> Just found this thread while researching my own problems with DS3 and Cisco
> PA-T3 cards. I have a microwave radio provided DS3 between two buildings
> connected to a PA-T3 card in a 7206 router on one end and a PA-T3 in a
> Flex-wan module in a 6509 switch on the other side. I have had ongoing
> problems with the link dropping, carrier transitions, CRC errors, etc. But
> the radio statistics said it was running error free. There is very little
> useful configuration information for these PA-3T cards and Cisco TAC was no
> help. So I have been making configuration changes by trial and error to see
> what improves the situation. The point of all this is to let you know that I
> found setting both cards to "framing bypass" has greatly improved the
> interface error statistics.
Which IOS are you running? CSCdv67410 may be affecting you. Fixed in 12.2(7)
and above.
A Cisco 7200VXR router that is using any unchannelized serial port adapter (PA)
and any processor other than the Network Processing Engine(NPE-300) may
experience line flaps at high traffic rates and display the following message:
MUESLIX-1-HALT: Mx serial: Serial6/0 TPU halted: cause 0x3 status 0x00371A00
Carrier transitions and wedged output queues may also occur. This condition
affects the following port adapters:
- PA-T3
- PA-2T3
- PA-T3+
- PA-2T3+
Multichannel port adapters such as the PA-MC-T3 or the PA-MC-2T3+ are not
affected. This condition affects only the Cisco 7200VXR router. There is no
workaround.
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