<div>
<div class="content wysiwyg-content">
We have 5 switch 3Com 3870 and 3 new 3Com (now hp) 4500G connected from first to last some by ethernet and others by fiber.<br />
<br />
Now we want to connect last switch with the first one in order to give redundancy. <br />
<br />
How do I configure the Spanning Tree on the 3870 and the 4500G?<br />
Do I have to configure all switchs or only the last and the first?<br />
What kind of configuration do I have to do?<br />
<br />
Thanks<br />

</div>
</div>


We have 5 switch 3Com 3870 and 3 new 3Com (now hp) 4500G connected from first to last some by ethernet and others by fiber.

Now we want to connect last switch with the first one in order to give redundancy. 

How do I configure the Spanning Tree on the 3870 and the 4500G?
Do I have to configure all switchs or only the last and the first?
What kind of configuration do I have to do?

Thanks


3Com Spanning Tree

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.