3Com 3C63311 - SuperStack II PathBuilder S310 Bridge/router, Справочное руководство, Страница: 187 / 262

Managing System Alarms 175
Port Missing ICP
Cells Two consecutive ICP cells
missing from the IMA frame. See also Loss of IMA Frame (LIF) . This is
a specific cause of that alarm and will
also be reported.
RFI IMA
ATM Forum (R-121)
Remote Failure Indication: Far
end IMA Rx networking link
state machines detected LOS,
OOF, AIS. LCD, LIF or LODS. Correct T1 or E1 facilities error.
Test Pattern Failed An 8-bit pattern is sent to the
remote node which must then
echo it back on all ports. The
local node checks the echoed
pattern and reports an alarm if
cells from one or more of the
links fail to arrive. This alarm is
declared on all links which do
not reply or reply incorrectly. Make sure that the same number of
links are configured and enabled on
both ends of the IMA configuration.
Make sure that the configuration of
both groups is the same. For instance,
make sure that the payload scrambling
setting is the same on both ends.
Yellow Alarm OOF alarm is detected. A
received remote alarm
indication means that the far
end equipment has a problem
with the signal it is receiving
from the PathBuilder device. Connect an external loopback cable to
the port. If there are no alarms, the
problem is elsewhere. Check for an
open, short, or wiring error in the cable
between the PathBuilder network
interface port and your service
provider's network interface unit, or
the terminal equipment. An open
transmit pair can cause this condition
Table 28 DS1/E1 UNI Module Alarms (continued)
Alarm Meaning Troubleshooting Steps