Flow Control - Avaya Cajun P550R User Manual

Flow Control

Cajun P550/P880/P882 Switch User Guide
Auto-negotiation attempts to find the greatest common denominator
for the two devices on the link in the following order of preference:
1. 100Base-TX full-duplex
2. 100Base-T4
3. 100Base-TX
4. 10Base-T full-duplex
5. 10Base-T half-duplex
Once the greatest common denominator of settings is determined,
each device equipped with auto-negotiation will configure itself
automatically. In certain cases where automatic configurations are not
desired, auto-negotiation provides a way for these settings to be
overridden manually.
There are three flow control options on 10/100 Ethernet ports:
1. Disable,
2. Enable,
3. Enable with Aggressive Backoff.
There are four flow control options on Gigabit Ethernet Ports.
1. Disable,
2. Enable,
3. Enable – Send Only
4. Enable – Respond Only
The "Disable" option disables flow control (the default).
The "Enable" option enables IEEE802.3X (XOFF/XON) Flow
Control on the line. We are the Sender of pauses based upon
inbound traffic and we are the receiver of pauses based upon
outgoing traffic (and the ability of attached equipment to use the
protocol).
Configuring Port Parameters
5-3