Avaya Business Policy Switch 2000 Management Software Operations Software Version 2.0 Manual de usuario descargar pdf (Pagina 142)

142 Chapter 6 Creating and managing multiple STGs

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— Although ports can be added to or deleted from the Default STG, the

Default STG itself cannot be deleted from the system.

• All other STGs must be created by the user.

• An STG cannot be deleted until you disable it. Additionally, you cannot delete

an STG while it contains VLAN members, so you must first delete the

VLANs from the STG.

• The ports associated with a VLAN and VLANs themselves must be contained

within a single STG.

• When a VLAN spans multiple switches, the VLAN must be within the same

spanning tree group (have the STG ID) across all the switches.

• When a VLAN is assigned to an STG, all ports belonging to that VLAN

automatically join the STG. And, all VLANs in the same shared database

(SVL) must be assigned to the same STG.

• All members of a particular MultiLink Trunking (MLT) group must be

assigned to the same STG.

• Tagged ports can belong to more than one STG, but untagged ports can

belong to only one STG.

— When a tagged port belongs to more than one STG, the egress BPDUs are

tagged to distinguish the BPDUs of one STG from those of another STG.

BPDUs from STG 1 (the Default STG) are untagged.

— Because some STP-compliant devices do not support tagging, you can

configure whether to send tagged or untagged BPDUs, even from tagged

ports, with the BPS 2000 with software version 1.2. The VLAN ID for the

tagged BPDUs will be 4000+STG ID.

Configuring STGs

This section contains the following procedures:

• “Viewing STG configuration‚” next

• “Creating an STG” on page 144

• “Adding a VLAN to an STG” on page 146

Note: You cannot remove VLAN 1 from spanning tree

group (STG) 1.

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Avaya Business Policy Switch 2000 Management Software Operations Software Version 2.0 Manual de usuario Pagina 142