[cisco-voip] slips on NIM-8MFT-T1/E1

[Ryan Huff]

This is how I've setup clocking on 4th gens before, and it always seems to use the line as the clock source when I have done it this way (network clock synchronization is disabled by default, so you may double check that it is enabled). 

Using your slot reference ...

rtr(config)# network-clock participation 0/1
rtr(config)# network-clock synchronization automatic
rtr(config)# controller t1 0/1/0
rtr(config)# clock source line primary
rtr(config)# network-clock input-source 1 controller t1 0/1/0

I have also found this guide to be useful: http://www.cisco.com/c/en/us/td/docs/routers/access/4400/feature/guide/isr4400netclock.html#pgfId-1023586

Thanks,

Ryan

Sent from my iPad

> On Oct 10, 2015, at 10:49 PM, Jonathan Charles <jonvoip at gmail.com> wrote:
> 
> ILVOIPISR01(config)#network-clock input-source 1 controller T1 0/1/0 
> % The clock source should be "line"
> 
> They are all set to line... however:

> 
> Why does it say internal:
> 
> ILNOVOIPISR01#show network-clocks synchronization 
> Symbols:     En - Enable, Dis - Disable, Adis - Admin Disable 
>              NA - Not Applicable 
>              *  - Synchronization source selected 
>              #  - Synchronization source force selected 
>              &  - Synchronization source manually switched 
> 
> Automatic selection process : Enable
> Equipment Clock : 2048 (EEC-Option1)
> Clock Mode : QL-Disable
> ESMC : Disabled
> SSM Option : 1 
> T0 : Internal 
> Hold-off (global) : 300 ms
> Wait-to-restore (global) : 300 sec
> Tsm Delay : 180 ms
> Revertive : No
> 
> Nominated Interfaces
> 
>  Interface            SigType     Mode/QL      Prio  QL_IN  ESMC Tx  ESMC Rx
> *Internal             NA          NA/Dis       251   QL-SEC    NA        NA       
> ILNOVOIPISR01#
> 
> 
> 
> 
> Jonathan
> 
>> On Sat, Oct 10, 2015 at 9:11 PM, NateCCIE . <nateccie at gmail.com> wrote:
>> Cisco changed everything again.  If you remember network-clock select with ISR G1, or the AIM-VOICE-30… When those first came out clocks were slipping all over the place with clock source line, because that wasn’t enough.
>> 
>>  
>> 
>> I am sorry if I am just behind everyone else and you’ve already done T1s on an ISR4k
>> 
>>  
>> 
>> http://www.cisco.com/c/en/us/support/docs/routers/4000-series-integrated-services-routers/118792-config-isr-00.html
>> 
>>  
>> 
>> I think this is right:
>> 
>>  
>> 
>> controller T1 0/1/0
>> 
>> framing esf
>> 
>> clock source line primary
>> 
>> linecode b8zs
>> 
>> cablelength long 0db
>> 
>> pri-group timeslots 1-24
>> 
>> !
>> 
>> controller T1 0/1/1
>> 
>> framing esf
>> 
>> clock source line secondary
>> 
>> linecode b8zs
>> 
>> cablelength long 0db
>> 
>> pri-group timeslots 1-24
>> 
>>  
>> 
>> network-clock synchronization automatic
>> 
>> network-clock input-source 1 controller T1 0/1/0
>> 
>> network-clock input-source 2 controller T1 0/1/1
>> 
>> 
>> 
>> Thanks,
>> 
>> -Nate
>> 
>> 
>>> On Sat, Oct 10, 2015 at 4:01 PM, Jonathan Charles <jonvoip at gmail.com> wrote:
>>> We have two NIM-8MFT-T1/E1s in a router for PRI termination...
>>> 
>>> On one of the 8-port cards, we have 7 PRIs in the same trunk group, on the other, 3 PRIs in the same trunk group.
>>> 
>>> We are seeing slips on all T1s.
>>> 
>>> This is a Ciisco 4351.
>>> 
>>> We have network-clock synchronization automatic, and I cannot find any better config....
>>> 
>>> All T1s are configured as B8ZS, ESF, Clock Source Line...
>>> 
>>> 
>>> controller T1 0/1/0
>>>  framing esf
>>>  linecode b8zs
>>>  cablelength long 0db
>>>  pri-group timeslots 1-24
>>> !
>>> 
>>> 
>>> Any ideas?
>>> 
>>> 
>>> 
>>> Jonathan
>>> 
>>> _______________________________________________
>>> cisco-voip mailing list
>>> cisco-voip at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/cisco-voip
> 
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