Network Connectivity Testing - Cisco TelePresence Server 7010 Product User Manual

Network settings

Network connectivity testing

You can use the Network connectivity page to troubleshoot network issues between the TelePresence
Server and a remote video conferencing device.
On this page you can ping another device from the TelePresence Server's web interface and trace the
route to that device. The results show whether or not you have network connectivity between the
TelePresence Server and the remote host.
To test connectivity with a remote device, go to Network > Connectivity. In the text box, enter the IP
address or hostname of the device to which you want to test connectivity and click Test connectivity.
The results show the outbound interface for the query and the IP address of the remote host.
The ping results show the roundtrip time in milliseconds and the TTL (Time To Live) value on the echo
reply.
For each intermediate host (typically routers) between the TelePresence Server and the remote host, the
host's IP address and response time are shown.
Not all devices will respond to the messages from the TelePresence Server. Routing entries for non-
responding devices are shown as <unknown>. Some devices are known to send invalid ICMP response
packets (for example, with invalid ICMP checksums). Invalid ICMP responses are also not recognized
by the TelePresence Server so these responses are also shown as <unknown>.
Note: The ping message is sent from the TelePresence Server to the IP address of the remote host.
Therefore, if the TelePresence Server has an IP route to the given host, regardless of whether that route
lies out of port A or port B, the ping will be successful. This feature allows the TelePresence Server's IP
routing configuration to be tested, and it has no security implications.
Note: If you are unable to ping the remote host, then check your network configuration - especially any
firewalls using NAT.
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