<p dir="ltr">It's getting quite old now however still interesting, as it is a presentation by the major implementor of IS-IS and IIRC OSPF for Cisco, who then went on to Juniper, and was also one of the people behind BFD.</p>
<p dir="ltr"><b>OSPF and IS-IS: A Comparative Anatomy</b><br>
<a href="https://www.nanog.org/meetings/abstract?id=1084">https://www.nanog.org/meetings/abstract?id=1084</a></p>
<div class="gmail_extra"><br><div class="gmail_quote">On 2 Sep 2016 08:18, "Mark Prior" <<a href="mailto:mrp@mrp.net">mrp@mrp.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I think that the key thing is to go with the protocol that your support<br>
team know. I learned ISIS while doing my JNCIP and I didn't discover<br>
anything compelling while playing configuration games in my lab to make<br>
me want to make the change from OSPF (even when using OSPFv2 and v3) to<br>
ISIS. If your NOC staff have experience with both then it might be tough<br>
to choose one but if not go with the one they know and avoid angst :-)<br>
<br>
Mark.<br>
<br>
On 1/09/2016 22:34, Paul Wilkins wrote:<br>
> All I can say is that redistribution between IGPs is never the right<br>
> answer. OSPF works and is generally well understood.<br>
><br>
> Kind regards<br>
><br>
> Paul Wilkins<br>
><br>
> On 1 September 2016 at 22:25, Michael Bullut <<a href="mailto:main@kipsang.com">main@kipsang.com</a><br>
> <mailto:<a href="mailto:main@kipsang.com">main@kipsang.com</a>>> wrote:<br>
><br>
> Greetings Team,<br>
><br>
> While I haven't worked with IS-IS before but the only disadvantage<br>
> I've encountered with OSPF is that it is resource intensive on the<br>
> router it is running on which is why only one instance runs on any<br>
> PE & P device on an ISP network. OSPF is pretty good in handling the<br>
> core network routing while BGP & EGP handle the last-mile routing<br>
> between PE & CE devices. BGP & EGP can run on top of OSPF. I came<br>
> across this *article*<br>
> <<a href="https://routingfreak.wordpress.com/2011/03/05/why-providers-still-prefer-is-is-over-ospf-when-designing-large-flat-topologies/" rel="noreferrer" target="_blank">https://routingfreak.<wbr>wordpress.com/2011/03/05/why-<wbr>providers-still-prefer-is-is-<wbr>over-ospf-when-designing-<wbr>large-flat-topologies/</a>><br>
> when scrolling the web a while back and I still want to find out if<br>
> am the only one who thinks its a matter of choice between the two.<br>
> Although there isn't distinct 1:1 argument, it's good we discuss it<br>
> here and figure out why one prefer one over the other /(consider a<br>
> huge flat network)//./ What say you ladies and gentlemen?<br>
><br>
> Warm regards,<br>
><br>
> Michael Bullut.<br>
><br>
> ---<br>
><br>
> *Cell:* /<a href="tel:%2B254%20723%20393%20114" value="+254723393114">+254 723 393 114</a>.<br>
> /*Skype Name:* /Michael Bullut./<br>
> /**///*Twitter:*//**@Kipsang <<a href="http://twitter.com/Kipsang/" rel="noreferrer" target="_blank">http://twitter.com/Kipsang/</a>><br>
> //<br>
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