66..1212 TracerouteTraceroute
The Traceroute test is used to determine the route taken by packets in an IP network.
The intermediate routers traversed are identified by the sending of a sequence of
ICMP Ping packets to the desired destination, each packet with a too low Time-to-
Live (TTL) or
hop limit
so that it terminates in one of the routers and makes the router
return an error message. Routers decrement the TTL and discard a package when the
TTL value has reached zero.
Traceroute works by gradually increasing the TTL value for each packet,
starting at "1". The first set of packets terminates at the first router, the second
set at the second router, and so on until a ping reply is received from the
destination. This is used to build a list of the hosts that the packets must pass
through to reach the intended destination.
The test will send regular ICMP type 11 Ping packets to each host that is
detected in this way, and display the resulting RTT (Round Trip Times).
66..1212..11 Ports Setup and StatusPorts Setup and Status
The first step in running an application is to set up the port interfaces. This is
done on the Ports SetupPorts Setup screen, which also provides port status information.
The setup options and status information related to the Ethernet interface are
described in a separate section:
Ethernet Setup and Status
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