Cisco IOS XE, Configuration Manual

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Configuring ISG Policies for Session Maintenance
Feature Information for Configuring ISG Policies for Session Maintenance
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ISG: Session Protection & Resiliency:
Keepalive–ARP, ICMP Cisco IOS XE
Release 2.2 IP subscriber session keepalive support is configured for
monitoring session data traffic in the upstream direction
for idleness. Address Resolution Protocol (ARP) is used
for Layer 2 connected subscribers. For routed hosts
(Layer 3 connected) subscribers, the protocol defaults to
Internet Control Message Protocol (ICMP). ICMP is also
used in configurations where the access interface does
not support ARP.
The following sections provide information about this
feature:
• Configuring a Session Keepalive on the Router,
page 10
• Configuring a Session Keepalive on a RADIUS
Server, page 12
The following command was introduced: keepalive
[idle period1] [attempts max-retries] [interval period2]
[protocol ICMP [broadcast] | ARP].
ISG: Session: Lifecycle: Packet of Disconnect
(POD) Cisco IOS XE
Release 2.2 An ISG can be configured to interact with external policy
servers. A policy server can use RADIUS Packet of
Disconnect (POD) to manage the life cycle of any ISG
session. The primary role of the POD message is to
terminate an ISG session.
The following sections provide information about this
feature:
•
Session Maintenance Timers, page 2
• How to Configure Policies for Session Maintenance
Timers, page 4
Table 2 Feature Information for ISG Session Maintenance (continued)
Feature Name Releases Feature Configuration Information