Ethernet Port Configuration Example - 3Com Switch 4500 26-Port Configuration Manual

46 C 2: P O
HAPTER ORT PERATION
Ethernet Port
Configuration Example
Enter the command in Ethernet Port View to check whether the
loopback
Ethernet port works normally. In the process of the loopback test, the port cannot
forward any packets. The loop test will finish automatically after a short time.
Table 43 Displaying and Debugging Ethernet Port
Operation
Perform loopback test on the Ethernet
port.
Display all port information
Display port information of a specific unit display unit unit_id interface
Display hybrid port or trunk port
Display the state of loopback detection on
the port.
Clear statistics information of the port
Note that:
The loopback test cannot be performed on a port disabled by the
■
command. During the loopback test, the system will disable
and operation on the port. Some ports do not support the
mdi shutdown
loopback test. If performing this command in these ports, you will see the
system prompt.
After 802.1X is enabled, the port information cannot be reset.
■
Networking Requirements
Switch A is connected to Switch B through Trunk port Ethernet1/0/1. Configure
the trunk port with a default VLAN ID, so that:
When receiving packets without a VLAN Tag, the port can forward them to the
■
member ports belonging to the default VLAN
When it is sending the packets with VLAN Tag and the packet VLAN ID is the
■
default VLAN ID, the trunk port will remove the packet VLAN Tag and forward
the packet.
Command
loopback { external | internal }
display interface { interface_type |
interface_type interface_num |
interface_nam }
display port { hybrid | trunk }
display loopback-detection
reset counters interface [
interface_type | interface_type
interface_num | interface_name ]
shutdown
, ,
speed duplex