Could be an IOS bug, we've seen some wierd stuff like that. Assuming
that it's Cisco's on each end, check what IOS version you're running.
What we observed was that small packets like 100 byte pings didn't
work, larger packets generated size and other errors...
George
> From: Carmen Chow <carmenc@hkt.net>
> To: cisco-nsp@puck.nether.net
> Subject: [nsp] OverSizedSDU and CrCErrors
>
> Hello,
>
> I got on PA-A3 on VIP2-50 (128M DRAM). There are 3 pvc to diff.
> destination.
>
> The first two pvc seems normal and fine but the third one got oversizedSDU
> and Crc Errors as below:-
>
> ATM10/0/0.3: VCD: 103, VPI: 2, VCI: 36, etype:0x800, AAL5 - MUX, Flags:
> 0x40033
> PeakRate: 120000, Average Rate: 80000, Burst Cells: 300, VCmode: 0x0
> OAM frequency: 10 second(s), InARP DISABLED
> InPkts: 252648441, OutPkts: 564716, InBytes: 2862013575, OutBytes:
> 185027861
> InPRoc: 156262, OutPRoc: 0, Broadcasts: 31837
> InFast: 195, OutFast: 5, InAS: 252491984, OutAS: 532874
> InPktDrops: 5, OutPktDrops: 0
> CrcErrors: 410563, SarTimeOuts: 0, OverSizedSDUs: 15665
> OAM F5 cells sent: 3153, OAM cells received: 3138
> Status: ACTIVE
>
> I've double checked the ATM PVC details with the end user but still got
> increment on CRC and Oversizedsdus intermittently. I've recorded 1000s on
> the counter increment. PVC utilization is around 50% full.
>
> Did anybody have the same experience before? Pls give me some hints.
> Thanks.
>
> Regards,
> Carmen Chow
> Email Address: carmenc@hkt.net
>
>
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