11
•
The
port up-mode
command is mutually exclusive with either of the
shutdown
and
loopback
commands.
•
A GE fiber port cannot correctly forward traffic if you configure the
port up-mode
command on the
port and install any of the following modules into the port:
{
Electro-optical module.
{
100/1000-Mbps transceiver module.
{
100-Mbps transceiver module into the port.
To solve the problem, use the
undo port up-mode
command on the fiber port.
Configuration procedure
To forcibly bring up a fiber port:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Ethernet interface
view.
interface
interface-type
interface-number
N/A
3.
Forcibly bring up the fiber
GE, 10-GE, or 40-GE port.
port up-mode
By default, a fiber Ethernet port is not
forcibly brought up, and the physical state
of a fiber port depends on the physical
state of the fibers.
Configuring a Layer 2 Ethernet interface
Configuring storm suppression
You can use the storm suppression feature to limit the size of a particular type of traffic (broadcast,
multicast, or unknown unicast traffic) 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 a port. The
broadcast-suppression
,
multicast-suppression
, and
unicast-suppression
commands suppress traffic in hardware, and have less impact on device
performance than the
storm-constrain
command, which performs suppression in software.
Configuration guidelines
For the same type of traffic, do not configure the
storm constrain
command together with any of the
broadcast-suppression
,
multicast-suppression
, and
unicast-suppression
commands. Otherwise, the
traffic suppression result is not determined. For more information about the
storm-constrain
command,
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 greater than and closest to the configured value takes effect.