Cabletron Systems TRFMIM-28 Manuel D’Utilisation

 

3-5

Operation

 

The switches shown in figure 3-3 above are said to be fully meshed. The term 
“fully meshed” is often used when describing the connections between switches 
in a domain. Fully meshed implies that there are links between all switches to 
every other switch. A fully-meshed topology provides high reliability and low 
delays between endpoints. Figure 3-4 shows a VLAN domain consisting of four 
fully-meshed VLAN switches.

 

SecureFast VLAN (SFVLAN) switches are connection-oriented internetworking 
devices. These devices use source address/destination address (SA/DA) pairs 
along with embedded layer 3 virtual routing services to provide address 
resolution and call processing. In a connection-oriented network, path 
determination is accomplished through signaling performed at call setup time. 
Once a call is programmed, no additional software intervention is required until 
the call is completed. This type of call management operates much like a 
telephone network. The circuit is set up, data is transferred, and the circuit is torn 
down.

Switches switch packets at the MAC layer and allow connectivity of endpoints via 
Access Ports based on VLAN mappings. The first packet is routed, the remaining 
packets are then switched along the same path. Each VLAN switch maintains a 
Local Directory of endpoint MAC and network addresses found on each switch 
port. The aggregation of each VLAN switch’s Local Directory form a complete 
view of an entire VLAN domain. This information is used by the VLAN Manager 
for assignment and verification of VLANs.

SFS Network