Timer Values And Recommendations - Cisco ASR 5000 Series Administration Manual

Mobile-IP and Proxy-MIP Timer Considerations

Timer Values and Recommendations

The following table shows values that would be populated under a number of different configured scenarios.
Table 16.
Scenario
Mobile Sub. MIP Lifetime
APN Template Timeout Source Context Default Sub-
Source Context Default Sub-Source Context Default
Sub-Absolute
APN Template Timeout Source Context Default Sub-
Source Context Default Sub-Source Context Default
Sub-Idle
FA-Service Advertise Reg-Lifetime
Mobile Sub. Profile AAA Context Timeout idle
HA-Service MIP Lifetime
Agent Advertisement Reg-Lifetime
Mobile Sub. MIP RRQ requested lifetime
FA MIP RRP Lifetime
FA MIP RRP
Based on the table above, the recommended guidelines are as follows:
If you are going to use timeout idle settings for subscribers/APNs/APNs, it is recommended that you configure
the timeout idle parameter in the source context default subscriber to a value that is less than or equal to the
lowest timeout idle for any subscriber/APN/APN.
If you are going to use timeout absolute settings for subscribers/APNs/APNs, it is recommended that you
configure the timeout absolute in the source context default subscriber to a value that is less than or equal to the
lowest timeout idle for any subscriber/APN/APN.
The FA-service advertise reg-lifetime parameter should be configured to a value less than the source context
default subscriber in non-3GPP networks and APN timeout idle parameter for 3GPP networks.
The FA-service advertise reg-lifetime parameter should be configured to a value less than the source context
default subscriber in non-3GPP networks and APN timeout idle parameter for 3GPP networks.
Failure to follow these recommendations could result in lifetime too long failures when the FA processes the subscriber
profileAPN template and finds an idle timeout that is less than the proposed MIP lifetime in the mobile RRQ.
OL-22944-02
Sample Call Flow Timer Scenarios
1 2 3
600 600 600
300 300 300
300 300 300
400 400 400
500 500 500
400 400 400
295 295 295
295 295 295
295 295 295
success success success
Cisco ASR 5000 Series Gateway GPRS Support Node Administration Guide ▄
Timer Values and Recommendations ▀
4 5 6
600 600 600
300 300 300
300 300 300
400 400 400
500 500 500
400 400 400
295 295 295
295 295 295
295 295 295
success success success
7
600
300
300
400
500
400
295
295
295
Lifetime
too long