[cisco-voip] sccp registration if IOS router left at sccp keyword version 4.1

[Pavan K]

If i am not mistaken,

the (ccm) version keyword in IOS is used by the router to determine the
Skinny version used to register with CCM.
As such a CCM v7.1 can very well understand its own skinny version and all
previous skinny versions.

That being said, an incompatible bug fix / enhancement is what causes a new
skinny version to being added.
so its generally recommended to be on the latest SK version.


On Wed, Jun 9, 2010 at 1:48 PM, Ryan Ratliff <rratliff at cisco.com> wrote:

> It wouldn't.
>
> Basically with the sccp version mismatching you can expect one of three
> things to happen.
> 1. No dspfarm media resources will register.
> 2. They will register, but calls will fail.
> 3. They will register, some calls will work, others will fail in strange
> and unpredictable ways.
>
> This one is guaranteed to happen every time.
> 4. TAC will yell at you to upgrade your IOS.
>
> -Ryan
>
> On Jun 9, 2010, at 2:42 PM, Jason Aarons (US) wrote:
>
> But this is for conferencing and transcoding, how would that impact the
> 7965 registration process?
>
> *From:* Lelio Fulgenzi [mailto:lelio at uoguelph.ca]
> *Sent:* Wednesday, June 09, 2010 2:35 PM
> *To:* Jason Aarons (US)
> *Cc:* cisco-voip
> *Subject:* Re: [cisco-voip] sccp registration if IOS router left at sccp
> keyword version 4.1
>
> i couldn't get a 7965 registered without the v7.1 keyword.
>
> ---
> Lelio Fulgenzi, B.A.
> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
> (519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Cooking with unix is easy. You just sed it and forget it.
>                               - LFJ (with apologies to Mr. Popeil)
>
>
> ----- Original Message -----
> From: "Jason Aarons (US)" <jason.aarons at us.didata.com>
> To: "cisco-voip" <cisco-voip at puck.nether.net>
> Sent: Wednesday, June 9, 2010 2:25:44 PM GMT -05:00 US/Canada Eastern
> Subject: [cisco-voip] sccp registration if IOS router left at sccp keyword
> version 4.1
>
>
> What happens if a router is left running with keyword version 4.1 but you
> upgrade Callmanager to 7.1(3b)SU2 ? I can’t seem to tell a problem, it looks
> like conf and transcoder stay registered, but surely there must be a reason
> the keyword got updated, etc.
>
> Older verion IOS 2811
> sccp
> sccp local fastethernet0/0
> sccp ccm 10.10.55.133 priority 1 version 4.1
> sccp ccm 10.10.55.132 priority 2 version 4.1
>
>
> Once you upgrade to 12.4.15 or higher you get keyword 7.0+
> sccp
> sccp local fastethernet0/0
> sccp ccm 10.10.55.133 priority 1 version 7.0+
> sccp ccm 10.10.55.132 priority 2 version 7.0+
>
>
>
> RouterTestIOS15-01(config)#sccp ccm 10.10.55.133 priority 1 version ?
>   3.0    Select CCM 3.0 version or above
>   3.1    Select CCM 3.1 version or above
>   3.2    Select CCM 3.2 version or above
>   3.3    Select CCM 3.3 version or above
>   4.0    Select CCM 4.0 version or above
>   4.1    Select CCM 4.1 version or above
>   5.0.1  Select CCM 5.0.1 version or above
>   6.0    Select CCM 6.0 version or above
>   7.0+   Select CCM 7.0 version or above
>
>
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-- 
- Pavan
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