08-07-2008 10:38 AM - edited 03-03-2019 11:04 PM
Can anyone tell me which 800 series routers allow 20 Mbps throughput across the WAN port?
I have a cable modem that outputs this speed but am having difficulty finding a router that will accept this throughput across the WAN port.
Thanks.
08-07-2008 01:13 PM
The 871 and 881 have at least 32 Mbps firewall throughput. The WAN port is 10/100 so 20 Mbps throughput is no problem.
Hope that helps.
08-07-2008 01:16 PM
That's exactly the information I'm looking for.
Other 800 series also have 10/100 WAN ports but reportedly do not transfer more than 10 Mbps.
Thank you.
08-07-2008 01:35 PM
Hi !
The 800 Series only support 12,5 Mbps for Fast Switching.
For full list of Cisco routers performance check:
http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf
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Regards,
Raul
(please rate helpful posts)
08-07-2008 01:40 PM
Now I'm confused again.
Customer support told me that the 871 supports 30 Mbps VPN so shouldn't it at least support 30 Mbps non-VPN across the WAN port?
08-07-2008 02:05 PM
emm.. remember cisco say, the performance of laboratory tests..
The Perfomance of the Router
varies sharply according to different factors including the size of package and the kind of traffic..
From bottom of page http://www.cisco.com/en/US/partner/prod/collateral/routers/ps380/ps6200/prod_qas0900aecd8028a982.html
Performance
Q. What are the performance characteristics of the Cisco 870 Series and Cisco 850 Series Integrated Services Routers?
A. Aggregate performance with IPsec 3DES for the Cisco 870 Series is up to 8 Mbps with IMIX packets, and up to 30 Mbps with 1400-byte packets.
Aggregate performance with IPsec 3DES for the Cisco 850 Series is up to 4 Mbps with IMIX packets, and up to 8 Mbps with 1400-byte packets.
IMIX == Internet Mix Traffic.
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Regards,
Raul
(please rate helpful posts)
08-07-2008 03:26 PM
As Raul notes, performance varies much, especially based on packet size. Large packets (best case) often quoted for impressive throughput. 64 byte packets usually the benchmark for (worst case). IMIX often the bencmark for (average case).
08-07-2008 03:39 PM
What packet size would you expect from a cable modem?
08-07-2008 05:16 PM
Often up to 1500 bytes, but the average size should be around 300 to 40 bytes, but with many packets both minimum and maximum sized.
03-26-2012 11:18 AM
Hi
I've found this area quite confusing and have seen conflicting information regarding router throughput. From this document (http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf), the throughput on the 870 router is 12.8 Mbps. I'm currently using my own 871w router as the WAN side connection on an unmanaged fibre connection (no firewall - just routing) and I'm seeing 50Mbps through it.
Can anyone explain this?
Thanks
Cammy
03-26-2012 03:06 PM
the throughput on the 870 router is 12.8 Mbps.
The value stated on this PDF document is expressed in HALF duplex and without any encryption. So if you want FULL duplex or with encryption then you halve the value. If you want FULL duplex AND with FULL encryption then you take the full value and factor it by four.
03-28-2012 02:24 AM
Running my 871 with no encryption, full duplex 100 Mbps at both sides, I'm seeing at least 50Mbps (limited by the speed of the circuit), this is not a fraction of 12.8 Mbps
03-26-2012 06:02 PM
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Depends on your packet sizes and features being used. For instance, Cisco says the 860 (same nominal performance as an 870) can push 197 Mbps for 1500 byte packets doing nothing but packet forwarding yet they recommend the 860 for WAN circuits up to only 4 Mbps.
I've attached a later Cisco document that better explains performance.
03-28-2012 02:27 AM
Thanks. Presumably performance degradation when using encryption occurs on the router that is doing the encrypting, not on a router which is simply routing traffic?
03-28-2012 02:32 AM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
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Or decryption or other services; otherwise correct.
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