@fabios wrote:
I believe they do not brag about it because it would divert sales from higher platforms. It is quite capable .... the routing capability is capped by the GE interface speed, I will experiment with etherchannel since the connection between the routing engine and the switch is 2.5 Gb .... Page 21 is where I have got the info... Also the maximum routing performance is given for 1.8 Gbps.
I have achieved in excess of 900 Mbps with NAT ..!
Cheers
Fabio
Well, if you look at page 35 of that presentation, that have CEF IMIX at 1.8 Gbps and NAT IMIX at 1.13 Gbps, for the 1161. But with IMIX, on routers, expect thoughput to decrease if the packet mix averages smaller packets, and conversely increase with larger packets. The deltas can be more than expected. I attached another Cisco document, that shows performance for various routers using both different traffic mixes and services. Take note of the maximum performance listed at the beginning of the document and the recommendations at the end of the document. Keep in mind, the deltas, are pretty common across software based routers, just the mins and max vary much based on the specific model.
As to routing capacity limited by GE interfaces, well, even for CEF IMIX, with two duplex gig interfaces, device would need to provide 2 Gbps of throughput, so 1.8 Gbps falls a bit short.
As to the 2.5 Gbps switch interconnect, it's unclear whether that simplex or duplex bandwidth, just as sometimes Cisco will quote a gig link as providing 2 Gbps, which it is does if it's duplex, i.e. gig in both directions.
