[cisco-voip] T1 PRI configuration on 2921 not matching startup config

[NateCCIE]

The router gets the whole config snip it CUCM thinks it needs via TFTP.  If you don’t want cucm to configure the ports, then you don’t put a config on the ports in CUCM.

 

I agree with Evgeny, it looks like the router is short DSPs for the PRIs.

 

-Nate

 

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi
Sent: Monday, October 2, 2017 6:16 PM
To: Evgeny Izetov <eizetov at gmail.com>
Cc: Cisco VoIP Group <cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] T1 PRI configuration on 2921 not matching startup config

 

 

That was definitely one issue. I was pretty sure I entered that command manually, but apparently not. So that's why the last one did not come up. 

 

Still very weird. I had always assumed that the router asked for the configuration for enabled ports only. 

Sent from my iPhone


On Oct 2, 2017, at 6:24 PM, Evgeny Izetov <eizetov at gmail.com <mailto:eizetov at gmail.com> > wrote:

I wonder if you only had enough DSPs for those 2 and 1/3 PRIs.

 

On Oct 2, 2017 4:02 PM, "Lelio Fulgenzi" <lelio at uoguelph.ca <mailto:lelio at uoguelph.ca> > wrote:

 

Well, apparently, CUCM enabling of ports overrides the router configuration. 

 

I did have all four ports configured. After deleting those two ports, the running now matches the startup.

 

This is very weird. Is there a configuration command that says only download configuration for the ports I’ve enabled?

 

 

 

---

Lelio Fulgenzi, B.A.

Senior Analyst, Network Infrastructure

Computing and Communications Services (CCS)

University of Guelph

 

519-824-4120 Ext 56354 <tel:(519)%20824-4120> 

lelio at uoguelph.ca <mailto:lelio at uoguelph.ca> 

www.uoguelph.ca/ccs <http://www.uoguelph.ca/ccs> 

Room 037, Animal Science and Nutrition Building

Guelph, Ontario, N1G 2W1

 

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net <mailto:cisco-voip-bounces at puck.nether.net> ] On Behalf Of Lelio Fulgenzi
Sent: Monday, October 02, 2017 2:29 PM
To: voyp list, cisco-voip (cisco-voip at puck.nether.net <mailto:cisco-voip at puck.nether.net> )
Subject: [cisco-voip] T1 PRI configuration on 2921 not matching startup config

 

 

OK – Having a weird issue. I was pretty sure that the router config took precedence over CUCM (with respect to enabling ports). 

 

I’ve got four of  the four ports configured on CUCM. So not sure why three are being configured on the router.

 

Very strange!

 

My startup looks something like this:

 

controller T1 0/0/0

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

controller T1 0/0/1

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

controller T1 0/0/2

shutdown

cablelength long 0db

!

controller T1 0/0/3

shutdown

cablelength long 0db

!

<snip>

!

interface Serial0/0/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-dms100

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

interface Serial0/0/1:23

no ip address

encapsulation hdlc

isdn switch-type primary-dms100

isdn incoming-voice voice

isdn bind-l3 ccm-manager

isdn bchan-number-order ascending

no cdp enable

<snip>

voice-port 0/0/0:23

echo-cancel coverage 64

!

voice-port 0/0/1:23

!

 

 

 

But after a reload, my running config looks something like this:

 

controller T1 0/0/0

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

controller T1 0/0/1

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

controller T1 0/0/2

cablelength long 0db

pri-group timeslots 1-8,24 service mgcp

!

controller T1 0/0/3

cablelength long 0db

!

<snip>

interface Serial0/0/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-dms100

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

interface Serial0/0/1:23

no ip address

encapsulation hdlc

isdn switch-type primary-dms100

isdn protocol-emulate network

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

interface Serial0/0/2:23

no ip address

encapsulation hdlc

isdn switch-type primary-dms100

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

<snip>

!

voice-port 0/0/0:23

echo-cancel coverage 64

!

voice-port 0/0/1:23

echo-cancel coverage 64

!

voice-port 0/0/2:23

echo-cancel coverage 64

 

---

Lelio Fulgenzi, B.A.

Senior Analyst, Network Infrastructure

Computing and Communications Services (CCS)

University of Guelph

 

519-824-4120 Ext 56354 <tel:(519)%20824-4120> 

lelio at uoguelph.ca <mailto:lelio at uoguelph.ca> 

www.uoguelph.ca/ccs <http://www.uoguelph.ca/ccs> 

Room 037, Animal Science and Nutrition Building

Guelph, Ontario, N1G 2W1

 


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