Introduction To Static Route - 3Com 4500 PWR 26-Port Configuration Manual

22
Static Route Configuration
Wh n configuring a static route, e

Introduction to Static Route

Static Route Configuration
Displaying and Maintaining Static Routes
Static Route Configuration Example
Trouble shooting a Static Route
The term router in this chapter refers to a router in a generic sense or an Ethernet switch running a
ro uting protocol.
Introduction to Static Route
Static Route
Static routes are special routes. They are manually configured by the administrator. In a relatively
simple network, you only need to c
configuration and usage of static routes can improve network performance and ensure sufficient
bandwidth for important applications.
When the network topology changes, static routes may become unreachable be
adapt themselves to the change automati
network administrator needs to modify the configuration of static routes manually.
Stat ic routes are divided into three types:
Reachab le route: normal route. If a static route to a destination is of this type, the IP packets
destined for this destination will be forwarded to the next hop. It is the most common type of static
routes.
Unreachable route: route with the reject attribute. If
attribute, all the IP packets destined for this destination will be discarded, and the source hosts will
be informed of the unreachability of the destination.
Blackhole route: route with blackhole attribute. If a static route destined for a destination has the
blackhole attribute
hop address, and all the IP packets addressed to this destination will be dropped without notifying
the source hosts.
The attributes reject and blackhole are usually used to limit the range of the destinations this router
can reach, a nd help troubleshoot the network.
go to these sections for information you are interested in:
onfigure static routes to make routers work normally. Proper
cally, thus resulting in network interruption. In this case, the
, the outgoing interface of this route is the Null 0 interface regardless of the next
22-1
a static route to a destination has the reject
cause they cannot