Edge-Core ES4625 Guia de Instalação descarregar pdf (Página 33)

2-5

Application Examples

Making VLAN Connections

These switches support 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. Untagged 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.

The Gigabit Ethernet Switches also support multiple spanning trees which allow

VLAN groups to maintain a more stable path between all VLAN members. This can

reduce the overall amount of protocol traffic crossing the network, and provide a

shorter reconfiguration time when any link in the spanning tree fails.

At Layer 3, VLANs are used to create an IP interface, where one or more ports are

assigned to the same IP segment. Traffic is automatically routed between different

IP segments on the same switch, without any need to configure routing protocols.

Figure 2-4 Making VLAN Connections

Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use

untagged ports.

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VLAN 3

Untagged Ports

VLAN

unaware

switch

Tagged Port

VLAN

aware

switch

Tagged

Ports

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VLAN 3

R&D

VLAN 2

Testing

R&D

Testing

VLAN 1

VLAN 2

VLAN 4

VLAN 1

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StackMaster

StackLink

Power

RPU

Diag

Module

Master

Select

StackID

Console

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