3Com Switch 7700 Configuration Manual page 40

32 C 2: P C
HAPTER ORT ONFIGURATION
A port on a switch can be configured as an access port, a hybrid port, or a trunk
port. However, to reconfigure between hybrid and trunk link types, you must first
restore the default, or access link type.
The default link type is the access link type.
Adding the 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.
Table 12 Adding the Ethernet Port to Specified VLANs
Operation
Add the current access port to a specified
VLAN
Add the current hybrid port to specified
VLANs
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.
Remove the current hybrid port from to
specified VLANs.
Remove the current trunk port from specified
VLANs.
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 Ethernet Port
Since the access port can only be included in one VLAN, its default VLAN is the
one to which it belongs. The hybrid port and the trunk port can be included in
several VLANs, however, it is necessary to configure the default VLAN ID. If the
default VLAN ID has been configured, the packets without VLAN Tag will be
forwarded to the port that belongs to the default VLAN. When sending the
packets with VLAN Tag, if the VLAN ID of the packet is identical to the default
VLAN ID of the port, the system will remove VLAN Tag before sending this packet.
Perform the following configuration in Ethernet port view.
Table 13 Set the Default VLAN ID for the Ethernet Port
Operation
Set the default VLAN ID for the hybrid port.
Set the default VLAN ID for the trunk port
Command
port access vlan vlan_id
port hybrid vlan vlan_id_list {tagged |
untagged}
undo port access vlan
undo port hybrid vlan vlan_id_list
undo port trunk permit vlan {vlan_id_list |
all}
Command
port hybrid pvid vlan vlan_id
port trunk pvid vlan vlan_id