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What is Routing? 3-3
Integrating
Bridging and
Routing
The LANplex system has bridging and routing integrated into the
Ethernet/FDDI Switching Module (EFSM) and the Ethernet Switching
Module (ESM). The Token Ring Switching Module (TRSM) supports
bridging only.
Multiple switch ports can be assigned to each subnet. See Figure 3-3.
Traffic between ports assigned to the same subnet is switched
transparently using transparent bridging or Express switching (described
in the LANplex 6000 Operation Guide). Traffic traveling to different
subnets is routed using one of the supported routing protocols.
In the following descriptions of bridging and routing on the LANplex
system, the term MAC address refers to a physical hardware address.
The term network address refers to a logical address that applies to a
specific protocol.
Figure 3-3 Multiple Ports per Subnets with the EFSM
Because the LANplex model of bridging and routing allows several
segments to be connected to the same subnet, you can increase the
level of segmentation in your network without having to create new
subnets or assign network addresses. Instead, you can use additional
Subnet 1
Subnet 2
Subnet 3
Subnet 4
Internal
FDDI Ports
Ethernet/FDDI
Switching Module
Ethernet Ports