7-6 Frame Relay Module 4.0 User Guide, Rev 01Configuring Bandwidth Allocation GroupsTo optimize frame relay bandwidth use, various types of interfaces can be assigned toone of sixteen Bandwidth Allocation Groups, each defined by the parameters listed inTable 7-1. Bandwidth Allocation Groups can ensure that response time-sensitivetraffic gets access to the available frame relay bandwidth.Each of the following entities that use a frame relay port can be assigned (in thedatabase records) to a Bandwidth Allocation Group:l Node (for use in sessions with a NetView host)l Logical portl SNA Port (LLC2 parameters)l IP interfacel IPX interfacel LLC2 hostl LLC2 interfacel Bridge portFor further control, bandwidth allocation can be enabled or disabled on each framerelay port.This feature is applied only when a line's available bandwidth is limited(i.e., packets must be queued before transmission).Also note that bandwidth allocation is not applied in a frame relaypassthrough configuration (frame relay PVCs into and out of the FRM,internal PVC between the two frame relay ports). (Although the FRM sup-ports bandwidth allocation, routers and FRADs that initiate frame relaypassthrough do not.)Be sure you fully understand the needs of the users of the nodebefore assigning allocation groups; this feature can show adverseeffects if configured incorrectly.Be sure to configure the same DLCI rate control (see page 7-12)and bandwidth allocation values at both ends of a connectionbetween FRM devices. The parameters should be configured tohandle the heavier traffic volume.To configure a Bandwidth Allocation Group, press [H] at the Node ConfigurationMenu (or [A], [A], [H] from the Main Menu). A screen similar to the following will bedisplayed.
