Curiosity... 2800 Series Routers

mgeorge

Well I have always been curious as to what processor(s) the 2800 Series ISR routers
incorporated, and if you are as curious as I was then this may sastify ya curiosity...

2801 RM5261A 250MHz
2811 RM5261A 350MHz
2821 RM7065C 466MHz
2851 RM7065C 466MHz

It's funny though if you Google the processors, you will find that they are used in industrial laser
jet printers... Nice to know that a Laserjet printer is just as fast as a 2851 Router... I wonder how
many ppm a 2851 can do o.O

tiersten

There is a big list on the Linux MIPS site with some of the other routers as well. Not all of them are MIPS based but they seem to be listed anyway.

dtlokee

It's the switching ASICs that will provide the speed in forwarding the packets between interfaces, not the CPU.

tiersten

dtlokee wrote:

It's the switching ASICs that will provide the speed in forwarding the packets between interfaces, not the CPU.

Didn't think there was one in the 28xx series.

mgeorge

If I remember correctly there is no switching based ASIC's built into 2800 ISR's. The bus is FIO ASIC based which is simular to a switch based fabric architecture and replaced the old PCI BUS architecture from 2600/3600/3700 Series Router and overall increases performance by lowering the required interprocessor communication between modules but switching ASIC's remain on the WIC's, AIM's & Network Modules, or so thats what I thought.

I know cisco is really picky about disclosing information about their ASIC's but if you have more info than feel free to post it

dtlokee

mgeorge wrote:

If I remember correctly there is no switching based ASIC's built into 2800 ISR's. The bus is FIO ASIC based which is simular to a switch based fabric architecture and replaced the old PCI BUS architecture from 2600/3600/3700 Series Router and overall increases performance by lowering the required interprocessor communication between modules but switching ASIC's remain on the WIC's, AIM's & Network Modules, or so thats what I thought.

I know cisco is really picky about disclosing information about their ASIC's but if you have more info than feel free to post it

As you point out it's not a "switching" ASIC but a "FIO" ASIC, what exactly are the differences in the way the two behave?

My point wasn't that there is a particular type of ASIC but that the CPU is hardly involved in the forwarding path and has less bearing on the performance of the router than the switching path.