Cisco IOS XE Intelligent Services User Manual

Configuring ISG Access for IP Subscriber Sessions
How to Configure ISG for IP Subscriber Sessions
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interface multiservice 2
ip vrf forwarding VRF_A
Multiservice Interface Model
For a subscriber without a static VPN configuration, a multiservice interface must be configured on the
ISG device to map the IP session to a VRF. The multiservice interface represents a boundary between a
VPN routing domain and the default routing domain. In cases where an IP subscriber may be associated
with several routing domains throughout the duration of a connection, multiservice interfaces serve as
demarcation points for the IP subscriber to switch from one VPN domain to another. Figure 3 illustrates
the multiservice interface model.
Figure 3 Multiservice Interface Model
One multiservice interface must be configured for each VPN routing domain.
SUMMARY STEPS
1. enable
2. configure terminal
3. interface multiservice interface-number
4. ip vrf forwarding vrf-name
5. ip address ip-address mask
DETAILED STEPS
Default
routing table
VPN
routing table
Service interface
ISG
230026
Acccess interface Network interface
Acccess interface Network interface
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.

Cisco IOS XE Intelligent Services Specifications

General

Brand	Cisco
Model	IOS XE Intelligent Services
Category	Gateway
Language	English