I would disagree with the statement that an FB-Rib uses an
Event-Condition_action policy.
Filters are not events. they may be represented as a subclass of
conditions, but even that is not clear. And the actions in an FB-RIB
are probably better thought of as RIB resutls than as actions.
At the same time, there are a lot of properties needed by a general
policy system (such as SUPA) that are not needed by FB-RIB filters /
forwarding entries.
So I would tend to suggest that coupling this to the general policy
problem is merely hindering our ability to get things done.
Yours,
Joel
On 1/4/16 5:33 PM, Susan Hares wrote:
Joel:
On #1) the dependency between I2RS Filter-based RIB (FB-RIB) and ECA,
please see draft-kini-i2rs-fb-rib-info-model-02.txt. In section 1.1, it
gives the definition of the FB-RIB. In section 1.2, it links this to an
event-condition-action model. If you disagree with the definition of
I2RS FB-RIB, then we should probably restrict this conversation to the
I2RS mail list. Any feedback on the Info-model or data-model would be
helpful. The authors hoped to go to a WG adoption call at the end of
this week.
One challenge for the ephemeral I2RS FB-RIB, is there is no definition
of the non-ephemeral FB-RIB. If you think there should be a
non-ephemeral FB-RIB – that discussion may be useful between I2RS,
Netmod and SUPA.
On #2) SUPA ECA model, I agree that we should be able to have a common
draft. At IETF 94, I raised issues regarding the SUPA versus my ECA
definition.
Cheerily,
Sue
-----Original Message-----
From: Joel M. Halpern [mailto:[email protected]]
Sent: Monday, January 04, 2016 3:54 PM
To: Susan Hares; [email protected]; [email protected]; [email protected]
Subject: Re: [i2rs] FW: New Version Notification for
draft-hares-i2rs-bnp-eca-data-model-03.txt
I think there are two issues here.
1) It is not clear to me why there is any dependence of the fb-rib data
model on an eca data model. While supa does allow for policy model to
be sent directly to the router, it also allows many other cases.
2) The approach with the supa eca data model is still under development.
Having said that, the material in there is intended to be very
general. From what I understand, there should be no difficulty in
refining the action side of that model to actions which affect the
fb-rib in ways that are consistent with the fb-dib data model.
Yours,
Joel
On 1/4/16 2:01 PM, Susan Hares wrote:
> This model provides a Event-Condition-Action (ECA) policy model.
> The I2RS FB-RIB yang data model utilizes this model, but to my
> knowledge the Netmod or netconf has not adopted an ECA policy model to
> parallel the ACL model.
>
> Chen and co-authors have created the model:
>
> draft-chen-supa-eca-data-model-05.txt
>
> But it does not align with this yang model or seem sufficient to
> support the FB-RIB information model. At IETF 94,
> I presented a discussion of the issues I found with the
> draft-chen-supa-eca-data-model-05.txt, but it has not been updated.
> We would appreciate feedback on this version of yang model.
>
> <i2rs Chair hat on>
> In my role as I2RS chair, I2RS needs to make progress soon on the
> I2RS FB-RIB data model. We would appreciate your aid.
> <i2rs chair hat off>
>
> Sue
>
> -----Original Message-----
> From: [email protected] <mailto:[email protected]>
[mailto:[email protected]]
> Sent: Monday, January 04, 2016 12:04 PM
> To: Susan Hares; Qin Wu; Russ White
> Subject: New Version Notification for
> draft-hares-i2rs-bnp-eca-data-model-03.txt
>
>
> A new version of I-D, draft-hares-i2rs-bnp-eca-data-model-03.txt
> has been successfully submitted by Susan Hares and posted to the IETF
repository.
>
> Name: draft-hares-i2rs-bnp-eca-data-model
> Revision: 03
> Title: An Information Model for Basic Network Policy
and Filter Rules
> Document date: 2016-01-04
> Group: Individual Submission
> Pages: 30
> URL:
https://www.ietf.org/internet-drafts/draft-hares-i2rs-bnp-eca-data-model-03.txt
> Status:
https://datatracker.ietf.org/doc/draft-hares-i2rs-bnp-eca-data-model/
> Htmlized:
https://tools.ietf.org/html/draft-hares-i2rs-bnp-eca-data-model-03
> Diff:
https://www.ietf.org/rfcdiff?url2=draft-hares-i2rs-bnp-eca-data-model-03
>
> Abstract:
> This document contains the Basic Network Policy and Filters (BNP IM)
> Data Model which provides a policy model that support an ordered list
> of match-condition-action (aka event-condition-action (ECA)) for
> multiple layers (interface, L1-L4, application) and other factors
> (size of packet, time of day). The actions allow for setting actions
> (QOS and other), decapsulation, encapsulation, plus forwarding
> actions. The policy model can be used with the I2RS filter-based
> RIB.
>
>
>
>
> Please note that it may take a couple of minutes from the time of
submission until the htmlized version and diff are available at
tools.ietf.org.
>
> The IETF Secretariat
>
>
> _______________________________________________
> i2rs mailing list
> [email protected] <mailto:[email protected]>
> https://www.ietf.org/mailman/listinfo/i2rs
>
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