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CHAPTER 4: VLAN MANAGEMENT
FIGURE 4-4. VLAN PORT STATUS
Parameter description:
VLAN USER: VLAN User module uses services of the VLAN management functionality to configure VLAN memberships and VLAN
port configuration such as PVID, UVID. Currently, we support the following VLAN User types:
– NAS: NAS provides port-based authentication, which involves communications between a Supplicant, Authenticator, and an
Authentication Server.
– GVRP: Adjacent VLAN-aware devices can exchange VLAN information with each other by using Generic VLAN Registration
Protocol (GVRP). GVRP is based on the Generic Attribute Registration Protocol (GARP) and propagates VLAN information
throughout a bridged network.
– MVR: MVR is used to eliminate the need to duplicate multicast traffic for subscribers in each VLAN. Multicast traffic for all
channels is sent only on a single (multicast) VLAN.
– Voice VLAN: Voice VLAN is a VLAN configured specially for voice traffic typically originating from IP phones.
– MSTP: The 802.1s Multiple Spanning Tree protocol (MSTP) uses VLANs to create multiple spanning trees in a network, which
significantly improves network resource use while maintaining a loop-free environment.
– DMS: Shows DMS VLAN membership status.
– VCL: shows MAC-based VLAN entries configured by various MAC-based VLAN users.
Port: The logical port for the settings contained in the same row.
Port Type: Shows the Port Type. Port type can be any of Unaware, C-port, S-port, Custom S-port.
If Port Type is Unaware, all frames are classified to the Port VLAN ID and tags are not removed. C-port is Customer Port. S-port is
Service port. Custom S-port is S-port with Custom TPID.
Ingress Filtering: Shows the ingress filtering on a port. This parameter affects VLAN ingress processing. If ingress filtering is enabled
and the ingress port is not a member of the classified VLAN, the frame is discarded.
Frame Type: Shows whether the port accepts all frames or only tagged frames. This parameter affects VLAN ingress processing. If
the port only accepts tagged frames, untagged frames received on that port are discarded.
Port VLAN ID: Shows the Port VLAN ID (PVID) that a given user wants the port to have. The field is empty if not overridden by the
selected user.
Tx Tag: Shows egress filtering frame status whether tagged or untagged.
Untagged VLAN ID: If Tx Tag is overridden by the selected user and is set to Tag or Untag UVID, then this field will show the VLAN ID
the user wants to tag or untag on egress. The field is empty if not overridden by the selected user.