Configuring Demand Routing for Primary ISDN Modules
Using Demand Routing for ISDN Connections
8-50
After the packet has been sent to the demand interface, the router checks the
fields in the packet's IP header (such as source and destination address)
against the match-interesting list ACL. If the packet does not match the list,
the router drops it. If the packet does match, the demand interface checks its
resource pools.
The demand interface searches for the first available interface in its resource
pool. In this example, the first resource in resource pool Pool1 is ISDN group
1. Within the ISDN group, the first interface is BRI 2/1. If the BRI 2/1 interface
is available, the demand interface begins checking its connect sequences for
one that matches with the BRI interface resource.
If a connect sequence is found that permits the demand interface to use the
BRI resource interface, the demand interface next checks the connect mode
configuration.
If the connect mode is set to the originate or either options, the demand
interface places a call through the BRI resource interface. If the call connects,
the demand interface can then forward the packet through the BRI interface
toward its destination.
MLPPP: Increasing Bandwidth
If you are configuring demand routing for a primary BRI interface, you can
aggregate multiple B channels to increase bandwidth. Specifically, you use
multilink PPP (MLPPP) to aggregate the multiple channels. To configure
MLPPP for BRI interfaces, you must:
1.
Enable MLPPP for incoming calls.
2.
Enable MLPPP for the demand interface that is managing the BRI inter-
faces that you want to aggregate.
3.
Configure the minimum and maximum channels for the ISDN group.
Configuring MLPPP for Incoming Calls
To enable the negotiation of MLPPP for incoming calls, enter the following
command from the global configuration mode context:
ProCurve(config)# data-call multilink
To disable MLPPP for incoming calls, enter:
ProCurve(config)# no data-call multilink
By default, MLPPP is disabled for incoming calls.
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