5
{
Forwards jumbo frames within the specified length.
{
Discards jumbo frames exceeding the specified length without further processing.
To configure jumbo frame support in interface view:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Ethernet interface
view.
interface
interface-type
interface-number
N/A
3.
Configure jumbo frame
support.
jumboframe enable
[
value
]
By default, the device allows jumbo
frames within 10000 bytes to pass
through all Ethernet interfaces.
Configuring physical state change suppression on an Ethernet
interface
IMPORTANT:
Do not configure physical state change suppression on an Ethernet interface with MSTP, or Smart Link
enabled.
The physical link state of an Ethernet interface is either up or down. Each time the physical link of a port
goes up or comes 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, informing the user to take corresponding actions.
To prevent frequent physical link flapping from affecting system performance, configure physical state
change suppression to suppress the reporting of physical link state changes. The system reports physical
layer changes only when the suppression interval expires.
When you configure this feature, follow these guidelines:
•
To suppress only link-down events, configure the
link-delay
delay-time
command.
•
To suppress only link-up events, configure the
link-delay
delay-time
mode up
command.
•
To suppress both link-down and link-up events, configure the
link-delay
delay-time
mode updown
command.
To configure physical state change suppression on an Ethernet interface:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Ethernet
interface view.
interface
interface-type
interface-number
N/A