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

[Iftekhar Hussain <[e-mail]>]

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:[e-mail]]
Sent: Monday, October 08, 2012 2:11 PM
To: Iftekhar Hussain; <[e-mail]>
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 <[e-mail]<mailto:[e-mail]>>
Date: Sunday, October 7, 2012 6:00 PM
To: "<[e-mail]<mailto:[e-mail]>>" <[e-mail]<mailto:[e-mail]>>
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