[c-nsp] ASR920 vs ISR4000

[Tony]

Hi Michael,

Both of those options are quite probably overkill for what you've described. If a 2811 is currently doing what you need in the deployment and the only change is an increase in speed, just go with the next step up. For what you've described a 2911 would easily fit what you want and I imagine it would be a lot cheaper than either ISR4000 or ARS920. Depends whether you want something new and shiny or something that will just get the job done. If you want to purchase a router now for some future upgrade, then you'd have to take a stab at what you think the upgrade might be and when you think it might happen and then purchase something that you think might be sufficient for that.

Our current rollout guidelines (internally) suggest 2911 is good for around 120-150mbps. For up to 250-300mbps we use 3925. Anything higher speed than that is evaluated individually.

Best of luck with your upgrade :)


regards,
Tony.



----- Original Message -----
From: Michael Malitsky <malitsky at netabn.com>
To: "cisco-nsp at puck.nether.net" <cisco-nsp at puck.nether.net>
Cc: 
Sent: Tuesday, 22 September 2015, 10:52
Subject: [c-nsp] ASR920 vs ISR4000

I need to upgrade the edge router for one of my deployments.  Current 2811 is not expected to support the new WAN links.  I need 4-5 ports (copper is fine), aggregate throughput up to 125Mb (not accounting for future growth), BGP with 3-5 peers and <100 routes, and QoS.  I don't ever expect to support telephony or MPLS.  Cisco's suggestion is to use an ISR4331.

The question is whether I should also consider an ASR920 for this role?  I've seen it mentioned on this list a few times.  It looks like both will fill my basic requirements, price points are similar, and both run IOS-XE.  The ISR's performance is capped at 300Mb, and I can add a small number of ports.  The ASR's performance is essentially unlimited, and I can add more ports (by purchasing licenses).  The ISR will do encryption if I ever need it, in software only, and the ASR will not.

Are there any major differences I am missing?  Any first-hand experiences would be especially appreciated.

Sincerely,
Michael

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