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C H A P T E R 7 Virtual LANs (VLANs)
105
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
Each VLAN is given a name that can be up to 32 alphanumeric
characters.
VLAN names normally begin with an alphabetical letter. Use
quotation marks to enclose a VLAN name that does not begin with
an alphabetical character, or that includes a space, comma, or other
special character. For example:-
Use VLAN names
consistently across your
entire network.
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.
Table 7.1:
Correct Incorrect
vlanmarketing2
“2ndvlangroup”
“vlan marketing”
2ndvlangroup
vlan marketing