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VLAN Names
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For more information on SNAP for Ethernet protocol types, see
TR 11802-5:1997 (ISO/IEC) [ANSI/IEEE std. 802.1H, 1997 Edition].
Deleting a Protocol Filter
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.
Precedence of Tagged
Packets Over Protocol
Filters
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 Names
The switch supports up to 256 different VLANs. 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.
Default 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.