Side note on these CPUs. We are one step/generation away from running BGP IPv4 r... | Hacker News

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acd on Oct 24, 2019 | parent | context | favorite | on: AMD Rome – is it for real? Architecture and initia...

Side note on these CPUs.

We are one step/generation away from running BGP IPv4 routing in PC CPU L3 cache."256MB L3 cache." I believe one needs 512MB L3 cache to fit the current routing tables in cache enabling very fast route lookups on generic PC hardware.

zajio1am on Oct 24, 2019 [–]

Current global BGP IPV4 routes fits in 150 MB of RAM with all BGP attributes (in BIRD).

For forwarding, you do not need most attributes, but you may need better data structures for best-match lookups.

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