Cisco Cisco Packet Data Interworking Function (PDIF) トラブルシューティングガイド
GGSN Service Configuration Mode Commands
bind ▀
Cisco ASR 5000 Series Command Line Interface Reference ▄
OL-22947-02
Important:
The maximum number of subscriber contexts supported is dependant on the session capacity license
installed and the number of active processing cards installed in the system. A fully loaded ASR 5000 with 13 active
processing cards can support 2,500,000 total PPP PDP contexts. Refer to the license key command for additional
information.
processing cards can support 2,500,000 total PPP PDP contexts. Refer to the license key command for additional
information.
Usage
Used to associate or tie the GGSN service to a specific logical IP address. The logical IP address or interface
takes on the characteristics of a Gn interface. Only one interface can be bound to a service. The interface
should be configured prior to issuing this command.
This command also sets a ―soft‖ limit as to the number of simultaneous subscriber contexts that can be
facilitated by the service/interface at any given time. Soft limits are based on measurements gathered at
regular short intervals (several times per minute) as opposed to measurements taken in real-time. Therefore
the sampled measurement may not match the actual number of PDP contexts currently being processed.
Every PDP context request received is compared against the result of the last sample. If the sample is less
than the soft limit configured, the request will be processed. If it is more, the request will be rejected.
When configuring the
takes on the characteristics of a Gn interface. Only one interface can be bound to a service. The interface
should be configured prior to issuing this command.
This command also sets a ―soft‖ limit as to the number of simultaneous subscriber contexts that can be
facilitated by the service/interface at any given time. Soft limits are based on measurements gathered at
regular short intervals (several times per minute) as opposed to measurements taken in real-time. Therefore
the sampled measurement may not match the actual number of PDP contexts currently being processed.
Every PDP context request received is compared against the result of the last sample. If the sample is less
than the soft limit configured, the request will be processed. If it is more, the request will be rejected.
When configuring the
or
options, be sure to
consider the following:
Each PPP PDP context is treated as two IP PDP contexts due to the additional CPU and memory
resources required
The total number of interfaces that you configure for use as Gn interfaces
The maximum number of subscriber PDP contexts that all of the interfaces may handle during peak
busy hours
The average bandwidth for each of the PDP contexts
The type of physical port (10/100Base-T or 1000Base-Tx) to which these interfaces are bound
Taking these factors into account and distributing your subscriber contexts across all available interfaces
allows you to configure your interfaces to optimally handle PDP contexts without degraded performance.
allows you to configure your interfaces to optimally handle PDP contexts without degraded performance.
Example
The following command would bind the logical IP interface with the address of 192.168.3.1 to the GGSN service and
specifies that a maximum of 600 simultaneous subscriber sessions can be facilitated by the interface/service at any given
time:
The following command would bind the logical IP interface with the address of 192.168.3.1 to the GGSN service and
specifies that a maximum of 600 simultaneous subscriber sessions can be facilitated by the interface/service at any given
time:
The following command disables a binding that was previously configured: