Exfo ETS-1000L Manuel d'utilisateur télécharger pdf (Page 17)

Ethernet Tester Analyzer 11

4 Loopback

The Loopback function is necessary for networks testing in compliance

with the RFC 2544, as well as for a number of other tasks. This function

allows to test the network without changing it’s settings.

Network testing with the Loopback function can be performed at the four

OSI layers, jumbo frames are supported (up to 9600 bytes).

 At the Physical layer (L1) all the incoming traffic is being retransmitted

backward without changing.

All the connection schemes use the following notation:

 MAC Src: indicates the source MAC address

 MAC Dst: indicates the destination MAC address

 IP Src: indicates the source IP address

 IP Dst: indicates the destination IP address

 TCP/UDP Dst: indicates the destination TCP/UDP port number

 TCP/UDP Src: indicates the source TCP/UDP port number

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Exfo ETS-1000L Manuel d'utilisateur Page 17