Enhancements

Release M.08.89 Enhancements

■The host’s domain must be reachable from the switch. This requires that the DNS server for the switch must be able to communicate with the DNS server(s) in the path to the domain in which the target host operates.

■The fully qualified domain name must be used, and the domain suffix must correspond to the domain in which the target host operates, regardless of the domain suffix configured in the switch.

Example. Suppose the switch is configured with the domain suffix mygroup.procurve.net and the IP address for an accessible DNS server. This time, the operator wants to use the switch to trace the route to a host named “remote-01” in another domain named common.group.net. As long as this domain is accessible to the DNS server configured on the switch, a traceroute command using the target’s fully qualified DNS name should succeed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fully Qualified Host Name for

ProCurve# traceroute

 

remote-01.common.group.net

 

 

 

 

 

the Target Host

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

traceroute to 10.22.240.73

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 hop min, 30

 

 

 

 

 

max, 5 sec. timeout, 3 probes

1

10.28.229.3

0

ms

 

 

 

 

 

 

 

 

 

0

ms

 

 

2

10.71.217.1

0

ms

0

ms

0

ms

 

 

3

10.0.198.2

 

1

ms

0

ms

0

 

 

 

 

 

 

 

 

 

 

 

 

IP Address for Target Host

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

10.22.240.73

0

ms

0

ms

0

ms

 

 

 

 

“remote-01”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 4. Example Using the Fully Qualified Domain Name for an Accessible Target in Another Domain

Configuring and Using DNS Resolution with Ping and Traceroute Commands

1.Determine the following:

a.the IP address for a DNS server operating in a domain in your network

b.the domain name for an accessible domain in which there are hosts you want to reach with ping and/or traceroute commands. (This is the domain suffix in the fully qualified domain name for a given host operating in the selected domain. Refer to “Terminology” on page 28.) Note that if a domain suffix is not configured, fully qualified domain names can be used to resolve ping and traceroute commands.

c.the host names assigned to target IP addresses in the DNS server for the specified domain

2.Use the data from steps 1a and 1b to configure the DNS entry on the switch.

3.Use either ping or traceroute with the host names for the target devices whose connectivity you are testing or troubleshooting.

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