Re: [i2rs] [yang-doctors] draft-ietf-i2rs-yang-l2-network-topology

"Reshad Rahman (rrahman)" <rrahman@cisco.com> Wed, 08 July 2020 15:27 UTC

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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: Susan Hares <shares@ndzh.com>, "yang-doctors@ietf.org" <yang-doctors@ietf.org>, "i2rs@ietf.org" <i2rs@ietf.org>
CC: "martin.vigoureux@nokia.com" <martin.vigoureux@nokia.com>, "'Benjamin Kaduk'" <kaduk@mit.edu>
Thread-Topic: [yang-doctors] draft-ietf-i2rs-yang-l2-network-topology
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Date: Wed, 8 Jul 2020 15:27:18 +0000
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Subject: Re: [i2rs] [yang-doctors] draft-ietf-i2rs-yang-l2-network-topology
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Hi,

So sys-mac-address is supposed to be the MAC address of the mgmt port, i.e. the device would respond to an ARP request for management-address with sys-mac-address? I think use of term system might be a bit misleading if that’s the case, mgmt-mac-address might be better.

Also, it is odd to have an IP address in an L2 grouping.

Disclaimer: not familiar with that draft at all, just took a look at the L2 grouping.

Regards,
Reshad.

From: yang-doctors <yang-doctors-bounces@ietf.org> on behalf of Susan Hares <shares@ndzh.com>
Date: Wednesday, July 8, 2020 at 11:12 AM
To: "yang-doctors@ietf.org" <yang-doctors@ietf.org>rg>, "i2rs@ietf.org" <i2rs@ietf.org>
Cc: "martin.vigoureux@nokia.com" <martin.vigoureux@nokia.com>om>, 'Benjamin Kaduk' <kaduk@mit.edu>
Subject: [yang-doctors] draft-ietf-i2rs-yang-l2-network-topology

The following question was asked by Ben Kaduk during IESG review of the following document:

https://datatracker.ietf.org/doc/draft-ietf-i2rs-yang-l2-network-topology/


     grouping l2-node-attributes {

         [...]

         leaf sys-mac-address {

           type yang:mac-address;

           description

             "System MAC address.";

         }

If there are more than 1 system mac address in a switch, how would this model handle it.

My understanding is that most switches have 1 system mac address for network management.  Therefore, the L2 topology model supports one.

Question for Yang Doctors:

1) Is this the normal assumption for yang models?
2) If not, what is the normal assumption on system mac addresses?

3) Am I correct that switches with more than 1 system MAC will augment their basic yang model with the second system MAC Address.

Thank you, Susan Hares