
114062 Rev. A
12-1
Chapter 12
Configuring Caller Resolution
All three dial services use a PPP identification mechanism to determine who is
calling the router. PPP performs this identification process using one of two
authentication protocols -- CHAP or PAP. For the dial connection, you must
configure CHAP names or PAP IDs to implement the mechanism that identifies
the calling party.
You enter CHAP names or PAP IDs in a caller resolution table and associate each
name or ID with a demand, primary, or bandwidth circuit.
When a router places a call using CHAP or PAP, it includes its own local CHAP
name or PAP ID during negotiation with the called router. The called router then
looks up the name or ID in its caller resolution table to verify the caller and bring
up the correct circuit.
Note:
You must configure CHAP or PAP in the PPP interface configuration
before setting up a caller resolution table. For more information, refer to
Configuring PPP Services.
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