Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Tracepath
The Tracepath tool (Maintenance > Tools > Network utilities > Tracepath) can be used to assist in troubleshooting
system issues.
system issues.
It allows you to discover the route taken by a network packet sent from the VCS to a particular destination host
system.
system.
To use this tool:
1.
In the Host field, enter the IP address or hostname of the host system to which you want to trace the route.
2.
Click Tracepath.
A new section will appear with a banner stating the results of the trace, and showing the details of each node along
the path, the time taken for each node to respond to the request, and the maximum transmission units (MTU).
the path, the time taken for each node to respond to the request, and the maximum transmission units (MTU).
The route taken between the VCS and a particular host may vary for each tracepath request.
DNS Lookup
The DNS lookup tool (Maintenance > Tools > Network utilities > DNS lookup) can be used to assist in
troubleshooting system issues.
troubleshooting system issues.
It allows you to query DNS for a supplied hostname and display the results of the query if the lookup was successful.
To use this tool:
1.
In the Host field, enter either:
—
the name of the host you want to query, or
—
an IPv4 or IPv6 address if you want to perform a reverse DNS lookup
2.
In the Query type field, select the type of record you want to search for:
(for reverse lookups the Query type is ignored - the search automatically looks for PTR records)
Option
Searches for...
All
any type of record
A (IPv4 address)
a record that maps the hostname to the host's IPv4 address
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)
and TURN services, see below)
NAPTR (Name
authority pointer)
authority pointer)
a record that rewrites a domain name (into a URI or other domain name for
example)
example)
3.
By default the system will submit the query to all of the system's default DNS servers (System > DNS). To
query specific servers only, set Check against the following DNS servers to Custom and then select the DNS
servers you want to use.
query specific servers only, set Check against the following DNS servers to Custom and then select the DNS
servers you want to use.
4.
Click Lookup.
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Cisco TelePresence Video Communication Server Administrator Guide