HP FlexNetwork NJ5000, Руководство пользователя

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unnecessary to separate different VLAN members. As shown in Figure 116 , Device A is
connected to common PCs that cannot recognize VLAN tagged-packets, and you must
configure Device A's ports that connect to the PCs as access ports.
•
Trunk port
—A trunk port can carry multiple VLANs to receive and send traffic for them. Except
traffic from the port VLAN ID (PVID), traffic sent through a trunk port will be VLAN tagged.
Usually, ports that connect network devices are configured as trunk ports. As shown in
Figure
116
, Device A and Device B need to transmit packets of VLAN 2 and VLAN 3, and you must
configure the ports interconnecting Device A and Device B as trunk ports and assign them to
VLAN 2 and VLAN 3.
•
Hybrid port
—A hybrid port allows traffic of some VLANs to pass through untagged and traffic of
some other VLANs to pass through tagged. Usually, hybrid ports are configured to connect
devices whose support for VLAN-tagged packets are uncertain. As shown in
Figure 116 , Device
C connects to a small-sized LAN in which some PCs belong to VLAN 2 and other PCs belong to
VLAN 3, and Device B is uncertain about whether Device C supports VLAN-tagged packets.
Configure on Device B the port connecting to Device C as a hybrid port to allow packets of
VLAN 2 and VLAN 3 to pass through untagged.
Figure 116 Port link types
PVID
By default, VLAN 1 is the PVID for all ports. You can change the PVID for a port, as required.
Use the following guidelines when you configure the PVID on a port:
•
An access port can join only one VLAN. The VLAN to which the access port belongs is the PVID
of the port.
•
A trunk or hybrid port can join multiple VLANs, and you can configure a PVID for the port.
•
You can use a nonexistent VLAN as the PVID for a hybrid or trunk port, but not for an access
port. After you delete the VLAN that an access port resides in, the PVID of the port changes to
VLAN 1. However, deleting the VLAN specified as the PVID of a trunk or hybrid port does not
affect the PVID setting on the port.
•
Hewlett Packard Enterprise recommends that you set the same PVID for local and remote
ports.
VLAN 2
VLAN 3
VLAN 2
VLAN 3
Access links are required
Trunk links are reuqired
Hybrid links are required
Device A
Device B Device C