H3C S7500E-XS Series, Interface Configuration Manual

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13
Step Command Remarks
2. Enter Ethernet interface
view.
interface interface-type
interface-number
Only 10-GE and 40-GE fiber ports
support this feature.
Copper ports do not support this feature.
3. Forcibly bring up the fiber
port.
port up-mode
By default, a fiber port is not forcibly
brought up, and the physical state of a
fiber port depends on the physical state
of the fibers.
The
port up-mode
command is
mutually exclusive with both the
shutdown
and
loopback
commands.
Configuring a Layer 2 Ethernet interface
Configuring storm suppression
IMPORTANT:
PEXs do not support unknown unicast suppression. For more information about PEXs, see Virtual
Technologies Configuration Guide .
The storm suppression feature ensures that the size of a particular type of traffic (broadcast,
multicast, or unknown unicast traffic) does not exceed the threshold on an interface. When the
broadcast, multicast, or unknown unicast traffic on the interface exceeds this threshold, the system
discards packets until the traffic drops below this threshold.
Any of the storm-constrain , broadcast-suppression , multicast-suppression , and
unicast-suppression commands can suppress storm on an interface. The
broadcast-suppression , multicast-suppression , and unicast-suppression commands suppress
traffic in hardware. They have less impact on the device performance than the storm-constrain
command, which suppresses traffic in software.
Configuration restrictions and guidelines
When you configure storm suppression, follow these restrictions and guidelines:
•
For the same type of traffic, do not configure storm control together with storm suppression.
Otherwise, the traffic suppression result is not determined. For more information about storm
control, see "
Configuring storm control on an Ethernet interface ."
•
When you configure the suppression threshold in kbps, the actual suppression threshold might
be different from the configured one as follows:
{
If the configured value is smaller than 64, the value of 64 takes effect.
{
If the configured value is greater than 64 but not an integer multiple of 64, the integer
multiple of 64 that is greater than and closest to the configured value takes effect.
To determine the suppression threshold that takes effect, see the prompts on the switch.
•
To configure any combination of the unicast-suppression , multicast-suppression , and
broadcast-suppression commands on an interface of this device, set the same parameter for
these commands.
•
To configure the multicast-suppression command together with the broadcast-suppression
command on an PEX physical interface in an IRF 3 system, set the same parameter for both
commands. For example, if the multicast suppression threshold is configured in kbps, the
broadcast suppression threshold must also be configured in kbps.