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BES50 advanced features fundamentals
VLANs provide greater network efficiency by reducing broadcast traffic,
and they allow you to make network changes without having to update IP
addresses or IP subnets. VLANs inherently provide a high level of network
security because traffic must pass through a configured Layer 3 link to
reach a different VLAN.
The switch supports the following VLAN features:
•
up to 32 VLANs based on the IEEE 802.1Q standard
•
distributed VLAN learning across multiple switches using explicit or
implicit tagging and GVRP protocol
•
port overlapping, allowing a port to participate in multiple VLANs
•
end stations that belong to multiple VLANs
•
passing traffic between VLAN-aware and VLAN-unaware devices
•
priority tagging
Assigning ports to VLANs
Before you enable VLANs for the switch, you must first assign each port
to the VLAN groups in which it will participate. By default, all ports are
assigned to VLAN 1 as untagged ports.
Add a port as a tagged port if you want the port to carry traffic for one or
more VLANs, and for any intermediate network devices, or for the host at
the other end of the connection support VLANs. Assign ports on the other
VLAN-aware network devices along the path to carry this traffic to the same
VLANs, either manually or dynamically by using Generic VLAN Registration
Protocol (GVRP).
Add a port as an untagged port if you want the port to participate in one or
more VLANs, but not on the intermediate network devices nor on the host at
the other end of the connection support VLANs.
The following figure illustrates tagged and untagged frames.
SMB
Using the Nortel Business Ethernet Switch 50 Series
NN47924-301
01.01
Standard
1.00
October 2006
Copyright © 2006, Nortel Networks
Nortel Networks Confidential
.
Summary of Contents for BES50FE-12T PWR
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