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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Hi Baldur,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>From memory mx204 FIB is 10M (v4/v6) and RIB 30M for each v4 and v6.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>And remember the FIB is hierarchical -so it’s the next-hops per prefix you are referring to with BGP FRR. And also going from memory of past scaling testing, if pfx1+NH1 == x, then Pfx1+NH1+NH2 !== 2x, where x is used FIB space. <o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'> <o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>adam<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> NANOG <nanog-bounces+adamv0025=netconsultings.com@nanog.org> <b>On Behalf Of </b>Baldur Norddahl<br><b>Sent:</b> Saturday, June 20, 2020 9:00 PM<br><br></span><o:p></o:p></p><div><div><p class=MsoNormal>I can't speak for the year 2000 as I was not doing networking at this level at that time. But when I check the specs for the base mx204 it says something like 32 VRFs, 2 million routes in FIB and 6 million routes in RIB. Clearly those numbers are the total of routes across all VRFs otherwise you arrive at silly numbers (64 million FIB if you multiply, 128k FIB if you divide by 32). My conclusion is that scale wise you are ok as long you do not try to have more than one VRF with a complete copy of the DFZ.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>More worrying is that 2 million routes will soon not be enough to install all routes with a backup route, invalidating BGP FRR.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></div></body></html>