Net research NetProbe 2000 User Manual page 177

Patterns
15-1 20-1 23-1 23-1
Patter choices include: All 1's, All 0's, 1:1, 1:3, 2:2, 5:32, 2 , 2 , 2 , 2 .
Test Type
The selection for Test Type determines the ISO layer (Layer 1 – Layer 4) that you wish to carry the pattern data.
Layer 1 Framed – The selected BERT pattern is encapsulated with SOF, Preamble and CRC.
Layer 2 to Layer 4 – The selected BERT pattern is encapsulated with MAC (Media Access Control) address, in addition to
SOF, Preamble and CRC. This MAC address is a source address for all streams. The default MAC value should have been
previously preset in the Ethernet SETUP menu.
When testing on Layer 2-4, additional filtering parameters can be setup for a specific MAC, one to two VLAN tags, one to
two MPLS tags and a UDP PORT ID.
Layer 2 – supports up to (2) VLAN tags
Layer 3 – supports up to (2) VLAN tags and (2) MPLS tags
Layer 4 – supports up to (2) VLAN tags and (2) MPLS tags and a UDP port
Each is illustrated below.
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