Dell PowerConnect 55xx Systems User Guide 471
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Maintenance Projects\Dell
Contax\CxUGSwitching_VLAN.fm
DELL CONFIDENTIAL – PRELIMINARY 9/11/12 - FOR PROOF ONLY
Ingress filtering is always enabled on Trunk-mode ports. Incoming frames
will undergo ingress filtering, and if correctly tagged, (tagged with a VID of
one of the VLANs to which the port currently belongs) are admitted.
The default PVID is 1 (the default VLAN). If another VID is configured as
the port’s PVID, and the corresponding VLAN is deleted from the port or
from the system, the port’s PVID reverts to 1, meaning that the port is
made a member of the default VLAN.
Setting a trunk-port’s PVID to 4095 limits traffic to tagged frames.
Incoming untagged frames are silently discarded, and no frames are sent
untagged.
Trunk-mode ports are intended for switch-to-switch links, where traffic is
usually tagged.
• General Ports
Ports set to General mode may be members of multiple VLANs. Each of
these VLANs may be configured to be tagged or untagged. This setting
applies to transmitted frames. Incoming untagged frames are classified
into the VLAN whose VID is the currently configured PVID.
Ingress filtering may be disabled on General ports. Ingress filtering is
enabled by default.
• Promiscuous Ports
A promiscuous port can communicate with all ports of the same Private
VLAN (PVLAN), including the isolated ports of the same PVLAN.
•Isolated
An isolated port has complete Layer 2 isolation from the other ports within
the same PVLAN, but not from the promiscuous ports. Isolated ports can
communicate with promiscuous ports.
In the factory default configuration, all ports are designated as Access ports,
and are associated with the default VLAN.
To Next Page
Loading...
