Clearing Routes - HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual

ProCurveSR7102dl#traceroute 192.168.100.2
Type CTRL+C to abort.
Tracing route to 192.168.100.2 over a maximum of 30 hops
1 2ms 2ms
2 4ms 4ms
3 4ms 5ms
Figure 11-9. Traceroute Command
Tracing routes allows you to monitor actual traffic flow (although in a neces-
sarily limited fashion). When traffic does not reach its destination, you can
determine which network node cannot forward it. You can then troubleshoot
the device with the problem.
When traffic can take more than one route through a network, you can use
the traceroute command to discover which path routers have selected. If you
determine that routers are using high-cost paths unnecessarily, you can make
adjustments accordingly. For example, you can configure a routing protocol,
such as OSPF, that takes link cost into account. Or you can configure PBR to
allow the router to forward traffic over different paths depending on certain
characteristics of the traffic. (See Chapter 13: IP Routing—Configuring RIP,
OSPF, BGP, and PBR in the Advanced Management and Configuration
Guide.)

Clearing Routes

In addition to the routes that you add to your router's routing table, your router
may learn routes using a dynamic routing protocol. If your router has learned
unreliable routes, you can clear them using this command:
Syntax: clear ip route [* | <A.B.C.D> <subnet mask | /prefix length>
You can enter *, which clears all routes, or the destination for the specific
route you want to remove.
IP Routing—Configuring Static Routes
2ms 10.1.1.2
4ms 10.2.2.1
4ms 192.168.100.2
Destination
Troubleshooting Static Routing
Next hop—
directly
connected
neighbor
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