Canton 3C16476CS Manual De Usuario

Figure 33   Tagged VLAN Configuration

To set up the configuration shown in 

, do 

the following:

Create VLAN2 on both Switch 1 and Switch 2. You 
need not create VLAN1 since it exists by default.

On Switch 1, set the ports that you want to be part of 
VLAN2 to Untagged. Set one port (for example, port 
16) to Tagged.

Click Apply.

On Switch 2, set the ports that you want to be part of 
VLAN2 to Untagged. Set one port (for example, port 
8) to Tagged.

Click Apply.

Connect the Tagged port on Switch 1 (in this 
example, port 16) to the Tagged port on Switch 2 (in 
this example, port 8).

Those ports on Switch 1 that are members of VLAN2 
can now communicate with those ports on Switch 2 
that are members of VLAN2.

Spanning tree is a bridge-based system for providing 
fault tolerance on networks and can be used to 
detect and disable network loops. The spanning tree 
ensures that the optimal path is maintained between 
spanning tree-compliant networked devices by:

■

Disabling redundant paths when the main paths 
are operational.

■

Enabling redundant paths if the main paths fail. 

Spanning tree uses a distributed algorithm to select a 
bridging device that serves as the root of the 
spanning tree network. The bridging device, known 
as the Root Bridge, generates bridge protocol data 
units (BPDUs) on all ports at a regular interval known 
as the Hello Time. All other spanning tree-compliant 
devices on the network have a designated Root Port. 
This is the Port nearest the Root Bridge and it is used 
for receiving the BPDUs initiated by the Root Bridge. If 
a bridge does not get a Hello BPDU after a 
predetermined interval, the bridge assumes that the 
link to the Root Bridge is down. This bridge will then 
initiate negotiations with other bridges to reconfigure 
the network to reestablish a valid network topology.