Vlan Ports; Port-Based Vlans - Nortel 8300 User Manual

18 VLANs, Spanning Tree, and Static Link Aggregation
The ERS 8300 supports port-based VLANs and policy-based VLANs.
This section includes the following topics:
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VLAN ports

A Virtual LAN is made up of a group of ports that define a logical broadcast
domain. These ports can belong to a single switch, or they can be spread
across multiple switches. In a VLAN-aware switch, every frame received
on a port is classified as belonging to only one VLAN. Whenever a
broadcast, multicast, or unknown destination frame needs to be flooded by
a VLAN-aware switch, the frame is sent out through only the other active
ports that are members of this VLAN.
The default switch configuration groups all ports into the port-based default
VLAN 1. This VLAN cannot be deleted from the system, and is statically
bound to the default spanning tree group (STG).

Port-based VLANs

A port-based VLAN is a VLAN with ports explicitly configured as members.
When creating a port-based VLAN, you assign a VLAN identification
number (VID) and specify the ports that belong to the VLAN. The VID is
used to coordinate VLANs across multiple switches.
The example in
port-based VLANs: one for the marketing department and one for the sales
department. Ports are assigned to each port-based VLAN. A change in the
sales area can move the sales representative at port 3/1 (the first port in the
I/O module in chassis slot 3) to the marketing department without moving
cables. With a port-based VLAN, you only need to indicate in Device
Manager or the CLI that port 3/1 in the sales VLAN now is a member of
the marketing VLAN.
Configuration — VLANs, Spanning Tree, and Static Link Aggregation using Device Manager
Copyright © 2005-2007, Nortel Networks
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"VLAN ports" (page 18)
"Port-based VLANs" (page 18)
"Policy-based VLANs" (page 19)
"Protocol-based VLANs" (page 20)
"Independent VLAN Learning (IVL)" (page 22)
"VLAN tagging and port types" (page 22)
"VLAN router interfaces" (page 24)
"VLAN implementation" (page 24)
Figure 1 "Port-based VLAN" (page 19)
Nortel Ethernet Routing Switch 8300
NN46200-510 03.01 Standard
4.0 27 August 2007
shows two