Troubleshooting Ethernet Port Configuration - 3Com 7757 Configuration Manual

Troubleshooting
Ethernet Port
Configuration
Network diagram
Figure 50 Network diagram for Ethernet port configuration
Eth2/0/1
Switch A
Configuration procedure
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Only the configuration for Switch A is listed below. The configuration for
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Switch B is similar to that of Switch A.
This example supposes that VLAN 2, VLAN 6 through VLAN 50 and VLAN 100
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have been created.
# Enter Ethernet port view of Ethernet2/0/1.
<SW7750> system-view
System View: return to User View with Ctrl+Z.
[SW7750] interface ethernet2/0/1
# Set Ethernet2/0/1 as a trunk port.
[SW7750-Ethernet2/0/1] port link-type trunk
# Allow packets of VLAN 2, VLAN 6 through VLAN 50 and VLAN 100 to pass
Ethernet2/0/1.
[SW7750-Ethernet2/0/1] port trunk permit vlan 2 6 to 50 100
# Configure the default VLAN ID of Ethernet2/0/1 to 100.
[SW7750-Ethernet2/0/1] port trunk pvid vlan 100
Symptom: Fail to configure the default VLAN ID of a port.
Solution: Take the following steps.
Use the display interface or display port command to check if the port is a
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trunk port or a hybrid port. If not, configure it to a trunk port or a hybrid port.
Configure the default VLAN ID.
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Troubleshooting Ethernet Port Configuration

Eth2/0/1
Switch B
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