router's brain

[Jackal&Cash]

Ok people which chip would u want it inside your router? Chip A or B and why?

 

[Fatt]

I don't want the AMD.

Store & Forward switching?

What is this, 1989?

 

[Abzstrak]

I don't want the AMD.

Store & Forward switching?

What is this, 1989?

Did you even read these? GOD... and when connecting 10Mbps to 100Mbps, what method do you prefer to store and forward?



I'd pick the ADM chip for thoroughput (5 10/100's as opposed to the other chips 2)... the other has enough juice to perform SPI, but I'd choose a real firewall rather than relying on the one built in a soho router....

 

[Fatt]

Did you even read these? GOD...

uhhh... yes?



and when connecting 10Mbps to 100Mbps, what method do you prefer to store and forward?

How about fragment free? or Cut through?

I mean, unless you LIKE latency and ovehead. Hey, who am I to judge?

 

[spidey07]

How about fragment free? or Cut through?

LOL!!

What is this 1996?

those methods died long ago.

 

[Fatt]

Did they?


If you say so.

 

[Tallgeese]

*Tallgeese pulls up a chair to watch the roasting comin on!*

 

[spidey07]

I just can't remeber a modern switch with any intelligence that doesn't use store and forward. I like all the goodies store and forward gives you (tag, qos, L3/L4 stuff)

 

[Fatt]

Yeah, it's this obscure little company called cisco...?

You probably never heard of them.


Look, I'm not going to get into a pissing contest here.

Y'all buy what you want to buy. It's none of my business. Have a nice day.

 

[spidey07]

Hey Fatt, sorry if I rubbed you the wrong way. Its just so rare that we get into a good technical discussion in the network board I was hoping we could remanisce a little.

ps - All cisco catalyst switches use store and forward.
-edit- except for the really old ones like the 1900 and 3200 that were around

 

[Fatt]

store & forward = entire frame received, held, CRC'd & then forwarded

cut through = frame forwarded out the appropriate port as soon as the destination is determined

fragment free = the first 64 bytes of a frame are checked (collision window) and if all is good the frame is forwarded.

Catalyst1900 and (I believe) the 2900 series that is replacing them come with fragment-free enabled by default.
These are also the most common cisco switches out there, whether singly or in a fabric.
And most if not all cisco switches give you packet switching options.
I'm not putting my hand on a bible about this because I'm not as certain about product details as a salesman would be and frankly, I'm still amazed that I managed to pass the CCDA.

But...
store/forward has the highest level of latency of any method.
These days the transport layer does the error correction heavy lifting and you can get good QoS by just insuring the first 64 bytes aren't screwed up.

And, I believe that the original question was about what I liked and didn't like.

I didn't realize that my opinions were going to be a problem.

That's why I'm bowing out of this discussion.

I have other forums that satisfy my need for flame wars.

 

[spidey07]

aw, c'mon Fatt. We need more network heavies on the forum. Although we do tend to give each other lots of bull in fun.

No flames though.

 

[Fatt]

It's cool. My life goes on.

But on this topic I'm done.

 

[Abzstrak]

damn, I coulda sworn I'd subscribed to this post...... I missed the fun