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Configuring ISG Policies for Session Maintenance
Prerequisites for Configuring Policies for Session Maintenance
2
•
Information About Configuring Policies for Session Maintenance, page 2
•
How to Configure Policies for Session Maintenance Timers, page 4
•
Configuration Examples for Session Maintenance Timers, page 14
•
Additional References, page 16
•
Feature Information for Configuring ISG Policies for Session Maintenance, page 18
Prerequisites for Configuring Policies for Session Maintenance
A traffic class is required only if an idle timer or session timer is being installed on a service that has a
traffic class definition in it. If the timer is installed on a session or service that has no traffic class, a
traffic class is not required. See the
“Configuring ISG Subscriber Services”
module for information
about how to configure a traffic class.
Restrictions for Configuring Policies for Session Maintenance
For an idle timeout that is applied on an IP session (rather than on a PPP session), there is currently no
way to specify the direction. By default, the direction in which the idle timer is applied is always
outbound.
ISG supports both per-session and per-flow accounting. Per-session accounting is the aggregate of all
the flow traffic for a session. Per-session accounting can be enabled in a user profile or in a service
profile or service policy map.
Information About Configuring Policies for Session
Maintenance
Before you configure the ISG session maintenance timers, you should understand the following
concepts:
•
Session Maintenance Timers, page 2
•
Benefits of Session Maintenance Timers, page 3
•
Monitoring Sessions, page 3
•
Using ARP for Keepalive Messages, page 3
•
Using ICMP for Keepalive Messages, page 3
Session Maintenance Timers
ISG provides two commands (each of which can be set independently) to maintain control over a session
and its connection. The timeout absolute command controls how long a session can be connected before
it is terminated. The timeout idle command controls how long a connection can be idle before it is
terminated. Both commands detect both PPP and IP sessions and can be applied in a
non-traffic-class-based service, on a per-session basis, or in a flow (traffic-class-based service). All
subscriber traffic will reset the timers; however, non-network traffic such as PPP control packets will not
reset the timers.
Содержание IOS XE
Страница 14: ...About Cisco IOS XE Software Documentation Additional Resources and Documentation Feedback xii ...
Страница 28: ...Using the Command Line Interface in Cisco IOS XE Software Additional Information xiv ...
Страница 36: ...Intelligent Services Gateway Features Roadmap 8 ...
Страница 46: ...Overview of ISG Feature Information for the Overview of ISG 10 ...
Страница 70: ...Configuring ISG Control Policies Feature Information for ISG Control Policies 24 ...
Страница 128: ...Configuring ISG Access for IP Subscriber Sessions Feature Information for ISG Access for IP Subscriber Sessions 44 ...
Страница 136: ...Configuring MQC Support for IP Sessions Feature Information for MQC Support for IP Sessions 8 ...
Страница 194: ...Configuring ISG Policies for Automatic Subscriber Logon Feature Information for ISG Automatic Subscriber Logon 12 ...
Страница 224: ...Configuring ISG Subscriber Services Feature Information for ISG Subscriber Services 20 ...
Страница 336: ...Configuring ISG Integration with SCE Feature Information for Configuring ISG Integration with SCE 16 ...
Страница 344: ...Service Gateway Interface Feature Information for Service Gateway Interface 8 ...