Cisco TelePresence Administrator's Guide

Option Searches for...
AAAA (IPv6 address) a record that maps the hostname to the host's IPv6 address
SRV (services) SRV records (which includes those specific to H.323, SIP, Unified Communications
and TURN services, see below)
NAPTR (Name
authority pointer)
a record that rewrites a domain name (into a URI or other domain name for example)
3. Click Lookup.
A separate DNS query is performed for each selected Query type. The domain that is included within the
query sent to DNS depends upon whether the supplied Host is fully qualified or not (a fully qualified host
name contains at least one "dot"):
n If the supplied Host is fully qualified:
l DNS is queried first for Host
l If the lookup for Host fails, then an additional query for Host.<system_domain> is performed (where
<system_domain> is the Domain name as configured on the DNS page)
n If the supplied Host is not fully qualified:
l DNS is queried first for Host.<system_domain>
l If the lookup for Host.<system_domain> fails, then an additional query for Host is performed
For SRV record type lookups, multiple DNS queries are performed. An SRV query is made for each of the
following _service._protocol combinations:
n _h323ls._udp.<domain>
n _h323rs._udp.<domain>
n _h323cs._tcp.<domain>
n _sips._tcp.<domain>
n _sip._tcp.<domain>
n _sip._udp.<domain>
n _collab-edge._tls
n _collab-edge._tcp
n _cuplogin._tcp
n _cisco-uds._tcp
n _turn._udp.<domain>
In each case, as for all other query types, either one or two queries may be performed for a <domain> of
either Host and/or Host.<system_domain>.
Results
A new section will appear showing the results of all of the queries. If successful, it will display the following
information:
Query
type
The type of query that was sent by the VCS.
Name The hostname contained in the response to the query.
Cisco VCS Administrator Guide (X8.1.1) Page 315 of 507
Maintenance
Network utilities

Cisco TelePresence Specifications

General

Brand	Cisco
Model	TelePresence
Category	Server
Language	English