Making Vlan Connections; Application Notes; Figure 2-4. Making Vlan Connections - Enterasys Matrix-V V2H124-24FX Hardware Installation Manual

Making VLAN Connections

This switch supports VLANs which can be used to organize any group of network
nodes into separate broadcast domains. VLANs confine broadcast traffic to the
originating group, and can eliminate broadcast storms in large networks. This
provides a more secure and cleaner network environment.
VLANs can be based on untagged port groups, or traffic can be explicitly tagged to
identify the VLAN group to which it belongs. Unttagged VLANs can be used for small
networks attached to a single switch. However, tagged VLANs should be used for
larger networks, and all the VLANs assigned to the inter-switch links.
R&D
VLAN 1
Tagged
Ports
VLAN 2
Testing
Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use
untagged ports.

Application Notes

1. Full-duplex operation only applies to point-to-point access (such as when a
switch is attached to a workstation, server or another switch). When a
1000BASE-T module port is connected to a hub, the port must operate in
half-duplex mode.
2. Avoid using flow control on a port connected to a hub unless it is actually
required to solve a problem. Otherwise back pressure jamming signals may
degrade overall performance for the segment attached to the hub.
Untagged Ports
VLAN
unaware
Finance
switch
Marketing
VLAN 3
VLAN 4

Figure 2-4. Making VLAN Connections

Application Notes
Tagged Port
Finance
VLAN 1
VLAN 3
2
VLAN
aware
switch
R&D
Testing
VLAN 2
2-5