Layer 2 Switching Commands
388
User Guidelines
Dell EMC Networking switches implement receive flow control only. They
never issue a flow control PAUSE frame when congested, but will 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 will restart auto-
negotiation and cause 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. See
http://www.ieee802.org/3/cm_study/public/september04/thaler_3_0904.pdf
for more information.
Example
The following example enables Gigabit port 2 on stack member 1 for
configuration.
console(config)# interface gigabitethernet 1/0/2
interface range
Use the
interface range
command in Global Configuration mode to execute a
command on multiple ports at the same time.
NOTE:
An additional form of this command enables configuring a range of VLANs.
See
Syntax
interface range
{interface-range-specifier | interface-type
all
}
• port-range—A list of valid ports to configure. Separate non-consecutive
ports with a comma and no spaces; use a hyphen to designate a range of
ports. For more detailed information, see
entered by the user to choose an individual value or range of values for the
specific command. Command line parameters are not syntax or range
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