User`s guide

IP Routing
6-2
8000-A2-GB21-10
June 1997
If a match is found for more than one destination address, the order of
precedence is:
1. Host route
2. Subnet route
3. Network route
4. Default route
Therefore, the packet is sent to the next-hop address specified for that
destination which matches and has the highest precedence.
A packet routed through the HotWire DSLAM that has a destination address not
matching any entry in the routing table is dropped unless a default route is
specified. If a default route is specified using the conventional address 0.0.0.0 as
the destination IP address, the packet is sent to the associated next-hop address.
Since this release of the HotWire DSLAM system uses static addressing, static
routes are used to route to the end-user systems. It uses the following routing
table form:
host/subnet/network, next hop, S/D
Where:
 The
host/subnet/network is one of the following:
— A host address (for example, the specific IP address of an RTU or
end-user system), or
— A subnet or network portion of a destination or source IP address, or
— The default route, which is defined to be 0.0.0.0.
 The
next hop is the IP address to which the given datagram should be
forwarded. For example, the IP address of the router connected to the LAN or
the HotWire RTU.

S/D indicates if the address in the host/subnet/net field is a source address or
a destination address.
For more information about the routing table, see the
HotWire Digital Subscriber
Line Access Multiplexer (DSLAM) User’s Guide
.