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cisco 6500 with enhanced flexwan troubleshooting port adapter issues

Hi, Im hoping someone can help to further troubleshoot this issue. I have a couple of 6500, sup 720, running IOS using enhanced flexwans with channelize T3 PAs and non channelized PAs. Recently I have been running into issues where the PAs will stop passing traffic out of  the blue. When looking at this issue as best as I can, the channelize PAs show down/down on all ports but doing a show controller T3 x/x/x reveals that there is nothing wrong with the actual T3 and its showing up and with no alarms. So basically the PA stops passing traffic, in this case ip. I can't ping the remote side nor do I see anything in the logs. When doing a show diagnostic events module X I don’t see nothing wrong, also when login in to the actual flexwan and looking at the flexwan log I don’t see anything on the log, although recently I did notice the CPU on the flexwan spiked to 100% last time this happened, about 18 hours ago, although im not sure if this happens all the time. The only thing that will help solve this problem is to power cycle the slot that the flexwan is on.

My question is how can I troubleshoot this flexwan/PA issue, what should I be looking for, so far the show diagnostic events xxx hasn't help me much and I don’t see anything on the logs. not sure if there is another command or a better way to troubleshoot PA/flexwan issues. I also looked at the cisco bugtool kit for the IOS im using and I don’t see anything related to the issues im having.

any help is appreciated, paul

System image file is "disk0:s72033-advipservicesk9_wan-mz.122-33.SXI4a.bin"

10    0  2 port adapter Enhanced FlexWAN        WS-X6582-2PA

flexwan/pa info:

Slot 10: Logical_index 20

        2 port adapter Enhanced FlexWAN controller

        Board is analyzed ipc ready

        HW rev 1.5, board revision A0

        Serial Number: JAB090400FF Part number: 73-8273-09

        Slot database information:

        Flags: 0x2004   Insertion time: 0x17F81421C (18:02:25 ago)

        Controller Memory Size:

                384 MBytes CPU Memory

                127 MBytes Packet Memory

                511 MBytes Total on Board SDRAM

        Cisco IOS Software, cwlc Software (cwpa2-DW-M), Version 12.2(33)SXI4a, RELEAS

E SOFTWARE (fc2)

Slot 10: Logical_index 21

        2 port adapter Enhanced FlexWAN controller

        Board is analyzed ipc ready

        HW rev 1.5, board revision A0

        Serial Number: JAB090400FF Part number: 73-8273-09

        Slot database information:

        Flags: 0x2004   Insertion time: 0x17F815C94 (18:02:19 ago)

        Controller Memory Size:

                384 MBytes CPU Memory

                127 MBytes Packet Memory

                511 MBytes Total on Board SDRAM

        Cisco IOS Software, cwlc Software (cwpa2-DW-M), Version 12.2(33)SXI4a, RELEAS

E SOFTWARE (fc2)

        PA Bay 1 Information:

                CT3 single wide PA, 1 port

                EEPROM format version 1

                HW rev 1.00, Board revision A0

                Serial number: 16746558  Part number: 73-3037-01

100                  *

90                  *

80                  *

70                  *

60                  *

50                  *

40          *       *

30          *       *

20          *       *

10 ****  *  *       *

   0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.

             0    5    0    5    0    5    0    5    0    5    0    5    0

                   CPU% per hour (last 72 hours)

                  * = maximum CPU%   # = average CPU%

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