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Caveats
Caveat
CSCsy82914
CSCsy85741
CSCsz12116
Release Notes for Cisco RF Gateway 10 in Cisco IOS Release 12.2SQ
50
Description
Symptoms: The Cisco RFGW-10 DS-48 line card hardware control process crashes
and the line card does not respond to user configuration.
Conditions: This issue occurs when the user exercises the Supervisor CLI
command show cable linecard cpuload to query the line card CPU utilization too
many times (> 1000). This causes a line card IPC failure due to the memory leak
by the CPU process routine.
Workaround: If not necessary, do not query the line card CPU too often. For
DOCSIS application, the average CPU load on lime card should be an average of
around 30% ~ 40% maximum.
Symptoms: The following messages are displayed during a QAM configuration:
00:36:27: %RFGW-3-UNEXPECTED: Cold not allocate qam database rollback
buffer
Conditions: This happens while configuring a large number of QAMs using a
combination of the following commands:
cable downstream stacking 1
cable depi offset
no cable downstream rf-shutdown
Workaround: Set the stacking level on all ports to "4" while configuring the DEPI
offset and executing the rf-shutdown command, and then set the stacking level to
"1".
Symptoms: Cable modems drop off line after the Cisco RFGW-10 DS-48 line card
switchover or switchback.
Conditions: This happens when more than 250 sessions configured across the
chassis. This behavior is seen in both Cisco IOS Release 12.2(44)SQ and
12.2(44)SQ1 images.
Workaround: Avoid sending DEPI data traffic from CMTS to unused QAM ports
when "1" RF stacking value is confided, thus reducing the chances of cable
modems dropping off line at line card switchover.
OL-18677-10
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