[c-nsp] ASR 1002 vs ISR 3945

[Bill Blackford]

I'm not familiar with the 3945. Does it ship with the NPE G1?

I turned off as many features as I could on my 7301 (NPE-G1) and it fell over at 60kpps. As it sits right now, at 15kpps the 7301 is at 27% CPU. My ASR1002 is at 0% with 25kpps. I suspect this would still be 0% when I occasionally micro burst to 300kpps. This ISR must be much more robust than I'd ever give it credit.

-b




-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Brad Henshaw
Sent: Wednesday, April 07, 2010 6:50 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] ASR 1002 vs ISR 3945

Clue Store wrote:

> Between the 2 sites will be a 200mb (1 Gigabit burstable) link.
> How far will the 3945 take me...
> 200mb non-encrypted traffic to start (possibly ramped up to 1gb over
the
> next 12 months) QoS BGP (Non internet tables) IGP

I'm not running any ASR's yet (but will be soon) however:

Raw PPS figures:
3945: 982kpps
ASR1002-F: 4.42Mpps

They're best case, with features off. It's incredibly easy to knock ISR
G1 performance down by 80-95% by turning on QoS, tunnelling and other
features. Not sure about the ISR G2's but I would guess it's the same
(anyone else care to comment?)

ASR should maintain performance with QoS and possibly other features on
(not crypto) as these are implemented in hardware.

Some imaginary figures:
3945 with features enabled, 80% [optimistic] performance hit, 200B paks:
314Mbps aggregate (or 157Mbps full duplex)
ASR1002-F with features enabled, 0% performance hit, 200B paks: 2.5Gbps
aggregate (limited by ESP bandwidth)

Adjust the sums as you see fit, but the ASR seems the better fit. If the
majority of traffic is based on large packets you might be able to get
away with the 3945 for a while, if you absolutely had to.

Regards,
Brad

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