Avaya Configuring Dial Services Manual do Utilizador descarregar pdf (Página 138)

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101

Configuring Dial Services

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117353-B Rev. 00

Typically, circuits at the remote site will be hot standby circuits, while at the

central site, they will be regular standby circuits. Configuring hot standby circuits

for the remote router means that the remote router monitors the status of its

primary connections, which is easier for the remote router than the central router

because there are fewer connections.

Standby circuits support standard demand circuit features such as multilink,

unnumbered interfaces, dial optimized routing, and outbound filtering.

Guidelines for Configuring Standby Circuits

A standby circuit must be configured at the central site and at the remote site. To

configure a standby circuit, you select a demand circuit then set the Standby Mode

parameter to either Hot Standby or Standby. (See Appendix A for parameter

descriptions.)

When setting up a standby circuit, follow these guidelines:

• Configure one side of the connection to initiate calls (the hot standby circuit).

This is the outgoing side of the connection.

• Configure one side of the connection to receive calls (the standby circuit).

This is the incoming side of the connection.

• If you configure routing protocols on the standby circuit, the Inactivity

Timeout parameter does not work. Once the router brings up the standby

circuit, the routing protocols keep the connection active.

• Configure the Time of Day schedules and the failback timers only on the hot

standby side of the connection.

• Use CHAP or PAP as the authentication protocol for the circuit.

• If you want to use unnumbered interfaces, configure them on the outgoing hot

standby circuit, and configure unnumbered demand circuit groups on the

incoming standby circuit.

To configure standby circuits, see Chapter 10.

Note:

If the standby circuit is part of a bandwidth-on-demand configuration,

the outgoing side should be the monitor router, and the incoming side should

be the non-monitor router.

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