Loopback; Port Link-Mode - HP 3600 v2 Series Command Reference Manual

loopback

Syntax
loopback { external | internal }
View
Ethernet interface view
Default level
2: System level
Parameters
external: Enables external loopback testing to test all on-chip functions related to Ethernet interfaces.
internal: Enables internal loopback testing to test the hardware of Ethernet interfaces.
Description
Use loopback to enable loopback testing on an Ethernet interface.
By default, loopback testing is disabled on Ethernet interfaces.
Enable loopback testing for troubleshooting purposes, such as identifying an Ethernet problem.
During loopback testing, the port is operating in full duplex mode, regardless of its duplex configuration.
After loopback testing is disabled, the duplex configuration of the port is restored.
Loopback testing is a one-time operation, and is not recorded in the configuration file.
Examples
# Enable internal loopback testing on Ethernet 1/0/1.
<Sysname> system-view
[Sysname] interface ethernet 1/0/1
[Sysname-Ethernet1/0/1] loopback internal
Loop internal succeeded!

port link-mode

Syntax
port link-mode { bridge | route }
undo port link-mode
View
Ethernet interface view
Default level
2: System level
Parameters
bridge: Specifies the Layer 2 mode.
route: Specifies the Layer 3 mode.
Description
Use port link-mode to change the link mode of an Ethernet interface.
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