580 Configuring VLANs
Default VLAN Behavior
One VLAN exists on the PowerConnect 7000 Series switches by default. The
VLAN ID is 1, and all ports are included in the VLAN as access ports, which
are untagged. This means when a device connects to any port on the switch,
the port forwards the packets without inserting a VLAN tag. If a device sends
a tagged frame to a port, the frame is dropped. Since all ports are members of
this VLAN, all ports are in the same broadcast domain and receive all
broadcast and multicast traffic received on any port.
When you add a new VLAN to the VLAN database, no ports are members.
The configurable VLAN range is 2–4093. VLAN 4094 and 4095 are reserved.
VLAN 4095 is designated as the
Discard VLAN.
Setting an access port PVID
to 4095 will effectively shut the port down because frames are not forwarded
in either direction.
Ports in trunk and access mode have the default behavior shown in Table 21-2
and cannot be configured with different tagging or ingress filtering values.
When you add a VLAN to a port in general mode, the VLAN has the behavior
shown in Table 21-3.
Table 21-3. General mode Default Settings
Feature Default Value
Frames accepted Untagged
Incoming untagged frames are classified into the VLAN
whose VLAN ID is the currently configured PVID.
Frames sent Untagged
Ingress Filtering On
PVID 1
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