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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.
the multiservice interface model.
Figure 3
Acccess interface
Acccess interface
One multiservice interface must be configured for each VPN routing domain.
SUMMARY STEPS
1.
2.
3.
4.
5.
DETAILED STEPS
Command or Action
Step 1
enable
Example:
Router> enable
Step 2
configure terminal
Example:
Router# configure terminal
30
Multiservice Interface Model
Service interface
Default
routing table
enable
configure terminal
interface multiservice interface-number
ip vrf forwarding vrf-name
ip address ip-address mask
ISG
Network interface
Network interface
VPN
routing table
Purpose
Enables privileged EXEC mode.
•
Enter your password if prompted.
Enters global configuration mode.
Configuring ISG Access for IP Subscriber Sessions
Figure 3
illustrates
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