Configuration Restrictions And Guidelines; Configuration Procedure; Configuring Jumbo Frame Support - HP 6125G Configuration Manual

Configuration restrictions and guidelines

On an interface that is physically down, you can only perform internal loopback testing. On an
•
interface administratively shut down, you can perform neither internal nor external loopback
testing.
You cannot configure the speed, duplex, mdi, or shutdown command on the Ethernet interface
•
during loopback testing.
During loopback testing, the Ethernet interface operates in full duplex mode. When you disable
•
loopback testing, the interface returns to its duplex setting.

Configuration procedure

To enable loopback testing on an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet interface view.
3. Enable loopback testing.
4. Disable loopback testing.

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. With jumbo frame support enabled, the interface can process frames
larger than the standard Ethernet frame size yet within the specified range.
To configure jumbo frame support in interface view:
Step
1. Enter system view.
2. Enter Ethernet
interface view.
3. Configure jumbo
frame support.
Command
system-view
interface interface-type
interface-number
loopback { external | internal }
undo loopback
Command
system-view
interface interface-type
interface-number
jumboframe enable [ value ]
7
Remarks
N/A
N/A
Optional.
Disabled by default.
After loopback testing is complete,
to avoid influence on normal data
packet forwarding, use this
command to disable loopback
testing on the interface.
Remarks
N/A
N/A
By default, the switch allows jumbo frames within
9216 bytes to pass through Ethernet interfaces.
If you set the value argument multiple times, the
latest configuration takes effect.