CLI Guide

Version Description
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.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
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 frames.
Syntax
flowcontrol rx {off | on} tx {off | on} [negotiate | pause-
threshold value | resume-offset value]
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.
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Interfaces