus00927 - S1 and SGs associations not equally distributed across
mmemgr tasks
Feature Changes
Configuring the MMEDEMUX
Previous Behavior: MMEDEMUX had insufficient waiting time to distribute the incoming traffic to the associated
MMEMGRs because all MMEMGRs were not up and running on startup of the box.
MMEMGRs because all MMEMGRs were not up and running on startup of the box.
New Behavior: A new CLI command is introduced in the MMEDEMUX system, which allows operators to configure
the percentage of MMEMGRs to be associated, and the waiting time to process the incoming traffic. The MMEDEMUX
distributes the incoming traffic to the associated MMEMGRs based on the percentage value and wait time configured in
this command.
the percentage of MMEMGRs to be associated, and the waiting time to process the incoming traffic. The MMEDEMUX
distributes the incoming traffic to the associated MMEMGRs based on the percentage value and wait time configured in
this command.
Customer Impact: The new configuration provides the following:
By default, MME waits for ten minutes to check if 90% of the MMEMGRs have started.
MMEDEMUX allows users to configure the waiting time up to 3600 seconds.
MMEDEMUX allows users to configure from 1 to 100% of the available MMEMGRs.
Command Changes
task facility mmedemux
The new CLI command
mmedemux
allows users to configure the waiting time of the MMEDEMUX and the percentage
of MMEMGRs associated with the MMEDEMUX
configure
task facility mmedemux mmemgr-startup-percentage percent_value [ mmemgr-startup-wait-
time wait_time ]
time wait_time ]