Re: [Teas] question on the topology filter draft

[Loa Andersson <[e-mail]>]

Pavan,

This mail gives me more (and useful) inforamtion than the draft did, 
e.g. that topology filters are a new concept. And where to find related 
info, would you consider adding it in some for to the draft.

/Loa

On 10/11/2021 13:23, Vishnu Pavan Beeram wrote:
> Loa,
> 
> Please see inline (prefixed VPB)
> 
> Regards,
> -Pavan
> 
> 
> On Tue, Nov 9, 2021 at 11:57 AM Loa Andersson <[e-mail] 
> <mailto:[e-mail]>> wrote:
> 
>     WG, Pavan, authors,
> 
>     I was cut off at the end of the queue in the wg discussion. I had a
>     fairly simple question,
> 
>     Where the topology filter(s) defined
> 
> [VPB] The term “topology filter” is being introduced in 
> draft-bestbar-teas-yang-topology-filter (not aware of any other document 
> where it is defined). As per this data model draft, a “topology filter” 
> is a data construct that can be applied on either a native topology or a 
> customized topology to produce a filtered set of topological 
> elements. The native or customized topology referred to here is a TE 
> aware topology [RFC8795].
> 
>     and what benefits do we get from
>     using them?
> 
> [VPB] There are a couple of use-cases that are being targeted with this 
> construct.
> 
> (a) Specification of topology related constraints for TE path 
> computation (any setup type):
> A few examples:
> - Compute a path within a specific topology
> - Compute a path within the topology associated with a specific IGP domain
> - Compute a path within the topology learnt from a specific TE 
> Information Source
> - Compute a path within the topology defined by the application of one 
> or more topology-filters
> ** Say, a topology with elements that are learnt via ISIS Level-2 and 
> include resource-affinity red
> ** Or, a topology with elements associated with ISIS Flex-Algo 128 and 
> do not include resource-affinity blue
> 
> (b) Specification of filter-topology associated with a Network Resource 
> Partition
> 
> 
>     /Loa
>     -- 
> 
>     Loa Andersson                        email: [e-mail] <mailto:[e-mail]>
>     Senior MPLS Expert [e-mail] <mailto:[e-mail]>
>     Bronze Dragon Consulting             phone: [phone]
> 
>     _______________________________________________
>     Teas mailing list
>     [e-mail] <mailto:[e-mail]>
>     https://www.ietf.org/mailman/listinfo/teas
>     <https://www.ietf.org/mailman/listinfo/teas>
> 

-- 

Loa Andersson                        email: [e-mail]
Senior MPLS Expert                          [e-mail]
Bronze Dragon Consulting             phone: [phone]