Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Note:
there are other remote devices not listed here to which the VCS will be sending media and signaling, but the
ports on which these devices receive traffic from the VCS is determined by the configuration of the destination
device, so they cannot be listed here. If you have opened all the ports listed in the
device, so they cannot be listed here. If you have opened all the ports listed in the
VCS will be able to communicate with all remote devices. You only need to use the information on this page if you
want to limit the IP ports opened on your firewall to these remote systems and ports.
want to limit the IP ports opened on your firewall to these remote systems and ports.
Network Utilities
This section provides information about how to use the network utility tools:
■
: allows you to check that a particular host system is contactable from the VCS and that your network is
correctly configured to reach it.
■
: allows you to discover the details of the route taken by a network packet sent from the VCS to a
particular destination host system.
■
: allows you to discover the path taken by a network packet sent from the VCS to a particular
destination host system.
■
: allows you to check which domain name server (DNS server) is responding to a request for a
particular hostname.
Ping
The Ping tool (Maintenance > Tools > Network utilities > Ping) can be used to assist in troubleshooting system
issues.
issues.
It allows you to check that a particular host system is contactable and that your network is correctly configured to
reach it. It reports details of the time taken for a message to be sent from the VCS to the destination host system.
reach it. It reports details of the time taken for a message to be sent from the VCS to the destination host system.
To use this tool:
1.
In the Host field, enter the IP address or hostname of the host system you want to try to contact.
2.
Click Ping.
A new section will appear showing the results of the contact attempt. If successful, it will display the following
information:
information:
Host
The hostname and IP address returned by the host system that was queried.
Response time
(ms)
(ms)
The time taken (in ms) for the request to be sent from the VCS to the host system and back
again.
again.
Traceroute
The Traceroute tool (Maintenance > Tools > Network utilities > Traceroute) 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. It reports the details of each node along the path, and the time taken for each node to respond to the request.
system. It reports the details of each node along the path, and the time taken for each node to respond to the request.
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 path.
2.
Click Traceroute.
A new section will appear with a banner stating the results of the trace, and showing the following information for
each node in the path:
each node in the path:
TTL
(Time to Live). This is the hop count of the request, showing the sequential number of the node.
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Cisco TelePresence Video Communication Server Administrator Guide
Maintenance