Avaya Configuring Dial Services Manual de usuario Pagina 132

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Configuring Dial Services
5-4 114062 Rev. B
A call is designated for the standby circuit.
The router activates a standby circuit only when the remote router calls the
host router over a standby circuit or you activate the circuit manually.
You activate a standby circuit manually.
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. (Refer to 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.
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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