Arista Layer3

Ken Chase math at
Thu Nov 30 21:00:22 UTC 2017

  >Arista DCS-7280SRA-48C6 is a 1ru box.??
  >Has a nominally million route fib, Jericho+ 8GB of packet buffer.
  >control-plane is 8GB of ram andAMD GX-424CC SOC which is 4 core 2.4ghz.
  >We do direct fib injection with bird rather than the arista bgpd but the
  >control-plane is capable of managing quite a few bgp sessions.
  >the 1/2ru 7280CR2K-30 and 60 are 2m route fib boxes with still heftier
  >control planes but they're a different class of box being all 100G and
  >requiring multi-chip/internal fabrics.

Sounds pretty good - hows your power draw on that thing? Why'd you pick Bird
in this case?


  >> /kc
  >> On Thu, Nov 30, 2017 at 10:45:09AM -0800, Tyler Conrad said:
  >>   >For Enterprise/DC, it works great. For service provider, they're not 100%
  >>   >yet. The main issue is going to be around VRFs, as there's no interaction
  >>   >between them (at least in the code version I'm on, that may have changed
  >>   >recently or be changing soon). They'll work great as a P-Router, but if you
  >>   >need a PE with route leaking I'd look at another vendor.
  >>   >
  >>   >I use a couple pairs of 7280SRs as edge routers/border leaves. Multiple
  >>   >full table feeds without any issue.
  >>   >
  >>   >On Thu, Nov 30, 2017 at 10:36 AM, Romeo Czumbil <Romeo.Czumbil at
  >>   >> wrote:
  >>   >
  >>   >> So I've been using Arista as layer2 for quite some time, and I'm pretty
  >>   >> happy with them.
  >>   >> Kicking the idea around to turn on some Layer3 features but I've been
  >>   >> hearing some negative feedback.
  >>   >> The people that I did hear negative feedback don't use Arista themselves.
  >>   >> (they just heard....)
  >>   >>
  >>   >> So do we have any Arista L3 people out here that can share some negatives
  >>   >> or positives?
  >>   >>
  >>   >> Use case: Just some MPLS IPv4/IPv6 routing, l2vpn OSPF/BGP
  >>   >> Maybe 20k routes (no full internet routes)
  >>   >> 7050 Series
  >>   >> 7280 Series
  >>   >>
  >>   >> -Romeo
  >>   >>

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