JDS Uniphase IP Video Test Option HST-3000, User Manual

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Chapter 9 Troubleshooting
Resolving problems
254
HST-3000 Ethernet Testing User’s Guide
My Ping test is fail-
ing, but I’m certain
the device on the
far end is capable
of responding.
Determine whether there are
ICMP Echo filters on the
circuit, or if there are rate
limiters restricting the number
of ICMP packets.
Decrease the interval
between transmitted ping
packets.
I cannot establish
an IP connection
using stateful auto-
configuration. Stateful auto-configuration
obtains an IPv6 address
from a DHCPv6 server. The
server is not available. Use stateless auto-configu-
ration to let the HST auto-
matically generate an IPv6
address based on the MAC
address and the subnet pre-
fix returned by the router.
The HST will verify that the
address is not already used,
then the connection will be
established.
My unit is receiving
layer 4 traffic, but
delay measure-
ments, out of
sequence (OOS)
counts, lost frame
counts, and packet
jitter measure-
ments are not avail-
able. Certain test results must be
obtained using traffic that
carries an Acterna Test
Packet (ATP) payload. The
HST uses the ATP Listen
Port to determine whether
received layer 4 traffic car-
ries an ATP payload; Verify that the ATP Listen
Port on the receiving unit is
set to the Destination Port
specified for the traffic on the
transmitting unit. See
“Understanding the ATP Lis-
ten Port” on page 164
for an
explanation and illustration
of the required settings.
Table 14 Problems and resolutions (Continued)
Problem Description Resolution