| |
The Bandwidth Allocation Control Protocol and the Multilink Protocol are used in conjunction with each other. The Bandwidth Allocation Control Protocol and the Multilink Protocol enable you to use multiple physical ports on your WAN boards to represent a single logical link to one location. When the bandwidth threshold of one port is reached, the bandwidth of the next port becomes available. More ports are added to the connection if bandwidth requirements continue to increase beyond the threshold of the ports currently in use. This feature greatly increases the total available bandwidth.
To configure the Bandwidth Allocation Control Protocol and the Multilink Protocol, complete the following steps:
Load NIASCFG, then select the following parameter path:
Select Configure NIAS > Protocols and Routing > Network Interfaces
Select or create a PPP WAN interface.
Select Local Telephone Number and enter the local (inbound) telephone number of this interface.
Press Esc and save your changes.
Select WAN Call Directory .
The Configured WAN Call Destinations screen is displayed.
Select the appropriate PPP destination.
Select Multilink Configuration .
The PPP Multilink Protocol Configuration menu is displayed.
Configure the Total Member Links parameter.
This parameter represents the maximum number of physical WAN ports you want to make available for use in the multilink connection. You can use up to 32 ports.
Configure the following parameters as needed.
To bring up additional ports as needed, set Member Link Activation Type to Bandwidth-On-Demand. To have all available ports active at the same time, set Member Link Activation Type to Static.
When the Member Link Activation Type parameter is set to Bandwidth-On-Demand , you must configure the next two parameters to specify the bandwidth utilization that causes the next port to be added to the WAN connection and the time period that is used to calculate the utilization percentage.
To configure the percentage aggregate utilization for the connection that must be exceeded to activate an additional port, set Bandwidth Threshold Level to the desired value.
The default is 80%.
To configure the time in seconds that will be used to compute the real-time bandwidth utilization, set Bandwidth Measurement Time to the desired value.
The default is 30 seconds.
To use a single interface as a secondary interface, set Interface Selection to Interface. To use multiple interfaces as a secondary interface, set Interface Selection to Group Interface.
To specify which interface or interface group will be used as a secondary interface when the bandwidth threshold of the primary interface is exceeded, select Interface/Group Name.
When this field is selected, a list of configured interfaces and groups from which to choose is displayed.
To specify the outbound phone numbers that will be used to establish secondary links, select Phone Number Configuration.
If the media type is ISDN, one phone number can be used for multiple calls.
Press Esc .
If needed, configure Call Retry Options as described in How to Configure WAN Call Retry and Timeout Parameters.
Press Esc to return to the Internetworking Configuration menu; save your changes when prompted.
If you want these changes to take effect immediately, select Reinitialize System .
If you want to configure other parameters, do so now, then reinitialize the system when you are finished.
| |