What is special in ISR router ? what are the difference between ASR and ISR router ? is there any se...

sudhakara.py · ‎05-29-2016

What is special in ISR router ? what are the difference between ASR and ISR router ? is there any security or firewall feature integrated in ISR router ?

Philip D'Ath · ‎05-29-2016

Basically the ASR is a bigger router with a lot more throughput. With the exception of the ASR9000, they run IOS-XE.

ISR comes with firewall you you buy it with an "advanced security" licence or better.

sudhakara.py · ‎05-30-2016

Hi Philip

Thanks for your answer, I need little more in detail on ASR router in comparison with ISR router.

Where do we use ASR ? What do you mean by higher throughput?

Could you please write it here ?

Philip D'Ath · ‎05-30-2016

Here is a comparison of the ASR 1k series. Note the throughputs.

http://www.cisco.com/c/en/us/products/routers/asr-1000-series-aggregation-services-routers/models-comparison.html

Here is a comparison of the 4000 series routers. Note the throughputs.

http://www.cisco.com/c/en/us/products/routers/4000-series-integrated-services-routers-isr/models-comparison.html

Both of these series run IOS-XE - so both run similar software.

Philip D'Ath · ‎05-30-2016

Here is a comparison of the older ISRG2 routers and the newer 4000 series.

http://www.cisco.com/c/en/us/products/routers/2900-series-integrated-services-routers-isr/series-comparison.html

Tagir Temirgaliyev · ‎05-30-2016

Session Initiation Protocol (SIP) sessions - this means concurrent CUBE calls? or call legs? each call 2 call legs?

Joseph W. Doherty · ‎05-31-2016

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What's special about an ISR, they support software features and/or hardware, above and beyond just basic routing. For example, they might support voice or they might support WAFS/WAAS, etc.

As also noted by Philip, the ASRs ofter much more performance than ISRs (of course, they're much more costly too).

Again, as also noted by Philip, ISR, depending on feature set, do offer some security and/or FW capabilities. Support for those features, though, isn't generally as good as dedicated appliances.