178 BigIron RX Series Configuration Guide
53-1002253-01
Configuring IP parameters
7
Syntax: show ip dns server-list
Debugging the DNS feature
To debug the DNS feature enter the following command.
BigIron RX#debug ip dns
IP: dns debugging is on
Syntax: debug ip dns
Using a DNS name to initiate a trace route
Suppose you want to trace the route from a device to a remote server identified as NYC02 on
domain newyork.com.
FIGURE 9 Querying a host on the newyork.com domain
Because the newyork.com domain is already defined on the device, you need to enter only the host
name, NYC02, as noted below.
BigIron RX# traceroute nyc02
Syntax: traceroute <host-ip-addr> [maxttl <value>] [minttl <value>] [numeric] [timeout <value>]
[source-ip <ip addr>]
The only required parameter is the IP address of the host at the other end of the route.
After you enter the command, a message indicating that the DNS query is in process and the
current gateway address (IP address of the domain name server) being queried appear on the
screen.
...
...
[
Domain Name Server
nyc02
nyc01
nyc01
nyc02
207.95.6.199
newyork.com
BigIron RX
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