Flow-Control - Cisco ASR 9000 Series Command Reference Manual

Ethernet Interface Commands on the Cisco ASR 9000 Series Router

flow-control

To enable the sending of flow-control pause frames, use the flow-control command in interface configuration
mode. To disable flow control, use the no form of this command.
flow-control {bidirectional| egress| ingress}
no flow-control ingress {bidirectional| egress| ingress}
Syntax Description
bidirectional
egress
ingress
Command Default
If autonegotiate is enabled on the interface, then the default is negotiated.
If autonegotiate is disabled on the interface, then the sending of flow-control pause frames is disabled for both
egress and ingress traffic.
Command Modes
Interface configuration
Command History
Release
Release 3.7.2
Release 4.2.3
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
When you explicitly enable the sending of flow-control pause frames, the value you configured with the
Note
flow-control command overrides any autonegotiated value. This prevents a link from coming up if the
value you set with the flow-control command conflicts with the allowable settings on the other end of
the connection.
Enables flow-control for egress and ingress direction.
Pauses egress traffic if IEEE 802.3x PAUSE frames are received.
Sends IEEE 802.3x PAUSE frames in case of congestion with ingress traffic.
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Modification
This command was first introduced.
This command was supported on 1 Gigabit Ethernet optical and
copper SFPs.

flow-control

Release 5.3.x
83