Jumboframe Enable; Loopback - 3Com 5500G-EI Command Reference Manual

Ethernet Port Configuration Commands 57
You can use the at this command. This consists of the
interface_name
and the combined as a single parameter. For
interface_type interface_number
example Ethernet1/0/1.
Description
Use the command to enter the
interface_type interface_number
interface
interface of the specified port.
If you want to configure the parameters of an Ethernet port, you must first use
this command to enter the Ethernet port view.
Example
To enter the interface for port "GigabitEthernet1/0/1", enter the following:
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]interface Gigabitethernet1/0/1

jumboframe enable

Syntax
jumboframe enable
undo jumboframe enable
View
Ethernet Port View
Parameter
None.
Description
Use the command to allow jumbo frames to pass through
jumboframe enable
the specified Ethernet port. Use the command to
undo jumboframe enable
prevent jumbo frames from passing through an Ethernet port.
If using the default file, jumbo frame support is disabled on all
3comoscfg.def
ports. When it is enabled, frames between 1522 bytes and 9216 bytes are
permitted.
Example
Allow jumbo frames to pass through Ethernet port 1/0/1.
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]interface Gigabitethernet 1/0/1
[SW5500-GigabitEthernet1/0/1]jumboframe enable

loopback

Syntax
loopback { external | internal }