Ethernet Port Troubleshooting; Link Aggregation Configuration; Overview - 3Com Switch 4500 26-Port Configuration Manual

Ethernet Port
Troubleshooting
Link Aggregation
Configuration

Overview

Networking Diagram
Figure 12 Configuring the Default VLAN for a Trunk Port
Switch A
Configuration Procedure
The following configurations are used for Switch A. Configure Switch B in the
similar way.
1 Enter the Ethernet Port View of Ethernet1/0/1.
[4500]interface ethernet1/0/1
2 Set the Ethernet1/0/1 as a trunk port and allow VLAN 2, 6 through 50, and 100 to
pass through.
[4500-Ethernet1/0/1]port link-type trunk
[4500-Ethernet1/0/1]port trunk permit vlan 2 6 to 50 100
3 Create the VLAN 100.
[4500]vlan 100
4 Configure the default VLAN ID of Ethernet1/0/1 as 100.
[4500-Ethernet1/0/1]port trunk pvid vlan 100
Fault: Default VLAN ID configuration failed.
Troubleshooting: Take the following steps.
1 Use the
display interface
trunk port or a hybrid port. If it is neither, configure it as a trunk port or a hybrid
port.
2 Configure the default VLAN ID.
Brief Introduction to Link Aggregation
Link aggregation means aggregating several ports together to implement the
outgoing/incoming payload balance among the member ports and enhance the
connection reliability. Link aggregation includes manual aggregation, dynamic
LACP aggregation, and static LACP aggregation. In terms of load sharing, link
aggregation may be load sharing aggregation and non-load sharing aggregation.
For the member ports in an aggregation group, their basic configurations must be
the same. That is, if one is a trunk port, the others must also be; when it turns into
access port, then others must change to access port.

Link Aggregation Configuration

Switch B
or command to check if the port is a
display port
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