Avaya 580 - Manual (Page 322)

11-4 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 11
DNS Client on the Avaya Multiservice Switch
The Avaya Multiservice switch has DNS client capabilities that work in
conjunction with the Command Line Interface (CLI). This feature is useful
for testing connectivity (ping and traceroute) as well as copying files from
TFTP servers.
It is not meant for use with the normal operation of the Avaya switch.
Therefore, you should not use a DNS name to specify the location of the
Avaya Multiservice switch’s RADIUS server, SNTP Time server, etc. These
parameters must be specified as IP addresses. However, DNS does work for
the Avaya Multiservice Switch’s Help File HTTP server.
In order for the DNS client functionality to work, it must be enabled on the
switch and at least one name server IP address must be specified.
The following DNS Client features are supported:
■
The DNS Client on the Avaya Multiservice switch is Stub Resolver
(i.e. it does not support Iteration). This means that referral answers
will be discarded. A Recursive DNS server must be used if you
intend on using FQDN for which the configured DNS servers do not
have resource records.
■
Up to six DNS name servers can be configured.
■
Up to six default DNS Domain Suffixes can be configured.
■
When DNS is enabled, DNS names can be used in place of IP
addresses for
ping , telnet , connect, traceroute and
copy tftp CLI commands.
■
The DNS client name can consist of up to 255 characters.
■ A single label within a DNS client name can consist of 63
characters.
Once enabled, you have the option of specifying a DNS suffix to add to
unqualified host names. If so, you need only type the host name, in place of
the IP address, without the suffix when entering commands. The suffix will
be appended to host names that have no suffix.
For example: You can specify the avaya.com suffix. So when you want to
ping hostA in the avaya.com domain, you need only type the host name
without the suffix.
Avaya(configure)# ping hostA
instead of:
Avaya(configure)# ping hostA.avaya.com