Configures
congestion control policies.
Privilege
Security
Administrator, Administrator
Mode
Exec > Global
Configuration
configure
Entering the above
command sequence results in the following prompt:
[local]host_name(config)#
Syntax
congestion-control policy { asngw-service | asnpc-service | epdg-service fng-service | ggsn-service | ha-service | hnbgw-service | hsgw-service | ipsg-service | lma-service | lns-service | mipv6ha-service | pcc-af-service | pcc-policy-service | pdg-service | pdif-service | pdsn-service | pdsnclosedrp-service | pgw-service | phsgw-service | phspc-service | saegw-service | samog-service | sgsn-service | sgw-service | wsg-service } action { drop | none | redirect | reject }
congestion-control policy mme-service action { drop | none | reject | report-overload { permit-emergency-sessions | reject-new-sessions | reject-non-emergency-sessions } enodeb-percentage percentage }
congestion-control policy { critical mme-service action-profile action_profile_name | major mme-service action-profile action_profile_name | minor mme-service action-profile action_profile_name }
congestion-control policy { critical | major | minor } sgsn-service action-profile action_profile_name
no congestion-control policy { critical | major | minor } sgsn-service
default congestion-control policy { asngw-service | asnpc-service | epdg-service | fng-service | ggsn-service | ha-service | hnbgw-service | hsgw-service | ipsg-service | lma-service | lns-service | mipv6ha-service | mme-service | pcc-af-service | pcc-policy-service | pdg-service | pdif-service | pdsn-service | pdsnclosedrp-service | pgw-service | phsgw-service | phspc-service | saegw-service samog-service | | sgsn-service | sgw-service | wsg-service }
default
Specifies the
Congestion Control policy action for the selected service to its default value.
asngw-service
Specifies the Congestion Control policy action for the ASN-GW
service.
asnpc-service
Specifies the Congestion Control policy action for the ASN PC-LR
service.
critical
For MME (starting
with Release 14.0),
or ePDG (starting with
Release 14.1),
or for SGSN (starting with Release 17.0),
this keyword associates the action-profile to be used for critical
congestion thresholds for the MME
or SGSN's
service.
epdg-service action
Specifies the Congestion Control policy action for the ePDG
service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
For ePDG type of session/calls,
redirect
action is not supported.
fng-service
Specifies the Congestion Control policy action for the FNG
service.
ggsn-service
Specifies the Congestion Control policy action for the GGSN
service.
ha-service
Specifies the
Congestion Control policy action for the HA service.
hnbgw-service
Important |
In Release 20 and later, HNBGW is not supported. This keyword must not be used for HNBGW in Release 20 and later. For more
information, contact your Cisco account representative.
|
Specifies the
Congestion Control policy action for the HNB-GW service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
hsgw-service
Specifies the
Congestion Control policy action for the HSGW service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
redirect :
Specifies that the system should redirect new session requests to an alternate
device.
Important |
If this
option is used, the IP address of the alternate device must be configured using
the
policy overload
redirect command that is part of the HSGW service
configuration.
|
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
ipsg-service
Specifies the
Congestion Control Policy action for the IPSG service. The policy specifies how
the IPSG service will respond when the system detects that a congestion
condition threshold has been crossed.
Supported policy
actions are:
Default:
none
lma-service
Specifies the
Congestion Control policy action for the LMA service
lns-service
Specifies the
Congestion Control policy action for the LNS service.
mipv6ha-service
Specifies the
Congestion Control policy action for the MIPv6-HA service.
major
For MME (starting
with Release 14.0),
or ePDG (starting with
Release 14.1),
or for SGSN (starting with Release 17.0),
this keyword associates the action-profile to be used for major
congestion thresholds for the MME
or SGSN's
service.
minor
For MME (starting
with Release 14.0),
or ePDG (starting with
Release 14.1),
or for SGSN (starting with Release 17.0),
this keyword associates the action-profile to be used for minor
congestion thresholds for the MME
or SGSN's
service.
mme-service
Sets the congestion control policy for action to take when
subscriber sessions exceeds the defined threshold limit.
For MME type of session/calls,
redirect
action is not supported.
Important |
The
mme-service
keyword option is available only in releases prior to 14.0. In 14.0 and higher,
you must first select either the critical, major or minor policy level first.
Refer to the
congestion-action-profile command in the LTE
Policy Configuration mode to create action-profiles which in turn define the
actions to be taken when thresholds are exceeded in Release 14.0 and higher for
MME.
|
pcc-af-service
Specifies the
Congestion Control policy action for the PCC Application Function (AF) service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
pcc-policy-service
Specifies the
Congestion Control policy action for the PCC Policy service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
pcc-quota-service
Specifies the
Congestion Control policy action for the PCC Quota service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
pdg-service
Specifies the
Congestion Control policy action for the PDG service.
pdif-service
Specifies the
Congestion Control policy action for the PDIF service.
pdsn-service
Specifies the
Congestion Control policy action for the PDSN service.
pdsnclosedrp-service
Specifies the Congestion Control policy action for the PDSN
Closed R-P service.
pgw-service
Specifies the
Congestion Control policy action for the P-GW service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
For P-GW
sessions/calls,
redirect
action is not supported.
saegw-service
Specifies the
Congestion Control policy action for the SAEGW service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
For SAEGW
sessions/calls,
redirect
action is not supported.
samog-service
Specifies the
Congestion Control policy action for the SaMOG service.
Supported policy
actions are:
- drop : Specifies that the system should drop
incoming packets containing new session requests.
- none : Specifies that the system should take no
action.
- reject : Specifies that the system processes new
session request messages and responds with a reject message.
sgsn-service
Specifies the Congestion Control policy - the congestion
response actions for the SGSN service.
Prior to Release
17.0, the supported policy actions in this command are:
- drop : Specifies that the system should drop
incoming packets containing new session requests.
- none : Specifies that the system should take no
action.
- reject : Specifies that the system processes new
session request messages and responds with a reject message.
With Release 17.0 and
higher, to define a policy you must first select one of the three congestion
levels: critical, major or minor. Next select the service with the
sgsn-service
keyword and then associate a congestion-action-profile. Refer to the
congestion-action-profile command in the
SGSN-Global Configuration mode to create the congestion-action-profiles which
define the congestion response actions to be taken when thresholds are exceeded
for the SGSN.
sgw-service
Specifies the
Congestion Control policy action for the S-GW service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
For S-GW
sessions/calls,
redirect
action is not supported.
wsg-service
Specifies the
Congestion Control policy action for the WSG service.
Supported policy
actions are:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
action { drop | none | redirect | reject }
Specifies the
policy action:
-
drop :
Specifies that the system should drop incoming packets containing new session
requests.
-
none :
Specifies that the system should take no action.
This is the default for
PDIF-service.
-
redirect :
Specifies that the system should redirect new session requests to an alternate
device. (HA, HSGW, and PDSN only)
Important |
If this
option is used, the IP address of the alternate device must be configured using
the
policy overload
redirect command that is part of the service configuration. Note that this option can
not be used in conjunction with GGSN, MME, P-GW,
SAEGW,
or S-GW services.
|
-
reject :
Specifies that the system processes new session request messages and responds
with a reject message.
(For PDSN and
HA, the reply code is 130, "insufficient resources". For the GGSN, the reply code is 199, "no resources
available".)
report-overload { permit-emergency-sessions |
reject-new-sessions | reject-non-emergency-sessions }
enodeb-percentage
percentage
Important |
This set of
keywords is supported only by the MME.
|
Enables the MME to
report overload conditions to eNodeBs and take additional action to alleviate
congestion situations.
permit-emergency-sessions : Specifies that only
emergency sessions are allowed to access the MME during the overload period.
reject-new-sessions : Specifies that all new
sessions destined for the MME will be rejected during the overload period.
reject-non-emergency-sessions : Specifies that all
non-emergency sessions will be rejected during the overload period.
enodeb-percentage percentage : Configures the percentage of known
eNodeBs that will receive the overload report.
percentage
must be an integer from 1 to 100.
Usage Guidelines
Congestion
policies can be configured for each service. When congestion control
functionality is enabled, these policies dictate how services respond should
the system detect that a congestion condition threshold has been crossed.
Example
The following
command configures a congestion control policy of reject for PDSN services:
congestion-control policy pdsn-service action reject
The following command configures a congestion control policy of
reject for MME services:
congestion-control policy mme-service action reject