Alcatel-Lucent 6850-48 网络指南
Configuring Ethernet Ports
Ethernet Ports Overview
OmniSwitch AOS Release 6 Network Configuration Guide
September 2009
page 1-9
Flow Control and Autonegotiation
PAUSE frames are used to pause the flow of traffic between two connected devices when traffic conges-
tion occurs. Flow control provides the ability to configure whether or not the switch will transmit and/or
honor PAUSE frames on an active interface. This feature is supported on standalone OmniSwitch 6400,
OmniSwitch 6850, and OmniSwitch 6855 switch interfaces configured to run in full-duplex mode. An
OmniSwitch chassis-based switch or a stack of switches will honor and process receive PAUSE frames
but do not transmit any such frames.
tion occurs. Flow control provides the ability to configure whether or not the switch will transmit and/or
honor PAUSE frames on an active interface. This feature is supported on standalone OmniSwitch 6400,
OmniSwitch 6850, and OmniSwitch 6855 switch interfaces configured to run in full-duplex mode. An
OmniSwitch chassis-based switch or a stack of switches will honor and process receive PAUSE frames
but do not transmit any such frames.
In addition to configuring flow control settings, this feature also works in conjunction with autonegotia-
tion to determine operational transmit/receive settings for PAUSE frames between two switches. Note that
the operational settings, as shown in the following table, override the configured settings as long as auto-
negotiation and flow control are both enabled for the interface:
tion to determine operational transmit/receive settings for PAUSE frames between two switches. Note that
the operational settings, as shown in the following table, override the configured settings as long as auto-
negotiation and flow control are both enabled for the interface:
If autonegotiation is disabled, the configured flow control settings are applied to the local interface. See
for more information.
Configured
Local Tx
Configured
Local Rx
Configured
Remote Tx
Configured
Remote Rx
Operational
Local Tx
Operational
Local Rx
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
Yes
No
Yes
Yes
Yes
No
No
No
Yes
No
No
Yes
Yes
No
No
No
No
Yes
No
Yes
Yes
No
No
No
Yes
Yes
No
No
Yes
No
No
Yes
No
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
Yes
No
No
No
Yes
No
No
Yes
Yes
No
No
Yes
No
No
No
No