[c-nsp] ASR920 vs ISR4000

[Nick Cutting]

I just had the same conundrum - although I needed gigabit.  Mine was between ASR1k and an ASR920.  I had a requirement for netflow - and although on the roadmap - I couldn't get a date out of cisco for the feature release on the 920.  I needed netflow from day1.   The chaps here gave me lots of info on the 920 - and It seemed perfect apart from this.  

Also with the 4xxx series ISR - remember that the 43xx is like 3xxx ISR but running  XE - i.e very software based.  The 45xx series is far more similar to the ASR1k as many more features are done in hardware.  I however have only used the 4451 to terminate VTi and DMVPN, with QOS and it has performed like a champ.  However for  the 920 VS ASR1k - I bought the ASR in the end.

-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Michael Malitsky
Sent: 22 September 2015 01:53
To: cisco-nsp at puck.nether.net
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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