Configuring Physical State Change Suppression On An Ethernet Interface - H3C S7500E Series Instruction Manual

Step
2. Enter Ethernet interface
view.
3. Configure jumbo frame
support.
Configuring physical state change suppression on an
Ethernet interface
IMPORTANT:
Do not enable this feature on an interface with RRPP, spanning tree protocols, or Smart Link
enabled.
The physical link state of an Ethernet interface is either up or down. Each time the physical link of an
interface comes up or goes down, the interface immediately reports the change to the CPU. The
CPU then performs the following operations:
•
Notifies the upper-layer protocol modules (such as routing and forwarding modules) of the
change for guiding packet forwarding.
•
Automatically generates traps and logs to inform users to take the correct actions.
To prevent frequent physical link flapping from affecting system performance, configure physical
state change suppression. You can configure this feature to suppress only link-down events, only
link-up events, or both. If an event of the specified type still exists when the suppression interval
expires, the system reports the event.
When you configure this feature, follow these guidelines:
•
To suppress only link-down events, configure the link-delay [ msec ] delay-time command.
•
To suppress only link-up events, configure the link-delay [ msec ] delay-time mode up
command.
•
To suppress both link-down and link-up events, configure the link-delay [ msec ] delay-time
mode updown command.
To configure physical state change suppression on an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet
interface view.
3. Configure physical
state change
suppression.
Command
interface interface-type
interface-number
jumboframe enable [ size ]
Command
system-view
interface interface-type
interface-number
link-delay [ msec ]
delay-time [ mode { up |
updown }]
10
Remarks
N/A
By default, an Ethernet interface
allows jumbo frames within 9126
bytes to pass through.
If you set the size argument multiple
times, the most recent configuration
takes effect.
Remarks
N/A
N/A
By default, an Ethernet interface immediately
reports the physical state change to the CPU.