Configuring Jumbo Frame Support; Configuring Physical State Change Suppression On An Ethernet Interface - H3C S12500 Series Interface Configuration Manual

Ethernet interfaces can operate either as Layer 2 (in bridge mode) or Layer 3 Ethernet interfaces (in route
mode). You can set the link mode to bridge or route for an Ethernet interface.
To change the link mode of an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet interface view.
3. Change the link mode of the
Ethernet interface.

Configuring jumbo frame support

An Ethernet interface might receive some frames larger than the standard Ethernet frame size (called
"jumbo frames") during high-throughput data exchanges, such as file transfers. Usually, an Ethernet
interface discards jumbo frames. Jumbo frame support allows the interface to process jumbo frames
within the specified range.
To configure jumbo frame support in interface view:
Step
1. Enter system view.
2. Enter
view.
3. Configure
support.
Configuring physical state change suppression on an Ethernet
interface
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 notifies
the upper-layer protocol modules (such as routing and forwarding modules) of the change for guiding
packet forwarding, and 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.
To configure physical state change suppression on an Ethernet interface:
Command
system-view
Ethernet interface
interface interface-type
interface-number
jumbo frame
jumboframe enable [ value ]
Command
system-view
interface interface-type
interface-number
port link-mode { bridge | route }
4
Remarks
N/A
N/A
The default setting is bridge.
Remarks
N/A
N/A
By default, the device allows jumbo
frames within 9216 bytes to pass
through. On LST1XP16LEB1 and
LST1XP16LEC1 cards, the device
allows jumbo frames within 8168 to
pass through.
If you set the value argument multiple
times, the most recent configuration
takes effect.