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

Ryan Huff ryanhuff at outlook.com
Sun Oct 11 16:23:31 EDT 2015 

Here is the relevant portion of a isr4k humming along as we speak, with no clock slippage (excuse the scrunchiness of the output, SSHTerm on my iPad is limited and there is a Rocky marathon on TV ... so I ain't moving ;) ). Granted, this is one PRI and not 10 in two different modules but the concept should be the same.

The other thought I'd have is to make sure you are giving your desired clock interface the higher priority and not to have two clock sources at the same priority as this can cause issues with switch messaging.

card type t1 0 2
!
isdn switch-type primary-ni
!
network-clock synchronization automatic
network-clock synchronization participate 0/2
!
voice-card 0/2
dsp services dspfarm
!
controller T1 0/2/0
framing esf
linecode b8zs
!
clock source line primary
network-clock input-source 1 controller t1 0/2/0
cablelength long 0db
pri-group timeslots 1-24 voice-dsp
!
interface Serial0/2/0:23
encapsulation hdlc
isdn switch-type primary-ni
no cdp enable
!
rthlabrtr# 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 
T1 : 0/2/0
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 
*T1 0/2/0 NA NA/Dis 1 QL-SEC NA NA 
 
Sent from my iPad

> On Oct 11, 2015, at 3:15 PM, Jonathan Charles <jonvoip at gmail.com> wrote:
> 
> I think the automatic already handles that....
> 
> ILNOVOIPISR01(config)#network-clock synchronization participate 0/1  
> Slot 0 subslot 1 is already enabled for network clocking. Command Aborted.
> ILNOVOIPISR01(config)#
> 
> 
> 
> Jonathan
> 
>> On Sun, Oct 11, 2015 at 12:41 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
>> I'm assuming you also have network-clock synchronization participate 0/1 in your configuration?
>> 
>>  
>> Date: Sun, 11 Oct 2015 12:31:05 -0500
>> Subject: Re: [cisco-voip] slips on NIM-8MFT-T1/E1
>> From: jonvoip at gmail.com
>> To: ryanhuff at outlook.com
>> CC: nateccie at gmail.com; cisco-voip at puck.nether.net
>> 
>> 
>> ILNOVOIPISR01#show platform hardware subslot 0/1 module device networkclock
>> 
>>  primary clock 0, secondary clock 255, ntwk_clk_selected Yes, ntwk_clk_participate Yes, current clock = 0
>> PLL status= 1, and cntl = 17 
>> 
>> 
>> ILNOVOIPISR01#
>> 
>> 
>> ILNOVOIPISR01#show platform hardware subslot 0/2 module device networkclock
>> 
>>  primary clock 0, secondary clock 255, ntwk_clk_selected No, ntwk_clk_participate Yes, current clock = 0
>> PLL status= 1, and cntl = 7 
>> 
>> 
>> ILNOVOIPISR01#
>> 
>> 
>> 
>> Jonathan
>> 
>> On Sun, Oct 11, 2015 at 11:53 AM, Ryan Huff <ryanhuff at outlook.com> wrote:
>> What is the output of show platform hardware subslot 0/1 module device networkclock
>> 
>> assuming the slot/subslot of the desired line clock is on 0/1
>> 
>> Sent from my iPad
>> 
>> On Oct 11, 2015, at 12:42 PM, Jonathan Charles <jonvoip at gmail.com> wrote:
>> 
>> Yeah, but I can't enable it:
>> 
>> 
>> ILNOVOIPISR01(config)#network-clock participate 0 
>> G.781 based clock selection process is enabled Please unconfigure G.781 based configuration before configuring network-clock participate config command
>> ILNOVOIPISR01(config)#network-clock participate 1 
>> G.781 based clock selection process is enabled Please unconfigure G.781 based configuration before configuring network-clock participate config command
>> ILNOVOIPISR01(config)#
>> 
>> 
>> 
>> Jonathan
>> 
>> On Sun, Oct 11, 2015 at 8:58 AM, Ryan Huff <ryanhuff at outlook.com> wrote:
>> Although it appears you have it enabled, not having the network-clock participation set correctly will render the network-clock synchronization ineffective for the NIM with the port your trying to clock source on.
>> 
>> http://www.cisco.com/c/en/us/support/docs/routers/4000-series-integrated-services-routers/118792-config-isr-00.html
>> 
>> Sent from my iPad
>> 
>> On Oct 11, 2015, at 1:18 AM, Jonathan Charles <jonvoip at gmail.com> wrote:
>> 
>> I put the primary in and set the input source... still getting slips...
>> 
>> 
>> Jonathan
>> 
>> On Sat, Oct 10, 2015 at 11:08 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
>> 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
>> 
>> _______________________________________________
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>> cisco-voip at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-voip
>> 
>> 
>> 
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> 
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