Vidipac VSW7242, Руководство пользователя

Страница: 275 / 288

275
NAS : NAS provides port-based authentication, which involves communications between a Supplicant,
Authenticator, and an Authentication Server.
MVRP : Multiple VLAN Registration Protocol (MVRP) allows dynamic registration and deregistration of
VLANs on ports on a VLAN bridged network.
Voice VLAN : Voice VLAN is a VLAN configured specially for voice traffic typically originating from IP
phones.
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.
MSTP : The 802.1s Multiple Spanning Tree protocol (MSTP) uses VLANs to create multiple spanning
trees in a network, which significantly improves network resource utilization while maintaining a
loop-free environment.
Port
The logical port for the settings contained in the same row.
PVID
Shows the VLAN identifier for that port. The allowed values are 1 through 4095 . The default value is 1.
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.
Tx Tag
Shows egress filtering frame status whether tagged or untagged.
UVID