Re: WGLC for draft-ietf-bfd-large-packets

"Carlos Pignataro (cpignata)" <cpignata@cisco.com> Fri, 13 September 2019 04:21 UTC

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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Mahesh Jethanandani <mjethanandani@gmail.com>
CC: "Reshad Rahman (rrahman)" <rrahman@cisco.com>, "rtg-bfd@ietf. org" <rtg-bfd@ietf.org>
Subject: Re: WGLC for draft-ietf-bfd-large-packets
Thread-Topic: WGLC for draft-ietf-bfd-large-packets
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Date: Fri, 13 Sep 2019 04:21:11 +0000
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Hi, Mahesh,

On Sep 13, 2019, at 12:13 AM, Mahesh Jethanandani <mjethanandani@gmail.com<mailto:mjethanandani@gmail.com>> wrote:

Hi Carlos,

On Sep 12, 2019, at 7:56 PM, Carlos Pignataro (cpignata) <cpignata@cisco.com<mailto:cpignata@cisco.com>> wrote:

Thanks for the reminder, Reshad. I support publication of this document, short and useful.

I only have one comment in regards to:

   It is also worthy of note that even if an implementation can function
   with larger transport PDUs, that additional packet size may have
   impact on BFD scaling.  Such systems may support a lower transmission
   interval (bfd.DesiredMinTxInterval) when operating in large packet
   mode.  This interval may depend on the size of the transport PDU.

Instead of (or in addition to) a lower transmission interval, why not add flexibility to not *have* to send large packets every packet, and instead send every n paks or so?

Wouldn’t that have a problem that one packet lost every n packets would still keep the BFD session up?

Unless you also measure large-packets lost :-)

Thanks,

Carlos.


Cheers.


Thanks!

Carlos.

On Sep 9, 2019, at 10:55 AM, Reshad Rahman (rrahman) <rrahman@cisco.com<mailto:rrahman@cisco.com>> wrote:

BFD WG, reminder that WGLC is ongoing for this document.

Regards,
Reshad.

From: Rtg-bfd <rtg-bfd-bounces@ietf.org<mailto:rtg-bfd-bounces@ietf.org>> on behalf of "Reshad Rahman (rrahman)" <rrahman@cisco.com<mailto:rrahman@cisco.com>>
Date: Tuesday, August 27, 2019 at 12:34 PM
To: "rtg-bfd@ietf.org<mailto:rtg-bfd@ietf.org>" <rtg-bfd@ietf.org<mailto:rtg-bfd@ietf.org>>
Subject: WGLC for draft-ietf-bfd-large-packets

BFD WG,

As was mentioned at IETF105, this document is stable and there was an interop test done between FRR and Junos VMX.

Please provide comments/feedback on the document. The deadline for last call is September 13th.

Regards,
Reshad & Jeff.