Ip Routing - D-Link DES-3326SR User Manual

DES-3326SR Layer 3 Fast Ethernet Switch User's Guide
acknowledgement, the network device must release its TCP/IP
configuration and reinitialize.
When a new TCP/IP configuration is received from a DHCP
server, the network device checks for a possible IP address
conflict by sending an Address Resolution Protocol (ARP)
request that contains its new IP address.
For two DHCP servers to communicate across different
subnets, the BOOTP/DHCP Relay of the DES-3326SR must be
used. The DHCP servers are identified by IP addresses.

IP Routing

IP handles the task of determining how packets will get from
their source to their destination. This process is referred to as
routing.
For IP to work, the local system must be attached to a network.
It is safe to assume that any system on this network can send
packets to any other system, but when packets must cross
other networks to reach a destination on a remote network,
these packets must be handled by gateways (also called
routers).
Gateways connect a network with one or more other networks.
Gateways can be a computer with two network interfaces or a
specialized device with multiple network interfaces. The device
is designed to forward packets from one network to another.
IP routing is based on the network address of the destination IP
address. Each computer has a table of network addresses. For
each network address, a corresponding gateway is listed. This
is the gateway to use to communicate with that network. The
gateway does not have to be directly connected to the remote
network, it simply needs to be the first place to go on the way
to the remote network.
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