Allied-telesis AT-S41 Manual do Utilizador descarregar pdf (Página 94)

AT-S41 User’s Guide

A VLAN that contains only tagged frames or that contains a combination

of tagged and untagged ports is referred to as a tagged VLAN. And, as

explained previously, any device that you connect to a tagged port of a

tagged VLAN must be IEEE 802.1Q-compliant.

General Rules

to Creating a

VLAN

Below are general rules to observe when creating a VLAN.

❑ An AT-8350GB switch can support up to256 port-based and

tagged VLANS.

❑ Each VLAN must be assigned a unique VID. However, if a particular

VLAN spans multiples AT-8350GB stacks, each part of the VLAN on

the different stacks must be assigned the same VID.

❑ A port can be an untagged member of only one VLAN at a time.

❑ A port can be a tagged member of multiple VLANs.

❑ You must assign each untagged port a PVID. The PVID of an

untagged port must match the VLAN’s VID. You must assign this

value manually when you create the VLAN.

❑ A port-based VLAN that spans multiple stacks requires a port on

each stack where the VLAN is located to function as a connection

between the various parts of the VLAN reside.

❑ If there are end nodes in different VLANs that need to

communicate with each other, a router or Layer 3 switch is

required to connect the VLANs.

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