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4-6

Switch Meshing

Switch Meshing Fundamentals

■ If GVRP is enabled, meshed ports in a switch become members of any

dynamic VLANs created in the switch in the same way that they would if

meshing was not configured in the switch. (For more on GVRP, refer to

chapter 2, “GVRP”.)

Note • A switch mesh domain (figure 4-1 on page 4-1) cannot include either

a switch that is not configured for meshing, or a hub.

• Where a given pair of switches are linked with meshed ports, you must

not also link the pair together through non-meshed ports unless you

have also enabled STP, RSTP, or MSTP to prevent a loop from forming.

Figure 4-4. Example of an Unsupported Topology

• The switch blocks traffic on a meshed port connected to a non-

meshed port on another switch.

• Switch meshing does not allow trunked links (LACP or Trunk)

between meshed ports.

Linking a non-mesh device or port into the mesh causes the meshed switch

port(s) connected to that device to shut down.

Using a Heterogeneous Switch Mesh

You can use the switches covered in this guide with the HP Series 5300xl

switches in normal mode.

Switch 3

Switch 1

Switch 2

Switch Mesh

Domain

This topology forms a

broadcast loop unless

you configure MSTP

on the network.

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