Avaya Configuring Dial Services Manual de usuario descargar pdf (Pagina 346)

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Configuring Dial Services

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308621-14.00 Rev 00

Note that when you configure a PPP connection using Site Manager, it creates a

generic PPP line record that all pools use for identification.

To identify remote callers, you enter the caller name and CHAP secret or PAP

password of each remote caller in the caller resolution table. Then, assign a local

demand, primary, or bandwidth circuit to each caller.

The authentication process starts during link negotiation. The remote caller

includes its CHAP name or PAP ID in the CHAP challenge or PAP authenticate

request to the called router. When the called router receives the call, it checks its

caller resolution table for a matching entry. If the remote caller is authorized, the

called router activates the assigned circuit.

For more information about authentication, see Chapter 5, “Implementation Notes

for All Dial Services.”

Caller Resolution for Demand Circuit Groups

The router also uses the caller resolution table for demand circuit groups. Demand

circuit groups can only receive calls. For a demand circuit group to accept an

incoming call, you configure the table and assign the demand circuit group to a

remote caller. After the router authorizes a remote caller, it activates a circuit from

the assigned demand circuit group.

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

for authentication. 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 “PPP Authentication”

on page 5-1

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

unique CHAP name or PAP ID, or the routers 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.

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