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Configuring Dial Services

6-12

117353-B Rev. 00

A circuit group can use more than one demand pool. This enables the router to use

one configuration for circuits across the router’s slots because demand pools

cannot use lines from different slots.

Each demand circuit group has its own ID. This number is distinct from the

demand pool ID that identifies the line pool. Both individual demand circuits and

demand circuit groups can use the same demand pool.

Caller Resolution for Demand Circuit Groups

Like individual demand circuits, demand circuit groups use either PAP or CHAP

to identify who is calling the router and to determine which circuit group to

activate. You can enable either of these authentication protocols on only one side

of the link (one-way authentication) or on both sides of the link (two-way

authentication). For information about authentication, see Chapter 5.

Depending on a network’s security requirements, each remote router can have a

unique CHAP name or PAP ID, or they can use the same name. For each remote

caller using a unique name or ID, you assign a demand circuit group in the caller

resolution table (referred to as the local group in Site Manager). The remote

callers may use the same local group.

When the router authenticates an incoming call, it receives the caller’s name or ID

in the CHAP challenge or PAP authenticate request message. The router verifies

the caller’s identity, then looks up the assigned local group in the table. From this

group, the router selects an available circuit and activates the unnumbered

protocol configuration over that circuit.

To simplify configuration, the caller resolution table may contain the same PAP

ID or CHAP name for all remote routers in the network. In this case, the table has

only one entry consisting of the caller name and the local group.

A router configured with demand circuit groups does not initiate connections for

the group; the remote side of the connection must place the call first.

Consequently, you do not need to configure the CHAP local name and secret or

the PAP ID and password for a call request.

Note:

The caller resolution table cannot contain individual demand circuits

and demand circuit groups for the same caller name.

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Avaya Configuring Dial Services Manual de usuario Pagina 146