Re: [yang-doctors] Yangdoctors last call review of draft-ietf-bfd-yang-09

2018-02-21 Thread Jeffrey Haas 
On Sun, Feb 18, 2018 at 03:28:13AM +, Reshad Rahman (rrahman) wrote:
> Hi Acee,
> 
> What I meant is that BFD always augments the control palne protocols in 
> ietf-routing model. And the BFD augmentation can be used as-is or mounted in 
> LNE or in NI.

Basically:
Whereever ietf-routing is, BFD may also be.

BFD may not be everywhere that ietf-routing is (e.g. it may or may not be in
an instance, depending on device capabilities).

-- Jeff

Re: [yang-doctors] Yangdoctors last call review of draft-ietf-bfd-yang-09

2018-02-17 Thread Reshad Rahman (rrahman) 
Hi Acee,

What I meant is that BFD always augments the control palne protocols in 
ietf-routing model. And the BFD augmentation can be used as-is or mounted in 
LNE or in NI.

Regards,
Reshad.

On 2018-02-17, 7:46 PM, "Acee Lindem (acee)"  wrote:

Hi Reshad, 
Are you saying that BFD would never augment the list of control place 
protocols in ietf-routing and always be at the root of the tree (whether it be 
the device, LNE, or NI)? I guess it doesn't have to be in the list since it 
will never install routes in the routing table. 

Thanks,
Acee

On 2/17/18, 5:26 PM, "Reshad Rahman (rrahman)"  wrote:

Ietf-bfd augments the ietf-routing model, that's not conditional. How 
the ietf-bfd model is used may vary:
1) It may be used "directly" in a device (i.e no schema mount)
2) It may be schema mounted for use in an LNE
3) It may be schema mounted for use in a VRF

I thought this was the case for all routing protocols.

Regards,
Reshad.

On 2018-02-17, 1:31 PM, "Acee Lindem (acee)"  wrote:

I thought about that after I replied. I guess you are saying that 
it is conceivable for a network device to support ietf-bfd but not support 
routing (ietf-routing)? 

Thanks,
Acee 

On 2/17/18, 1:24 PM, "Reshad Rahman (rrahman)"  
wrote:

Right, schema-mount can be used in some cases (logical device 
or in a VRF) but doesn’t have to be used in other cases (e.g. network device 
which doesn't support VRFs). We will clarify the text, at a certain time we 
incorrectly thought that schema mount had to be used in all cases.

Regards,
Reshad.

On 2018-02-17, 3:56 AM, "Juergen Schoenwaelder" 
 wrote:

On Fri, Feb 16, 2018 at 11:11:28PM +, Acee Lindem 
(acee) wrote:

> * Design of the Data Model
> 
>   - Do I always have to use schema mount to use these 
YANG models? If
> so, one might consider 
I-D.ietf-netmod-schema-mount a normative
> reference. Are you not augmenting the routing 
model?
> 
> This Is definitely not the case. This model will augment 
RFC8022BIS. The question on how to do is being discussion on the YANG doctors 
list. 
>

This is what I thought but the text is kind of misleading:

   BFD can operate in the following contexts:

   [...]

   The approach taken is to do a schema-mount (see Schema 
Mount
   [I-D.ietf-netmod-schema-mount]) of the BFD model in the 
appropriate
   locations.

/js

-- 
Juergen Schoenwaelder   Jacobs University Bremen 
gGmbH
Phone: +49 421 200 3587 Campus Ring 1 | 28759 
Bremen | Germany
Fax:   +49 421 200 3103

Re: [yang-doctors] Yangdoctors last call review of draft-ietf-bfd-yang-09

2018-02-17 Thread Acee Lindem (acee) 
Hi Reshad, 
Are you saying that BFD would never augment the list of control place protocols 
in ietf-routing and always be at the root of the tree (whether it be the 
device, LNE, or NI)? I guess it doesn't have to be in the list since it will 
never install routes in the routing table. 

Thanks,
Acee

On 2/17/18, 5:26 PM, "Reshad Rahman (rrahman)"  wrote:

Ietf-bfd augments the ietf-routing model, that's not conditional. How the 
ietf-bfd model is used may vary:
1) It may be used "directly" in a device (i.e no schema mount)
2) It may be schema mounted for use in an LNE
3) It may be schema mounted for use in a VRF

I thought this was the case for all routing protocols.

Regards,
Reshad.

On 2018-02-17, 1:31 PM, "Acee Lindem (acee)"  wrote:

I thought about that after I replied. I guess you are saying that it is 
conceivable for a network device to support ietf-bfd but not support routing 
(ietf-routing)? 

Thanks,
Acee 

On 2/17/18, 1:24 PM, "Reshad Rahman (rrahman)"  
wrote:

Right, schema-mount can be used in some cases (logical device or in 
a VRF) but doesn’t have to be used in other cases (e.g. network device which 
doesn't support VRFs). We will clarify the text, at a certain time we 
incorrectly thought that schema mount had to be used in all cases.

Regards,
Reshad.

On 2018-02-17, 3:56 AM, "Juergen Schoenwaelder" 
 wrote:

On Fri, Feb 16, 2018 at 11:11:28PM +, Acee Lindem (acee) 
wrote:

> * Design of the Data Model
> 
>   - Do I always have to use schema mount to use these 
YANG models? If
> so, one might consider I-D.ietf-netmod-schema-mount a 
normative
> reference. Are you not augmenting the routing model?
> 
> This Is definitely not the case. This model will augment 
RFC8022BIS. The question on how to do is being discussion on the YANG doctors 
list. 
>

This is what I thought but the text is kind of misleading:

   BFD can operate in the following contexts:

   [...]

   The approach taken is to do a schema-mount (see Schema Mount
   [I-D.ietf-netmod-schema-mount]) of the BFD model in the 
appropriate
   locations.

/js

-- 
Juergen Schoenwaelder   Jacobs University Bremen gGmbH
Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | 
Germany
Fax:   +49 421 200 3103

Re: [yang-doctors] Yangdoctors last call review of draft-ietf-bfd-yang-09

2018-02-17 Thread Reshad Rahman (rrahman) 
Ietf-bfd augments the ietf-routing model, that's not conditional. How the 
ietf-bfd model is used may vary:
1) It may be used "directly" in a device (i.e no schema mount)
2) It may be schema mounted for use in an LNE
3) It may be schema mounted for use in a VRF

I thought this was the case for all routing protocols.

Regards,
Reshad.

On 2018-02-17, 1:31 PM, "Acee Lindem (acee)"  wrote:

I thought about that after I replied. I guess you are saying that it is 
conceivable for a network device to support ietf-bfd but not support routing 
(ietf-routing)? 

Thanks,
Acee 

On 2/17/18, 1:24 PM, "Reshad Rahman (rrahman)"  wrote:

Right, schema-mount can be used in some cases (logical device or in a 
VRF) but doesn’t have to be used in other cases (e.g. network device which 
doesn't support VRFs). We will clarify the text, at a certain time we 
incorrectly thought that schema mount had to be used in all cases.

Regards,
Reshad.

On 2018-02-17, 3:56 AM, "Juergen Schoenwaelder" 
 wrote:

On Fri, Feb 16, 2018 at 11:11:28PM +, Acee Lindem (acee) wrote:

> * Design of the Data Model
> 
>   - Do I always have to use schema mount to use these YANG 
models? If
> so, one might consider I-D.ietf-netmod-schema-mount a 
normative
> reference. Are you not augmenting the routing model?
> 
> This Is definitely not the case. This model will augment 
RFC8022BIS. The question on how to do is being discussion on the YANG doctors 
list. 
>

This is what I thought but the text is kind of misleading:

   BFD can operate in the following contexts:

   [...]

   The approach taken is to do a schema-mount (see Schema Mount
   [I-D.ietf-netmod-schema-mount]) of the BFD model in the 
appropriate
   locations.

/js

-- 
Juergen Schoenwaelder   Jacobs University Bremen gGmbH
Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | 
Germany
Fax:   +49 421 200 3103

Re: [yang-doctors] Yangdoctors last call review of draft-ietf-bfd-yang-09

2018-02-17 Thread Acee Lindem (acee) 
I thought about that after I replied. I guess you are saying that it is 
conceivable for a network device to support ietf-bfd but not support routing 
(ietf-routing)? 

Thanks,
Acee 

On 2/17/18, 1:24 PM, "Reshad Rahman (rrahman)"  wrote:

Right, schema-mount can be used in some cases (logical device or in a VRF) 
but doesn’t have to be used in other cases (e.g. network device which doesn't 
support VRFs). We will clarify the text, at a certain time we incorrectly 
thought that schema mount had to be used in all cases.

Regards,
Reshad.

On 2018-02-17, 3:56 AM, "Juergen Schoenwaelder" 
 wrote:

On Fri, Feb 16, 2018 at 11:11:28PM +, Acee Lindem (acee) wrote:

> * Design of the Data Model
> 
>   - Do I always have to use schema mount to use these YANG 
models? If
> so, one might consider I-D.ietf-netmod-schema-mount a 
normative
> reference. Are you not augmenting the routing model?
> 
> This Is definitely not the case. This model will augment RFC8022BIS. 
The question on how to do is being discussion on the YANG doctors list. 
>

This is what I thought but the text is kind of misleading:

   BFD can operate in the following contexts:

   [...]

   The approach taken is to do a schema-mount (see Schema Mount
   [I-D.ietf-netmod-schema-mount]) of the BFD model in the appropriate
   locations.

/js

-- 
Juergen Schoenwaelder   Jacobs University Bremen gGmbH
Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103

Re: [yang-doctors] Yangdoctors last call review of draft-ietf-bfd-yang-09

2018-02-17 Thread Reshad Rahman (rrahman) 
Right, schema-mount can be used in some cases (logical device or in a VRF) but 
doesn’t have to be used in other cases (e.g. network device which doesn't 
support VRFs). We will clarify the text, at a certain time we incorrectly 
thought that schema mount had to be used in all cases.

Regards,
Reshad.

On 2018-02-17, 3:56 AM, "Juergen Schoenwaelder" 
 wrote:

On Fri, Feb 16, 2018 at 11:11:28PM +, Acee Lindem (acee) wrote:

> * Design of the Data Model
> 
>   - Do I always have to use schema mount to use these YANG models? If
> so, one might consider I-D.ietf-netmod-schema-mount a normative
> reference. Are you not augmenting the routing model?
> 
> This Is definitely not the case. This model will augment RFC8022BIS. The 
question on how to do is being discussion on the YANG doctors list. 
>

This is what I thought but the text is kind of misleading:

   BFD can operate in the following contexts:

   [...]

   The approach taken is to do a schema-mount (see Schema Mount
   [I-D.ietf-netmod-schema-mount]) of the BFD model in the appropriate
   locations.

/js

-- 
Juergen Schoenwaelder   Jacobs University Bremen gGmbH
Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103

Re: [yang-doctors] Yangdoctors last call review of draft-ietf-bfd-yang-09

2018-02-17 Thread Juergen Schoenwaelder 
On Fri, Feb 16, 2018 at 11:11:28PM +, Acee Lindem (acee) wrote:

> * Design of the Data Model
> 
>   - Do I always have to use schema mount to use these YANG models? If
> so, one might consider I-D.ietf-netmod-schema-mount a normative
> reference. Are you not augmenting the routing model?
> 
> This Is definitely not the case. This model will augment RFC8022BIS. The 
> question on how to do is being discussion on the YANG doctors list. 
>

This is what I thought but the text is kind of misleading:

   BFD can operate in the following contexts:

   [...]

   The approach taken is to do a schema-mount (see Schema Mount
   [I-D.ietf-netmod-schema-mount]) of the BFD model in the appropriate
   locations.

/js

-- 
Juergen Schoenwaelder   Jacobs University Bremen gGmbH
Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103