Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-large-dc
Anoop Ghanwani <anoop@alumni.duke.edu> Thu, 06 August 2015 02:05 UTC
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Date: Wed, 05 Aug 2015 19:04:56 -0700
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Subject: Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-large-dc
From: Anoop Ghanwani <anoop@alumni.duke.edu>
To: Jeff Tantsura <jeff.tantsura@ericsson.com>
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Cc: "draft-ietf-rtgwg-bgp-routing-large-dc@tools.ietf.org" <draft-ietf-rtgwg-bgp-routing-large-dc@tools.ietf.org>, rtgwg-chairs <rtgwg-chairs@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
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Support. I have mostly minor comments included below. Anoop ====== Section 2.3 I had trouble understanding this statement: >>> Operating large-scale infrastructure could be expensive, provided that a larger amount of elements will statistically fail more often. >>> Is it just trying to say that with a larger number of elements, likelihood of seeing failures goes up? Or is it saying something else? Section 3.2.4 >> If a data center network size is small, it is possible to reduce the number of switches in Tier-1 or Tier-2 of Clos topology by a power of two. >> Should this say factor of 2? Section 4.1 >> The major downside of this approach is the proprietary nature of such extensions. >> The bigger issue is probably limited scalability because of the need for synchronization between switches at a given tier level where the protocol is implemented. Also wastage of ports to implement the inter-chassis link. I say that because a standard for this now exists -- 802.1AX DRNI, so technically, the proprietary nature is no longer a limiting factor. Section 4.1, para 2 >> currently the maturity of the protocol >> Did you mean lack of maturity? Section 4.3 >>> Application providers and network operators continue to also develop new solutions to meet some of the requirements that previously have driven large Layer 2 domains. >>> Would be good to add a reference. Section 5.2.1 >>> A unique ASN is allocated per each group of Tier-2 devices. >>> By group, do you mean all of the switches in a cluster (cluster being a term previously defined)? Or is group something else? Typos and minor editorial =================== Section 2.4, line 6 situation -> situations (or a situation) Section 4.1, line 11 larger topologies many of the fundamentals -> larger topologies, many of the fundamentals Section 4.2, last bullet Layer-2 -> Layer 2 Layer-3 -> Layer 3 (Only instance where hyphens are used :)) Section 5.1, bullet 6 >> It is worth mentioning that all widely deployed link-state IGPs also feature periodic refreshes of routing information, while BGP does not expire routing state, even if this rarely causes significant impact to modern router control planes. >> would read better as >> It is worth mentioning that all widely deployed link-state IGPs also feature periodic refreshes of routing information even if this rarely causes significant impact to modern router control planes, while BGP does not expire routing state. >> Section 5.1, last bullet NRLI -> NLRI Section 5.2.3 The section Section 8.2 -> Section 8.2 Section 5.2.5 iBGP -> IBGP Section 5.2.5, 2nd bullet >> device with the other devices in the Clos >> change to >> device compared with the other devices in the Clos >> Section 6.1, 3rd para, 2nd line step (e) Section -> step (e) in Section Section 6.4, line 1 used to ECMP -> used for ECMP Section 6.4, line 2 minimizing -> minimize Section 7.1, 3rd para, 1st line Ethernet technologies -> Ethernet links (or platforms) Section 7.1, 2nd line from bottom it's -> its Section 7.4, 1st para after bullets, line 2 from bottom only store -> only stores Section 7.5, line 4 from bottom server IP address subnet -> server IP address subnets Section 8.1, 1st para, last line iBGP -> IBGP Section 8.2, 2nd para, line 2 from bottom Tiers -> tiers Section 8.2.2, line 9 there is no failures -> there are no failures On Sun, Aug 2, 2015 at 8:31 PM, Jeff Tantsura <jeff.tantsura@ericsson.com> wrote: > Hi RTGWG, > > This email is to start 2 weeks RTGWG LC for > draft-ietf-rtgwg-bgp-routing-large-dc-05 > Authors have addressed all the comments. > > Please indicate support or no-support as well as your comments by August > 18, 2015. > > If you are listed as a document author or contributor please respond to > this email stating of whether or not you are aware of any relevant IPR. > The response needs to be sent to the RTGWG mailing list. The document will > not advance to the next stage until a response has been received from each > author and each individual that has contributed to the document. > > Thanks, > > Jeff & Chris > > _______________________________________________ > rtgwg mailing list > rtgwg@ietf.org > https://www.ietf.org/mailman/listinfo/rtgwg >
- RTGWG LC for draft-ietf-rtgwg-bgp-routing-large-dc Jeff Tantsura
- RE: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Petr Lapukhov
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Robert Raszuk
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Acee Lindem (acee)
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Ebben Aries
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Pushpasis Sarkar
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Henderickx, Wim (Wim)
- RE: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Antoni Przygienda
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Jon Mitchell
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Ariff Premji
- RE: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Russ White
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Rick Casarez
- RE: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Uma Chunduri
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Mohan Nanduri
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Anoop Ghanwani
- 答复: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Lizhenbin
- (Updated)答复: RTGWG LC for draft-ietf-rtgwg-bgp-ro… Lizhenbin
- RE: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Xuxiaohu
- RE: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Richard Li
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Jon Mitchell
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Anoop Ghanwani
- Re: RTGWG LC for draft-ietf-rtgwg-bgp-routing-lar… Jeffrey Haas