NPE-G2 vs. Sup720-3BXL
Elmar K. Bins
elmi at 4ever.de
Fri May 15 10:21:28 CDT 2009
dstorandt at teljet.com (David Storandt) wrote:
> Our engineering team has settled on three $20k/node options:
> - Sup720-3BXLs with PS and fan upgrades
Still quite slow CPU wise. RSP's are supposed to be a lot faster
and actually usable.
> - Sup2s as switches + ISIS + statics and no BGP, push BGP edge routing
> off to NPE-G2s across a 2-3Gbps port-channel
The NPE-G2 - even an NPE-G1 - will do all that BGP stuff easily;
the CPU is fast enough. But...you might be in for a bad surprise
concerning the Portchannel.
Remember - it's done in software. So, depending on your packet
sizes, you might experience a throughput _drop_ once you bundle.
My experiments were done with very small packets though (DNS
queries and responses, avg. packet size around 140 Byte).
The devices I tested were the 1RU models (7301 for NPE-G1 and
7201 for NPE-G2). In "unbundled mode" they pushed around 940 kpps
(G1) and 1320 kpps (G2) with CPU loads between 85% and 100%.
Channel bundling took a lot out of the boxes. 7301 keeled over
at 470, 7201 at 660 kpps.
If you're only pushing big packets, though...
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