Technicolor - Thomson SpeedTouchTM620 manual SLA Traceroute configuration

Chapter 12

SLA Monitoring.

Traceroute Process Traceroute is usually implemented by transmitting a series of probe packets with increasing time-to-live values. A probe packet is a UDP datagram encapsulated into an IP packet. Each hop in a path to the target (destination) host rejects the probe packet (probe's TTL too small) until its time-to-live value becomes large enough for the probe to be forwarded. Each hop in a traceroute path returns an ICMP message that is used to discover the hop and to calculate a round trip time. Some systems use ICMP probes (ICMP Echo request packets) instead of UDP ones to implement traceroute. In both cases traceroute relies on the probes being rejected via an ICMP message to discover the hops taken along a path to the final destination. Both probe types, UDP and ICMP, are encapsulated into an IP packet and thus have a TTL field that can be used to cause a path rejection.

SLA Traceroute configuration

The SLA trace route process can be configured by executing the following CLI command:

=>:sla traceroute add test=route addr=11.0.0.138 =>

The following parameters are mandatory :

test : this is just a name to identify the trace route test.

addr : this is the peer IP address of which we want to trace the route.

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