NIM-2MFT-T1/E1 not showing up as serial interfaces for MPLS

[Travis-Fleming]

Hello. We have an ISR 4331/K9 with voice and security license on them. 

A show inventory shows our NIM card installed:

"NAME: "NIM subslot 0/2", DESCR: "NIM-2MFT-T1/E1 - T1/E1 Serial Module"
PID: NIM-2MFT-T1/E1 , VID: V05 , SN: FOC23354FUE"

I've configured the controllers as T1 as below from show controllers t1 command. However when I do a show ip int brief, I"m not seeing the serial interfaces as I would expect to configure the MPLS T1's? We will have 2 1.5 T1's setup in a multilink fashion.

What am I missing here? They don't have cables plugged in as I'm staging them at our HQ then shipping onsite to another state.

Router(config)#do sh controllers t1
T1 0/2/0 is down
Applique type is Channelized T1
Cablelength is long gain36 0db
Transmitter is sending remote alarm.
Receiver has loss of signal.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Failure LOF State:Clear
Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
BER thresholds: SF = 10e-3 SD = 10e-6
Data in current interval (3 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 3 Unavail Secs
Total Data (last 1 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 900 Unavail Secs
T1 0/2/1 is down
Applique type is Channelized T1
Cablelength is long gain36 0db
Transmitter is sending remote alarm.
Receiver has loss of signal.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Failure LOF State:Clear
Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
BER thresholds: SF = 10e-3 SD = 10e-6
Data in current interval (2 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 2 Unavail Secs
Total Data (last 1 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 900 Unavail Secs

[Travis-Fleming]

I was able to get them to show up, but they look different then I've seen before. I configured a multilink, then joined each controller to the channel-group as follows. I do see serial interface now, but they are labeled ending with a :1, guessing for the timeslot. Is the timeslot needed? I haven't seen this with our 2911's before. Also when I configure a laptop with the next hop IP of the MPLS connection and plug it in, nothing happens. And the right amber light stays solid on both interfaces.

serial0/2/0:1

serial0/2/1:1

Router(config)#int multilink 1
Router(config-if)#ip address X.X.X.X 255.255.255.252
Router(config-if)#encapsulation ppp
Router(config-if)#ppp multilink

Router(config)#controller t1 0/2/0
Router(config-controller)#channel-group 1 timeslots 1

Router(config)#controller t1 0/2/1
Router(config-controller)#channel-group 1 timeslots 1

[Georg Pauwen]

Hello,

check if you have configured 'network-clock synchronization automatic' configured globally. The clocking on the E1/T1 modules is different on the ISR 4K routers...

Check the link below for reference:

Configuring the Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module

https://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/NIM/software/configuration/guide/4gen-t1-e1-nim-guide.html

[Travis-Fleming]

Thanks George. I tried that and still shows error on the card, and no up status. Below is what I have in running config now.

EDIT: Both the yellow and green lights on the NIM are solid now as apposed to just solid yellow before

network-clock synchronization automatic

!

controller T1 0/2/0
threshold sd-ber 6
threshold sf-ber 3
framing esf
clock source network
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1
!
controller T1 0/2/1
threshold sd-ber 6
threshold sf-ber 3
framing esf
clock source network
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1

!

interface Multilink1
ip address X.X.X.X 255.255.255.252
ppp multilink
ppp multilink group 1

[Georg Pauwen]

Hello,

your T1 receivers have a loss of signal, this usually indcates some sort of cabling problem...

Try and disable backplane clock participation with the command:

--> no network-clock synchronization participate [slot | subslot]

Also, remove the 'clock source' from the controllers...

controller T1 0/2/0
threshold sd-ber 6
threshold sf-ber 3
framing esf
--> no clock source network
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1
!
controller T1 0/2/1
threshold sd-ber 6
threshold sf-ber 3
framing esf
--> no clock source network
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1

[Travis-Fleming]

Thank you for the reply. Now however I just have solid yellow lights on the interface. Below is current running config as it relates to the card.

controller T1 0/2/0
threshold sd-ber 6
threshold sf-ber 3
framing esf
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1
!
controller T1 0/2/1
threshold sd-ber 6
threshold sf-ber 3
framing esf
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1

network-clock synchronization automatic
no network-clock synchronization participate 0/2

[Georg Pauwen]

Hello,

what if you use 'clock source line' ?

[Travis-Fleming]

Same result. Must be the default because when I put that on the controller it doesn't show in a running config, even after a restart.

Seems like this should be simpler? New 4331 router, new NIM card, need to setup a bonded T1 multilink for MPLS connection. Attached is my running config now including a show inventory and ip int brief.

[Georg Pauwen]

Hello,

the values to be used usually are provided by your ISP, so it becomes a bit of guesswork what you need.

On the controllers, try 'clock source internal' which I think goes with the channel-group:

controller T1 0/2/0
threshold sd-ber 6
threshold sf-ber 3
framing esf
linecode b8zs
--> clock source internal
cablelength long 0db
channel-group 1 timeslots 1
!
controller T1 0/2/1
threshold sd-ber 6
threshold sf-ber 3
framing esf
linecode b8zs
--> clock source internal
cablelength long 0db
channel-group 1 timeslots 1

If that doesn't make any difference, also try 'fdl both' on the controllers...

[Travis-Fleming]

Would it help to have the config from the current 2911 device with 2 WIC T1 cards currently running? They don't have 2 T1's yet, we have that on order, we only have a single 1.5 MBps T1 today. Below is the serial interface config of the current 2911 router we're replacing with this 4331. I will try your settings as well. I'll note again, the new router is sitting in my datacenter, and it's replacing a router across the country. I only have a laptop I can hook up to the T1 interfaces. I also put in a ticket with CenturyLInk to see if they can provide me with any sort of direction.

interface Serial0/0/0
description CID-Centurylink DS1IT-XXXX
ip address X.X.X.X 255.255.255.252
ip flow ingress
ip flow egress
no service-module t1 remote-loopback full
service-module t1 timeslots 1-24
service-policy output wanedge

[Georg Pauwen]

Hello,

the config is different on the ISR. I am pretty sure there is something missing with regard to the clocking. Try and globally configure:

clock source line primary
network-clock input-source 1 controller t1 0/2/0

[Travis-Fleming]

This is what I was able to configure. Let me know. Still not able to get a link light on my laptop directly connected, and the multilink and serial interfaces say down. 

network-clock synchronization automatic
network-clock input-source 1 controller T1 0/2/0

controller T1 0/2/0
threshold sd-ber 6
threshold sf-ber 3
framing esf
clock source line primary
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1
!
controller T1 0/2/1
threshold sd-ber 6
threshold sf-ber 3
framing esf
clock source internal
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1

[Georg Pauwen]

Hello,

I found a bug related to the lines:

threshold sd-ber 6
threshold sf-ber 3

These are not supposed to be in the configuration of the 4331, can you try and remove them ?

[Travis-Fleming]

I cannot remove them...

wt-latx-mpls-rt01(config)#controller t1 0/2/0
wt-latx-mpls-rt01(config-controller)#no threshold sd-ber 6
wt-latx-mpls-rt01(config-controller)#no threshold sf-ber 3
wt-latx-mpls-rt01(config-controller)#exit
wt-latx-mpls-rt01(config)#exit
wt-latx-mpls-rt01#sh run | sect controller
controller T1 0/2/0
threshold sd-ber 6
threshold sf-ber 3
framing esf
linecode b8zs
cablelength long 0db
channel-group 1 timeslots 1

The ISP did also get back to me on clock settings, and they said the below. I've set those settings as well, still no joy.

From the ISP:

"Hello customer this circuit is set as B8zs frame esf and you should go with  the defaults and set the clock source to line."

[Georg Pauwen]

Hello,

try 'cablelength short'. I am pretty sure the problem is at layer 1...

Also, try to change the encapsulation on the multilink interface to HDLC and back to PPP:

Router(config)#int multilink 1
Router(config-if)#ip address X.X.X.X 255.255.255.252
Router(config-if)#encapsulation hdlc

Router(config-if)#shut 

Router(config-if)#no shut 

Router(config-if)#encapsulation ppp
Router(config-if)#ppp multilink