
Configuring ATM Half-Bridge Services
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300017-A Rev. 00
Configuring Circuitless IP on the Router
To operate AHB, you must configure unnumbered IP interfaces on the router and
assign an associated IP address to each interface. You can elect to use the
circuitless IP address as the associated address for unnumbered interfaces.
AHB uses unnumbered interfaces because not all hosts attached via the ATM
circuit are on the same IP network. Furthermore, a host may change its IP network
over time (due to subscribing with different service providers), and it would be
inconvenient to move the PVC for that host each time its network IP address
changes.
When you configure a circuitless IP interface, note the following:
• You can configure only one circuitless IP interface per router.
• You must assign a unique IP address and subnetwork number to the circuitless
IP interface.
A circuitless IP interface has an IP address that is not mapped to the address of a
specific circuit. Thus, if one or more of the router’s IP interfaces becomes
disabled, this circuitless feature ensures that the router is always reachable using
the circuitless interface address, as long as a viable path to the router exists.
For more information about circuitless interfaces, see Configuring IP Services.
To configure a circuitless IP interface on the router, begin at the Configuration
Manager window and complete the following tasks:
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose
Protocols
.
The Protocols menu opens.
2. Choose
IP
. The IP menu opens.
3. Choose
Circuitless IP
. The Circuitless IP menu opens.
4. Choose
Create
. The IP Configuration window opens.
(continued)
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