Trace route group

This group uses the following method to detect routes used to reach a destination address.

  1. The originating Layer 3 Switch sends a probe packet (a UDP packet) to the destination address with a time-to-live (TTL) value of 1.
  2. The first Layer 3 Switch that receives this packet decrements the TTL, then drops the packet and returns a ICMP packet to the originator.
  3. The originating Layer 3 Switch records the route in the Trace route result table.
  4. The originating Layer 3 Switch sends a probe packet (a UDP packet) to the destination address with a TTL value of 2.
  5. The second Layer 3 Switch that receives this packet decrements the TTL, then drops the packet and returns an ICMP packet to the originator.
  6. The originating Layer 3 Switch records the route in Trace route result table.

    This procedure is repeated until the destination is reached or the maximum TTL is reached.

Parent topic: Trace route group