01-31-2008 01:26 PM - edited 03-03-2019 08:30 PM
How many pps or Mbps cleartext would you expect from a 1721 between the built-in 10/100 port and a 10/100 port on the four-port switch module, using IOS firewall? I've seen numbers for encryption (the unit has VPN bundle), but have no idea how the unencrypted IOS firewall throughput would compare to, say, a 506E.
Any thoughts or links will be much appreciated.
Paul
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01-31-2008 02:17 PM
01-31-2008 02:16 PM
Here's attached the frequently posted performance sheet.
For FW enabled, subtract a very cautious 30%.
Hope this helps, please rate post if it does!
01-31-2008 02:17 PM
02-01-2008 12:50 PM
Very helpful, thanks. Just 3 more questions ;-) ...
- do you happen to know whether IOS firewall is process switched on a smaller router?
- should the CEF numbers be seen as a best-case sum for all flows through a router with multiple interfaces, ie fe1<->fe2 PLUS fe3<->fe4?
- why do some models have no listing for process-switched throughput? (hope it's not embarrassment protection!)
Thanks again.
02-01-2008 01:20 PM
Hi, first of all one has to define which FW flavour is used. There is the old one, then evolution of it, now we have zone-based FW..
Anyway the tendency is to have cef switching as long possible. This is also why you see less and less process-switching performance numbers.
Multiple interface routing vs single pair usually subtracts little from the overall.
Thanks for the nice rating and good luck!
02-01-2008 01:59 PM
So for a sanity check...
If a 1721 maxes at 12k pps, assuming an avg packet size of 1000 bytes, then w/8bits/byte it's 96Mbps. So on a full duplex 100Mbps link with the conservative 30% fw derating, and equal traffic in both directions (won't happen!) I might get up to 33Mbps throughput in each direction?
BTW, FWIW, I found a slightly newer version product sheet at http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf
...once I knew what to search for.
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