Epygi QUADRO FXO, Administrator'S Manual

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QuadroFXO Manual II: Administrator's Guide Administrator's Menus
QuadroFXO (SW Version 3.0.x) 24
Networking Tools
The Networking Tools provide the possibility to check the Internet connection.
Ping sends four ICMP (Internet Control Message Protocol) requests with a default size of 64 bytes to the destination (IP address or host name)
specified in the text field Ping Target . The response times are logged, and the round trip time (the time required from being sent until being received
again) is measured. The results are displayed in the lower area of the page: The minimum and maximum round trip time and its average, the
percentage of lost and of received frames.
Traceroute checks the Internet connection by triggering the routers (hops) that are passed to reach the destination specified in the text field
Traceroute Target . Trace routing gives feedback on the routers passed by packets on the way toward the destination and the round trip delay of
packets to these routers.
Attention : No Traceroute is possible if a high priority
Firewall has been enabled (see chapter Firewall and NAT ).
For the purpose of tracerouting, several IP packets are sent
out. UDP (User Datagram Protocol) is used to send packets
and ICMP (Internet Control Message Protocol) is used to
receive information about the routers. In their headers, the
TTL (Time To Live) value increases from 1 to 30. When the
first IP frame is received by the first router, its IP address will
be returned in its acknowledgement
The second frame delivers the IP address of the second
router and so on and so forth. The results of
Traceroute are
displayed on the lower area of the page.
Ping Target requires the destination (IP address or host
name) for the ICMP request.
The Ping button starts pinging the specified ping target.
Traceroute Target is used to enter the IP address or host
name of the destination to be trace routed.
The Traceroute button is used to process the router
triggering to check the Internet connection.
In the field below the output of the Ping or Traceroute
procedure is shown.
Fig. II-36: Networking Tools page
To Check the Internet connection
1. Specify destination address for the ICMP request in the Ping Target text field.
2. Press the Ping button to process the ICMP request.
3. Specify the destination address to trace the route.
4. Press the Traceroute button to process the router triggering.