3Com 3.01.01 Switch User Manual


 
32 CHAPTER 2: PORT CONFIGURATION
Adding an Ethernet Port to a VLAN
The following commands are used for adding an Ethernet port to a specified
VLAN. Access ports can be added to only one VLAN, while hybrid and trunk ports
can be added to multiple VLANs.
Perform the following configuration in Ethernet port view.
The access port will be added to an existing VLAN other than VLAN 1. The VLAN
to which a Hybrid port is added must exist. The VLAN to which a Trunk port is
added cannot be VLAN 1.
After adding the Ethernet port to the specified VLANs, the local port can forward
packets from these VLANs. The hybrid and trunk ports can be added to multiple
VLANs, thereby, implementing the VLAN intercommunication between peers. For
the hybrid port, you can tag VLAN packets to process packets in different ways,
depending on the target device.
Setting the Default VLAN ID for an Ethernet Port
An access port can only be included in one VLAN so its default VLAN is the VLAN
to which it belongs.
The hybrid port and the trunk port can be included in several VLANs but a default
VLAN ID must be configured. If the default VLAN ID has been configured, the
packets without a VLAN tag are forwarded to the port that belongs to the default
VLAN. When the system sends packets with a VLAN tag, if the VLAN ID of the
packet is identical to the default VLAN ID of the port, the system will remove the
VLAN tag before sending this packet.
Perform the following configuration in Ethernet port view.
Table 12 Adding an Ethernet Port to Specified VLANs
Operation Command
Add the current access port to a specified
VLAN
port access vlan vlan_id
Add the current hybrid port to specified
VLANs
port hybrid vlan vlan_id_list {tagged |
untagged}
Add the current trunk port to specified VLANs port trunk permit vlan {vlan_id_list | all}
Remove the current access port from to a
specified VLAN.
undo port access vlan
Remove the current hybrid port from to
specified VLANs.
undo port hybrid vlan vlan_id_list
Remove the current trunk port from specified
VLANs.
undo port trunk permit vlan {vlan_id_list |
all}
Table 13 Set the Default VLAN ID for the Ethernet Port
Operation Command
Set the default VLAN ID for the hybrid port. port hybrid pvid vlan vlan_id
Set the default VLAN ID for the trunk port port trunk pvid vlan vlan_id
Restore the default VLAN ID of the hybrid port
to the default value
undo port hybrid pvid
Restore the default VLAN ID of the trunk port
to the default value
undo port trunk pvid