Chapter 1 Getting Started
Test scenarios
HST-3000 Ethernet Testing User’s Guide
19
Verifying
throughput and
stressing the
network
In this scenario, you configure the HST to transmit various
loads of constant, ramped, and bursty traffic to stress the
circuit and verify the quality of the link in both directions.
To emulate results in a live network with bi-directional traffic,
a JDSU Ethernet test set must be connected to the network at
the far end, and a soft loopback must be established by
issuing a loop up command from the unit on the near end, or
by initiating a local loopback (LLB) from the far end unit. See
Figure 12 on page 19.
After establishing the loopback, terminate tests configured for
constant, ramped, and bursty loads of traffic are typically
performed.
Monitoring
statistics and
troubleshooting
traffic on a link
In this scenario, you configure the HST to monitor traffic or
pass traffic through at key points in the network. When you
configure the unit, you can specify settings that filter the
received traffic for analysis. For example, you can configure
the HST to display test results for all traffic carrying a specific
BERT pattern in the payload, or for all traffic originating from
a specific source address or VLAN.
Figure 12 Soft Loopback at far end
Transport
Network
Location A
Access Element
Location B
Access Element
HST-3000
R/T 2R/T 1
Rx Tx Rx Tx
HST-3000
R/T 2R/T 1
Rx Tx Rx Tx
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