Users Guide

Version Description
8.3.7.0 Introduced on the S4810.
Usage
Information
This command is not applicable for 10–Gigabit and 40–Gigabit Ethernet interfaces.
For 100-Gigabit Ethernet interfaces, CR4 auto-negotiation is enabled by default. You cannot enable or
disable FEC separately. To enable or disable FEC, disable CR4 auto-negotiation first. Similarly, CR4 auto-
negotiation cannot be enabled if FEC is already enabled or disabled. To enable CR4 auto-negotiation, set
to default FEC value using the fec default command.
For 25–Gigabit and 50–Gigabit Ethernet interfaces, FEC is disabled by default. You can enable or disable
FEC and CR4 auto-negotiation simultaneously.
Related
Commands
fec default — sets the FEC to default value.show config — displays the interface configuration.
flowcontrol
Control how the system responds to and generates 802.3x pause flow control frames.
Syntax
flowcontrol {rx {off | on} tx {off | on} [negotiate | pause-threshold value
| resume-offset value] | [monitor session-ID]}
To return to the default, use the no form of this command.
Parameters
rx on Enter the keywords rx on to process the received flow control frames on this
port.
rx off Enter the keywords rx off to ignore the received flow control frames on this
port.
tx on Enter the keywords tx on to send control frames from this port to the connected
device when a higher rate of traffic is received.
tx off Enter the keywords tx off so that flow control frames are not sent from this
port to the connected device when a higher rate of traffic is received.
pause-threshold Enter the buffer threshold limit for generating PAUSE frames.
resume-offset Enter the offset value for generating PAUSE frames to resume traffic.
negotiate (Optional) Enter the keyword negotiate to enable the pause-negotiation with
the egress port of the peer device. If the negotiate command is not used,
pause-negotiation is disabled. 40-gigabit Ethernet interfaces do not support pause-
negotiation
monitor Enter the keyword monitor then the session-ID to enable mirror flow control
frames on the interface. The range is from 0 to 65535.
Defaults rx off tx off
Command Modes INTERFACE
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.11(0.0) Added support for monitor session.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
Interfaces 553