User guide
6-12 E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
V
IRTUAL
LAN
S
(VLAN
S
)
D
ELETING
A
P
ROTOCOL
F
ILTER
If a protocol filter is deleted from a VLAN, the VLAN is assigned a protocol filter of
none
. You can continue to configure the VLAN. However, no traffic is forwarded to the
VLAN until a protocol is assigned to it.
P
RECEDENCE
OF
T
AGGED
P
ACKETS
O
VER
P
ROTOCOL
F
ILTERS
If a VLAN is configured to accept tagged packets on a particular port, incoming packets
that match the tag configuration take precedence over any protocol filters associated
with the VLAN.
VLAN N
AMES
Each VLAN is given a name that can be up to 32 characters. VLAN names can use
standard alphanumeric characters. The following characters are not permitted in a
VLAN name:
• Space
• Comma
• Quotation mark
VLAN names must begin with an alphabetical letter. Quotation marks can be used to
enclose a VLAN name that does not begin with an alphabetical character, or that
contains a space, comma, or other special character.
VLAN names are locally significant. That is, VLAN names used on one switch are only
meaningful to that switch. If another switch is connected to it, the VLAN names have
no significance to the other switch.
You should use VLAN names consistently across your entire network.
D
EFAULT
VLAN
The switch ships with one default VLAN that has the following properties:
• The VLAN name is default.
• It contains all the ports on a new or initialized switch.
• The default VLAN is untagged on all ports. It has an internal VLANid of 1.