Backpressure (flow control)
When packets are passed from 100Mbps segments to 10Mbps segments the flow is restricted due to the lesser capacity of the 10Mbps segment causing backpressure and resulting in dropped packets. With flow control or backpressure enabled, packets are made to wait until the flow is unrestricted before being sent, reducing the number of dropped packets.
Installing a Bridge Module
Power down the 10/100 Managed Hub before installing a bridge module. Bridge modules have both hardware and software configuration settings. The hardware configurations must be made before you physically install the module and the software configurations must be made using a master hub, after the module is installed and before the bridging functions take effect. Please read this section carefully before installing modules.
IMPORTANT:
•These modules are not hot swappable. You must remove power from the hub before installing or replacing a bridge module.
•You should enable the internal bridge on only one bridge module when you have multiple bridge modules installed in a 10/100 Managed Hub. This prevents a network loop condition.
•Three bridge modules are shipped with the Internal Bridge function enabled
To install these modules, perform the following steps. Use static sensitive precautions.
1.Set the bridge function and backpressure function by moving the appropriate jumpers. See the following sections for the bridge module model that you are installing and set the jumpers accordingly.
