Troubleshooting

DNS Resolver

As mentioned under “Basic Operation” on page C-88,if the DNS entry config­ ured in the switch does not include the domain suffix for the desired target, then you must use the target host’s fully qualified domain name with DNS- compatible commands. For example, using the document server in Figure C­

37 as a target:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ProCurve# ping

 

docservr.pubs.outdoors.com

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10.28.229.219 is

 

 

alive,

 

 

time

 

=

1

 

ms

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Target’s Fully Qualified

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Domain Name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ProCurve# traceroute docservr.pubs.outdoors.com

 

 

 

 

 

 

 

 

 

 

traceroute to 10.28.229.219

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

hops max, 5 sec. timeout, 3 probes

1

1 hop min, 30

 

10.28.192.2

 

 

 

1

 

ms

0

 

ms

0

ms

2

10.28.229.219

0

 

ms

0

 

ms

0

ms

Figure C-40. Example of Ping and Traceroute Execution When Only the DNS Server IP Address Is Configured

Viewing the Current DNS Configuration

The show ip command displays the current domain suffix and the IP address of the highest priority DNS server configured on the switch, along with other IP configuration information. If the switch configuration currently includes a non-default (non-null) DNS entry, it will also appear in the show run command output.

ProCurve# show ip

Internet (IP) Service

IP Routing : Disabled

Default

Gateway : 10.28.192.2

Default

TTL

: 64

 

 

 

 

 

 

 

 

 

 

 

 

 

ArpAge

 

 

 

 

 

: 20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Domain Suffix

 

 

 

pubs.outdoors.com

DNSserver

: 10.28.229.10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DNS Resolver Configuration in the show ip command output

VLAN

IP Config

IP Address

Subnet Mask

------------

+

Manual----------

---------------

---------------

DEFAULT_VLAN

10.28.192.1

255.255.255.0

Figure C-41. Example of Viewing the Current DNS Configuration
C-93