BayStack User Guide

Using the BayStack 350 10/100/1000 Series Switch

1-20

304376-B Rev 00

• Filtering Database Identifier (FID) --- the specific filtering/forwarding

database within the BayStack 350 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 350 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 1-9

, all

incoming packets are assigned to VLAN 1 by the default port VLAN identifier

(PVID =1). Untagged packets enter and leave the switch unchanged.

Figure 1-9. Default VLAN Settings

To configure VLANs, a user can reconfigure the switch ports as tagged or

untagged members of specific VLANs (see Figure 1-10

through Figure 1-13).

Port 1

Data

CRC

Incoming

untagged

packet

BS35010A

Port 2 Port 3 Port 4 Port 5

VLAN 1

802.1Q switch

By default:

Key

All ports are assigned PVID = 1

All ports are untagged members of VLAN 1

PVID = 1

Port 6 Port 7 Port 8

Data

CRC

Outgoing

untagged packet

(unchanged)

kombk.book Page 20 Thursday, February 18, 1999 10:59 AM