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

Sun Oct 11 13:41:57 EDT 2015

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 = 0PLL 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 = 0PLL 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 commandILNOVOIPISR01(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 commandILNOVOIPISR01(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 0/1rtr(config)# network-clock synchronization automaticrtr(config)# controller t1 0/1/0rtr(config)# clock source line primaryrtr(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 : EnableEquipment Clock : 2048 (EEC-Option1)Clock Mode : QL-DisableESMC : DisabledSSM Option : 1 T0 : Internal Hold-off (global) : 300 msWait-to-restore (global) : 300 secTsm Delay : 180 msRevertive : 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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