[c-nsp] Router/switch recommendations for colocation

[Bill Blackford]

> I have no idea what you did wrong with your 7301; I managed a bit more than
350 kpps - with small packets of course.

Wow. I certainly don't claim to know everything. I should re-state this. I saw 60-100kpps on each interface and yes small packets so I guess we're talking about the same kind of numbers. My apologies for not making this clear.

> If you need no features, or only a few, try one of the switches
(3560/3750)
I believe the OP talked about a full table, but I might be wrong. I've used LAN switches in this role as well but only taking in default. And if he needs no features, then the ones reportedly not properly implemented in the ASRs don't really matter. 

I tend to purchase based on what I think I'll need in 5 years then I add 25%. That said, I would never recommend a router to someone that will only meet their current needs.

-b



-----Original Message-----
From: Elmar K. Bins [mailto:elmi at 4ever.de] 
Sent: Friday, January 28, 2011 7:35 AM
To: Bill Blackford
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Router/switch recommendations for colocation

Re Bill

BBlackford at nwresd.k12.or.us (Bill Blackford) wrote:

> > According to it, the
> > 3845 is rated at 500kpps, which ought to be enough to handle two 100mbit
> > uplinks ... you might want to look into maybe a 7301, which can handle
> > twice the throughput (~1mpps) and is only 1RU 
> 
> I've never been able to get more than 100kpps out of a 7301. That's with no ACLs, limited policies, etc. CPU goes wonky at about 60kpps. I would highly recommend the ASRs. I have some ASR1002's deployed and haven't been able to even wake them up let alone kill them. If you have bursty traffic at all, go with silicon, not software.

I have no idea what you did wrong with your 7301; I managed a bit more than
350 kpps - with small packets of course. Once you add enough bandwidth for
that packet rate at large packet sizes, you need port channels, and those
eat up CPU too...

ASRs are a good choice if you need full features (albeit not all of them
work) and hardware forwarding.

If you need no features, or only a few, try one of the switches
(3560/3750)

Elmar.