Troubleshooting guide

BSR Troubleshooting Guide
5-84
DNS Not Running
If issuing the host command at the UNIX prompt returns a Host not found
message, but you are able to open a connection using the host’s IP address, the
DNS might not be running. Consult the DNS software documentation or your
system administrator for information on configuring and enabling the DNS.
Handling Routing Problems
The following sections describe how to re-enable a problem router and correct
network router configuration problems that can occur after a new interface is
added to a router:
• Problem Router
• Misconfigured Router
• Routing Interface Down
Problem Router
Follow these steps to enable a router that is having problems:
1. To isolate the problem router, use the traceroute command in Privileged
EXEC mode, as shown in the following example:
RDN#traceroute {<hostname> | <ip-address>}
where ip-address is the destination IP address or host name on the command
line.
Table 5-1 describes the traceroute command output field descriptions:
Table 5-1 traceroute Command Output Field Descriptions
Field Description
nn/msec For each node, the round trip time in milliseconds for the specified number
of probes.
* The probe timed out.
? Unknown packet type.