Re: POS Issues

Christian,

can't thank you enough on this. Last question: on the other side, I have PSE
increasing. Same thing?

On Thu, Aug 11, 2011 at 11:23 AM, Christian Hunter <stasis416_at_gmail.com>wrote:

>
>
> You have a lot of NSE there. This is typically due to synchronization
> problems (timing) on a link due to incorrect clock or degraded signal.
> (Might want to check light levels on either end, and db pad if needed, could
> be lack of attenuation). Have your provider check clocking, etc. The rate of
> NSE should not increase with load. Fiber might need cleaning.
>
> Cisco interfaces only report NSE based on what they see, the interface
> itself does not generate this.
>
> There is an acceptable level of NSE's per day but this depends on your
> clock stratum. Your provider can explain this to you.
>
> BIP3 errors are path level. The B3 byte carries the path parity. So are NSE
> errors, PATH.
>
> Tell your telco provider your seeing BIP(B3) and NSE from your router that
> holds POS4/1/0
> and that your clock source is LINE - give them the circuit ID your seeing
> those errors from.
>
> Good luck!
> Christian Hunter
>
>
>
>
>
> On Thu, Aug 11, 2011 at 9:57 AM, Persio Pucci <persio_at_gmail.com> wrote:
>
>> Sure, but I have cleared the counters after the last event, so I believe
>> that may not show any current issues... (hostname and IPs were changed to
>> protect the innocent)
>>
>> ROUTER#sh controllers pos 4/1/0
>> POS4/1/0
>> SECTION
>> LOF = 0 LOS = 0 BIP(B1) = 0
>> LINE
>> AIS = 0 RDI = 0 FEBE = 0 BIP(B2) = 0
>> PATH
>> AIS = 0 RDI = 0 FEBE = 0 BIP(B3) = 0
>> PLM = 0 UNEQ = 0 TIM = 0 TIU = 0
>> LOP = 0 NEWPTR = 0 PSE = 0 NSE = 32246
>>
>> Active Defects: None
>> Active Alarms: None
>> Alarm reporting enabled for: SF SLOS SLOF B1-TCA B2-TCA PLOP B3-TCA
>>
>> Framing: SDH
>> APS
>> working (active)
>> COAPS = 0 PSBF = 0
>> State: PSBF_state = False
>> Rx(K1/K2): 00/00 Tx(K1/K2): 00/00
>> Rx Synchronization Status S1 = 0B
>> S1S0 = 02, C2 = 16
>> Remote aps status (none); Reflected local aps status (none)
>> CLOCK RECOVERY
>> RDOOL = 0
>> State: RDOOL_state = False
>> PATH TRACE BUFFER: STABLE
>> Remote hostname : REMOTE
>> Remote interface: POS2/2/0
>> Remote IP addr : X.X.X.X
>> Remote Rx(K1/K2): 00/00 Tx(K1/K2): 00/00
>>
>> BER thresholds: SF = 10e-3 SD = 10e-6
>> TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
>>
>> Clock source: line
>>
>> ROUTER#
>>
>> On Thu, Aug 11, 2011 at 10:46 AM, Christian Hunter <stasis416_at_gmail.com>wrote:
>>
>>> Can you post a sh controller pos x/x/x
>>> for both of the interfaces on either side?
>>>
>>>
>>>
>>>
>>> On Thu, Aug 11, 2011 at 9:36 AM, Persio Pucci <persio_at_gmail.com> wrote:
>>>
>>>> Hi all,
>>>>
>>>> anybody with good experience with POS/SDH and some spare time? :)
>>>>
>>>> I am getting some B3 errors on a OC12 circuit I have. The (not) funny
>>>> thing
>>>> is that when I get the B3 errors, I have input errors and CRC errors
>>>> incremented ON BOTH SIDES of the circuit.
>>>>
>>>> Is this an issue on the SDH transport? Cause I've been researching about
>>>> it
>>>> and Cisco literature says B3 are path-level errors and most likely to be
>>>> caused by some router interface. If it is a router issue, what can I do
>>>> to
>>>> resolve it?
>>>>
>>>> Any thoughts?
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
>>>> _______________________________________________________________________
>>>> Subscription information may be found at:
>>>> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Thu Aug 11 2011 - 12:08:15 ART