
Configuring Dial Services
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In this example, two Nortel Networks routers are connected. Router A has only
one phone number in its outgoing phone list for the destination, router B. Router
A calls router B. While they are communicating, router A, the monitor router,
determines that it needs more bandwidth based on the user-defined congestion
thresholds. BAP negotiation then begins as follows:
1.
Router A sends a call request asking for more bandwidth.
2.
Router B, the non-monitor router, checks the router slots to find an available
line. It uses the Preferred and Reserved Bandwidth Slot parameters to
determine which slots to check first. You can set these parameters for a
non-monitor router if the Bandwidth Mode parameter is set to Dynamic
Monitor.
3.
When it finds an available line, router B sends a call response that includes the
local phone number of the available line.
4.
Router A calls the new phone number. Router B then activates the additional
line.
5.
If the lines become congested again, router A repeats the process.
If router B uses all the available phone numbers, and router A sends another call
request for bandwidth, router B can inform router A that there are no available
lines, saving router A the cost of calling to make a connection.
When router A no longer needs the extra bandwidth, it must ask router B to
deactivate the line. Both routers must agree to deactivate the line to prevent one
router from keeping the line active while the other tries to deactivate it.
BAP Negotiation with Non-Nortel Networks Routers
If your Nortel Networks router communicates with another vendor’s router, both
routers may be monitoring congestion, regardless of who initiated the call.
Bandwidth allocation algorithms or congestion thresholds may not always be the
same on both sides of the line. Therefore, both routers must agree to activate or
deactivate the line to prevent one side from keeping the line active while the other
tries to deactivate it.
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