[c-nsp] Recommendation for Cisco router with Full BGP Route

[Brandon Butterworth]

On 05/03/2025 14:07:16, "Pengembara T. via cisco-nsp" 
<cisco-nsp at puck.nether.net> wrote:
>Interested at 7280cr2k. But based on thi, its no longer listed

R (1st gen) and R2 (2nd gen) are end of sale and heading to end
of support, I've not checked every model of R2 but will be
similar timetable.

https://www.arista.com/en/support/advisories-notices/end-of-sale/15849-end-of-sale-of-the-arista-dcs-7280cr2k-30-series

others are here -
https://www.arista.com/en/support/advisories-notices/endofsale

>Looks like its already replaced with something else.

R3 are the current generation if you are buying new, and need
support. R and R2 are appearing cheaply used now they hare
dropping off support.


>Im still did not understand arista model naming convention.
>
>What about 7280SR3-40YC6 ? Is the control plane able to handle

7280 is the big buffer full table range = router

S,Q,C is the general port speed range, I don't know the official
nomenclature but it's along the lines of S = slow, they probably
mean SFP, Q = QSFP = 40G, C = century = 100G, and so on.

R(null,2,3) is generation.

K = bigger TCAM

-40YC6 = describes port combination

-F and M on the end is air flow and ram options

As others have mentioned, lots of details  in
https://www.arista.com/assets/data/pdf/Whitepapers/7280R3-Platform-Architecture-WP.pdf

>7280sr3 did not mention bgp table, but mention these:
>Cloud Networking Ready
>  Up to 384K MAC Addresses
>  Over 2M IPv4 Unicast Routes
>  Over 5M IPv4 Routes with 7280R3K

Those routes are hardware defined, the Flexroute software
option is FIB compression and is quite effective (R = 1M TCAM,
total fail for a full table, with Flexroute it functions well
at about 40% utilisation). It works with K and non K versions
but obviously K is a better starting point for very large.

BGP table is just ram and there are more ram versions. The
same R was tight with the standard 8GB but with 32GB is fine
(you can DIY upgrade, 16G is easy, above that for R range
the SOC needs unbuffered and 16GB unbuffered is hard to find).

brandon