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DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
168 Web-Based Switch Management
Before You Start
The DES-3326S Layer 3 Switch supports a wide array of
functions and gives great flexibility and increased network
performance by eliminating the routing bottleneck between the
WAN or Internet and the Intranet. Its function in a network
can be thought of as a new generation of router that performs
routing functions in hardware, rather than software. It is a
router that also has up to 24+2 independent Ethernet collision
domains – each of which can be assigned an IP subnet.
This flexibility and rich feature set requires a bit of thought to
arrive at a deployment strategy that will maximize the potential
of the DES-3326S Layer 3 switch.
General Deployment Strategy
1. Determine how the network would be best segmented.
This is probably done using VLANs in an existing layer
2 switched network.
2. Develop an IP addressing scheme. This involves
allocating a block of IP addresses to each network
segment. Each network subnet is then assigned a
network address and a subnet mask. See Chapter 5,
Switch Management Concepts section titled IP
Addressing and Subnetting for more information.
3. Determine which network resources must be shared by
the subnets. Shared resources may be connected
directly to the Layer 3 switch, if need be. Static routes
to each of the shared resources should be determined.