Chapter 3 Ethernet Testing
Loopback testing
88
HST-3000 Ethernet Testing User’s Guide
To manually perform a local loopback
1 If you haven’t already done so, launch the Terminate or
Multi-Stream Terminate application for the circuit you are
testing (see “Launching an application” on page 28), and
then select a test (see the appropriate procedure below):
– “Selecting a layer 2 test” on page 46
– “Selecting a layer 3 IP test” on page 120
– “Selecting a layer 4 TCP/UDP test” on page 165
– “Selecting a multiple streams test” on page 182
2 Initialize the Ethernet link (see “Initializing the link for
Ethernet testing” on page 47).
3 If you are looping back layer 3 or layer 4 traffic, establish
an IPoE connection or a PPPoE session:
– If you are transmitting IPv4 traffic, see “Establishing an
IPoE connection for IPv4 traffic” on page 122, or
“Establishing a PPPoE session” on page 128.
– If you are transmitting IPv6 traffic, see “Establishing an
IPoE connection for IPv6 traffic” on page 124 (single
stream tests only).
4 Configure the near end HST for your test. Depending on
the test you selected, see:
– “Configuring layer 2 Ethernet tests” on page 51.
– “Configuring layer 3 IP tests” on page 136.
– “Configuring layer 4 traffic” on page 167.
– “Enabling streams and specifying the traffic load” on
page 183 and “Configuring traffic streams” on
page 187
5 Press the Home button to view the test results display.
6 On the far end HST:
a If you are running a single-stream test, verify that the
applicable filter settings are either disabled or set to
Don’t Care, or that they match the settings for the
traffic transmitted from the near end HST.
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