Cisco Cisco Packet Data Gateway (PDG)
MME Service Configuration Mode Commands
▀ esm
▄ Command Line Interface Reference, StarOS Release 17
7206
esm
Defines the Evolved Session Management timer parameters like timeout durations for timers and retransmission counts
for the retransmission of Non-Access Stratum (NAS) messages in MME service.
for the retransmission of Non-Access Stratum (NAS) messages in MME service.
Product
MME
Privilege
Administrator
Mode
Exec > Global Configuration > Context Configuration > MME Service
configure > context context_name > mme-service service_name
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-mme-service)#
Syntax
esm { t3396-timeout t3396_dur | t3485-timeout t3485_dur | t3486-timeout t3486_dur |
t3489-timeout t3489_dur | t3495-timeout t3495_dur }
t3489-timeout t3489_dur | t3495-timeout t3495_dur }
default esm { t3396-timeout | t3485-timeout | t3486-timeout | t3489-timeout | t3495-
timeout }
timeout }
default
Resets the specified Evolved Session Management timer timeout to the system default value.
t3396-timeout t3396_dur
Sets the ESM backoff timer duration (in seconds). If an ESM request is rejected because of congestion, the
reject will have ESM cause “Insufficient resources” and will include a back-off timer IE (T3396). This back-
off timer is chosen randomly and will be 10% below or above the configured T3396 timer value.
reject will have ESM cause “Insufficient resources” and will include a back-off timer IE (T3396). This back-
off timer is chosen randomly and will be 10% below or above the configured T3396 timer value.
t3396_dur
is an integer from 0 through 11160 (0-186 minutes). Default: 1500 seconds (25 minutes).
The MME will not start any timer for SM back-off, nor store the SM back-off timer expiry time. If an SM
request is received and if congestion exists, the request would be rejected based and a new random value will
be sent as the ESM back-off timer value.
The MME will reject any subsequent requests from the UE targeting to the same APN based on the presence
of congestion at that time and not based on the SM back-off time previously sent to the UE.
If the ESM cause value is #26 “insufficient resources” or #27 “missing or unknown APN”, the MME will
include a value for timer T3396 in the reject message. If the ESM cause value is #26 “insufficient resources”
and the request message was sent by a UE accessing the network with access class 11 - 15 or if the request
type in the PDN CONNECTIVITY REQUEST message was set to “emergency”, the MME will not include a
value for timer T3396.
request is received and if congestion exists, the request would be rejected based and a new random value will
be sent as the ESM back-off timer value.
The MME will reject any subsequent requests from the UE targeting to the same APN based on the presence
of congestion at that time and not based on the SM back-off time previously sent to the UE.
If the ESM cause value is #26 “insufficient resources” or #27 “missing or unknown APN”, the MME will
include a value for timer T3396 in the reject message. If the ESM cause value is #26 “insufficient resources”
and the request message was sent by a UE accessing the network with access class 11 - 15 or if the request
type in the PDN CONNECTIVITY REQUEST message was set to “emergency”, the MME will not include a
value for timer T3396.
t3485-timeout t3485_dur
Sets the timeout duration (in seconds) for the T3485 timer. This timer is used by the default EPS bearer
context activation procedure.
context activation procedure.