Administrator Guide

Layer 2 Switching Commands 395
User Guidelines
Dell Networking switches implement receive flow control only. They never
issue a flow control PAUSE frame when congested, but do respect received
flow control PAUSE frames received from other switches. Disabling flow
control causes the switch to ignore received PAUSE frames.
Interface specific configuration overrides any global configuration.
Changing the flow control setting on a copper port restarts auto-negotiation
and causes a brief link-flap while auto-negotiation occurs. Changing the flow
control setting on a fiber port may cause a brief link flap as the PHY is reset.
Enabling flow control on some ports and not others can lead to excessive
packet loss in situations where some ports on the switch have been paused
and the internal packet buffers are consumed. This situation may cause traffic
loss on other ports that are not congested or flow controlled.
Example
console(config)#flowcontrol receive off
console(config)#flowcontrol receive on
interface
Use this command to configure parameters for the gigabit Ethernet and ten-
gigabit Ethernet ports, and for port-channels. While in Global Configuration
mode, enter the interface command (with a specific interface). To exit to
Global Configuration mode, enter exit. To return to Privileged Exec mode,
press Ctrl-Z or enter end.
Additional forms of the interface command enable configuring VLANs, tunnels, the
loopback interface, the out-of-band interface, and ranges of interfaces. See
interface vlan, interface tunnel, arp, and interface range.
Syntax
interface {gigabitethernet unit/slot/port | port-channel port-channel-number
| tengigabitethernet unit/slot/port | fortygigabitethernet unit/slot/port}
Default Configuration
This command has no default configuration.
2CSNXXX_SWUM204.book Page 395 Monday, January 25, 2016 1:25 PM