Re: [irs-discuss] Fwd: New Version Notification for draft-amante-irs-topology-use-cases-00.txt

Thomas Nadeau <tnadeau@juniper.net> Mon, 08 October 2012 22:33 UTC

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From: Thomas Nadeau <tnadeau@juniper.net>
To: Iftekhar Hussain <IHussain@infinera.com>, "<irs-discuss@ietf.org>" <irs-discuss@ietf.org>
Thread-Topic: [irs-discuss] Fwd: New Version Notification for draft-amante-irs-topology-use-cases-00.txt
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Date: Mon, 8 Oct 2012 22:31:22 +0000
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Subject: Re: [irs-discuss] Fwd: New Version Notification for draft-amante-irs-topology-use-cases-00.txt
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Will do.

Also, hopefully the forthcoming requirements draft that Jan is publishing tomorrow morning, should help too.

--Tom



From: Iftekhar Hussain <IHussain@infinera.com<mailto:IHussain@infinera.com>>
Date: Monday, October 8, 2012 6:21 PM
To: Thomas Nadeau <tnadeau@juniper.net<mailto:tnadeau@juniper.net>>, "<irs-discuss@ietf.org<mailto:irs-discuss@ietf.org>>" <irs-discuss@ietf.org<mailto:irs-discuss@ietf.org>>
Subject: RE: [irs-discuss] Fwd: New Version Notification for draft-amante-irs-topology-use-cases-00.txt

Hi Tom,

Okay, I see.  I think, it would be helpful to:

·         Clarify the context of this example as currently it is a little unclear. For example, ROADM layer ‘active’ topology would normally be ‘visible’ to the IGP’s LSDB (i.e., IGPs with GMPLS extensions).

·         Add few multi-layer topology examples and their use by network applications (e.g., what type of info one would like to reveal etc.).
Thanks,
Iftekhar
From: Thomas Nadeau [mailto:tnadeau@juniper.net]
Sent: Monday, October 08, 2012 2:11 PM
To: Iftekhar Hussain; <irs-discuss@ietf.org<mailto:irs-discuss@ietf.org>>
Subject: Re: [irs-discuss] Fwd: New Version Notification for draft-amante-irs-topology-use-cases-00.txt


Hi!

The IRS topology effort is not about what is visible to what devices per se; its about revealing different topological components in a normalized topology database. So in this example, capturing the active information (which is visible via LSDB/IGP routing protocols), is complimented with other inactive (or passive) topological components.

--Tom


From: Iftekhar Hussain <IHussain@infinera.com<mailto:IHussain@infinera.com>>
Date: Sunday, October 7, 2012 6:00 PM
To: "<irs-discuss@ietf.org<mailto:irs-discuss@ietf.org>>" <irs-discuss@ietf.org<mailto:irs-discuss@ietf.org>>
Subject: Re: [irs-discuss] Fwd: New Version Notification for draft-amante-irs-topology-use-cases-00.txt

Hi Authors,
“…and visible within the Link State Database (LSDB) of an active IGP, but also network elements who are active, but invisible to a LSDB (e.g.: L2 Ethernet switches, ROADM's, etc.)”
Shouldn’t ROADMs topology be visible to IGP? Perhaps you intend to say optical line amplifier (OLA).
Regards,
Iftekhar