Nortel Networks 24T manual Default Vlan Settings

Using the BayStack 410-24T 10BASE-T Switch

•Filtering database identifier (FID) -- the specific filtering/forwarding database within the BayStack 410-24T switch that is assigned to each VLAN. The current version of software assigns all VLANs to the same FID. This is referred to as Shared VLAN Learning in the IEEE 802.1Q specification.

The default configuration settings for BayStack 410-24T switches have all ports set as untagged members of VLAN 1 with all ports configured as PVID = 1. Every VLAN is assigned a unique VLAN identifier (VID) which distinguishes it from all other VLANs. In the default configuration example shown in Figure 1-16, all incoming packets are assigned to VLAN 1 by the default port VLAN identifier (PVID =1). Untagged packets enter and leave the switch unchanged.

802.1Q Switch

			VLAN 1
Port 1	Port 2	Port 3	Port 4	Port 5	Port 6	Port 7	Port 8
PVID = 1

DA

SA

Incoming

untagged Data packet

CRC

Key

CRC

Outgoing Data untagged packet

(unchanged) SA

DA

By default:

All ports are assigned PVID = 1

All ports are untagged members of VLAN 1

BS41015A

Figure 1-16. Default VLAN Settings

When configuring VLANs, you configure the switch ports as tagged or untagged members of specific VLANs (see Figures 1-17 to 1-20).

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