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I agree with all that you said except the scaling limits of ECMP. We have boxes that support 64 ECMP destination and I've seen others mention 256: https://youtu
by _jbez 9y ago
I agree with all that you said except the scaling limits of ECMP. We have boxes that support 64 ECMP destination and I've seen others mention 256: https://youtu.be/ciClZdwHelU https://youtu.be/ciClZdwHelU
- packetslave 9y agoNice to hear things have gotten better. 8 and 16 next-hop limits were very common a few years ago, especially on devices that you'd use as a top-of-rack switch. ECMP still has some scaling challenges, IMHO, since each destination host still needs to peer with the upstream switch over BGP (unless you do some cleverness).