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allrounder 12/4/2012 | 7:45:54 PM
re: Cisco Storms the Metro Edge This call was made by John Chambers to John Roth a couple of days ago when Chambers visited Toronto. It was very heart-warming.

Chambers: Hi John. This is John Chambers in Toronto. How are you doing recently?

Roth: Hi John, very nice to receive your call. I am doing just fine. As good as it used to be. What about yourself?

Chambers: I am doing OK. Just living a typical CEO life. Travels, meetings, and so on.

Roth: Let me guess. You are offering something.

Chambers: Not too fast. I just want to say "Hi Buddy, I win, you lose".

Roth (laughter): I will have to admit it. But the game is not entirely over though. I got a new guy called Frank Dunn to carry on. He is a financial guy, probably a good match for you.

Chambers: You are kidding. Financial guys can only count numbers. They can never be put in Executive role. I got Larry carter, a very good financial guy. But I will not give him my post when I retire.

Roth: Seriouly. Now that you called. I would try to measure the possibility of your interest in acquiring Nortel. Not for myself, but for 45,000 lives still hanging there.

Chambers: I appreciate you asking, John. But if I give opportunities to your 45,000 people, I will put 38,000 lives in Cisco at risk. To be honest, your people are so lame. They will ruin our people. Business is business. I would loan you money than acquiring your people. Sorry to say that, John.

Roth: You are right. I know how my people are. Some of them are good, but some are really lame. I keep all these lame people because I don't want them to ruin other companies. (Laughter). Specially, some mid-level management, namely VPs, directors and senior managers. Their inability has brought a group of lame first line managers and engineeers.

Chambers: Wouldn't it be better if you got rid of them a lot earlier?

Roth: John, although I respect you in all aspects, but you are really naive in politics. This is a bureaucratic monster I am steering. A lot of incapable people have been with this company for more than 20 years, same age as me. And even more worse, they all at senior positions and got a whole bunch of same type of people under them. Can I fire 50% of the company? The answer is definitely NO. I have to live with them.

Chambers: I understand. If you really want to save some guys, I can offer to buy your wireless operation. This is a market I have attempted to enter but failed so far. It is a market dominated by you and your old buddies like motorola and ericsson. Really hard to break in.

Roth: I can't do that John. Wireless is our life supply right now and will be in the years to come. Although people in wireless division are just as lame as in other divisions. The products are sort of good. But thanks for the offer, anyway.

Chambers: Let's step away from the business a little bit. Despite the failure of Nortel, your personal fortune is not impacted. If my memory is in order, you sold a large bulk of options at 100 or so.

Roth: Yes. That's the only warm memory I am having now. I hope I have enough for my retired life.

Chambers: Speaking of retire life, I will probably join you in 5 years, 10 years max. We can have a get-together then and play some card games on the beach of Mexico.

Roth: I bet I will win the card game.

Chambers: You got it. Don't feel bad even now, there always ups and downs in life.

Roth: One of the another thing have made me feel guilty all along. I did some personal attack on you once or two. Compared Cisco to Wang. I just want you know that I didn't really want to hurt you personally.

Chambers: Don't worry, buddy. We all know that's part of the game. When you in CEO position, you do whatever it takes to win.

Roth: John, I always have a feeling, if we were not working for rival companies, we would have been very good friends.

Chambers: You are wrong, John. We have always been friends. What do you think friends are? Friends are not somebody you need to talk when you in trouble. Friends are not somebody who always give you help. Friends are people who really understand you in-depth, who can feel your pain and joy, who are equivalent in capability. In this sense, rivals are usually best friends in soul.

Roth: Thanks, John. Having talked retirement, we have very good maple syrup and wines in Canada. Be my guest anytime. We can also yell, shout, talk dirty on Raptor's foor, or Skydome, or maple leaf stadium. As long as you are Ok with the weather here.

Chambers: You are kidding me! I was born and raised in Virginia. I am a northerner. Though years of life in San Jose may make me a littler valnurable to canadian flu, I will do fine.

Roth: It has been a very nice conversation for a long time, John.

Chambers: Keep in touch, have a wonderful retire life.

Roth: Thanks, you take care.

Chambers: You too. Bye.
mboeing 12/4/2012 | 7:45:40 PM
re: Cisco Storms the Metro Edge "PXF is used on the Catalysts I believe. These cards are a new linecard architecture for the GSR, called, oddly enough ISE :)"

Actually the PXF is used in a lot of Cisco boxes these days. PXF (aka "Parallel Express Forwarding Network Processor") is IMHO something like a "programmable ASIC". Cisco uses it whenever they need to do deep packet processing.

PXF is used in the Cisco 10000 ESR ("Edge Service Router"). It is used in the latest system controller for the 7200 router, and it is used in the 7600 OSR router (actually a Catalyst 6500 and Cisco 7500 derived box).

The GSR uses a distributed system architecture. So you could view a GSR line card as a router on a blade.

The above leads me to the conclusion that the new GSR ISE line cards use a PXF architecture as well.

/MAB.
G.Mong 12/4/2012 | 7:45:39 PM
re: Cisco Storms the Metro Edge It seems ISE uses PXF+CAM architecure.But is PXF
powerful enough to support so many functions Cisco claimed?In my opinion,PXF is very similar to Intel's IXP1200 network processor.
mboeing 12/4/2012 | 7:45:33 PM
re: Cisco Storms the Metro Edge "It seems ISE uses PXF+CAM architecure.But is PXF
powerful enough to support so many functions Cisco claimed?In my opinion,PXF is very similar to Intel's IXP1200 network processor."

I cannot claim to understand the PXF processor very well. But as far as I understood the PXF-based architecture you would use PXF processors (plus huge amounts of "colum memory") in an array. Lets say 4 colums by 4 rows. The breadth would give you parallelism and the depth would give you packet processing functionality (with each stage performing a specific task).

IMHO scalability of a PXF architecture is not limited by an individual processors capability but by the complexities of a multi processor architecture.

Performance should be mainly impacted by the cleverness of implementing the most utilised packet manipulation funtions in PXF. As soon as your application (lets say MPLS label swapping) forces you to leave the PXF forwarding path, a performance degredation would happen because now the packet must be handled at a slower forwarding path. The nice thing is that you can change that with software. I expect to see performance improvements over time by optimising PXF code.

I've heared that the Cisco 10000 ESR is performing very well. So I would expect the GSR ISE cards to perform equally well (for the set of functions implemented in PXF code).

/MAB.
Lopez 12/4/2012 | 7:45:30 PM
re: Cisco Storms the Metro Edge Actually the PXF is used in a lot of Cisco boxes these days. PXF (aka "Parallel Express Forwarding Network Processor") is IMHO something like a "programmable ASIC". Cisco uses it whenever they need to do deep packet processing.

On centralized platforms like the Cats, this may be true. The GSR is not centralized, and has never shared its architecture with the Cats.

PXF is used in the Cisco 10000 ESR ("Edge Service Router"). It is used in the latest system controller for the 7200 router, and it is used in the 7600 OSR router (actually a Catalyst 6500 and Cisco 7500 derived box).

The GSR uses a distributed system architecture. So you could view a GSR line card as a router on a blade.

The above leads me to the conclusion that the new GSR ISE line cards use a PXF architecture as well.

Close, but the architecture is new, not derived from the PXF at all. Check out the quote below, notice how the linecard is a 1 port OC48, but its architecture is referred to as ISE.

From

http://www.cisco.com/warp/publ...

The 1-Port OC-48 POS ISE features the Cisco 12000 Series IP Services Engine (ISE)GÇöa unique, edge-optimized, programmable adaptive network processor that combines the hardware performance of application-specific integrated circuits (ASICs) with the flexibility of software. It enables a broad range of edge services that also accommodates future customer requirements with simple software upgrades instead of costly hardware replacements.

mboeing 12/4/2012 | 7:45:29 PM
re: Cisco Storms the Metro Edge Hi Lopez,

"On centralized platforms like the Cats, this may be true. The GSR is not centralized, and has never shared its architecture with the Cats."

Agreed, what's your point here? Do you think the PXF cannot be used in a box with distributed architecture? Why? As a matter of fact, IP services (such as QOS) on a GSR depend entirely on the line cards involved. For example, an "Engine0" line card will not perform QOS with the performance of an "Engine2" line card. Mainly because QOS on an "Engine0" card would be processed by a R5000 on the card (tasks such as setting DSCP values etc.) whereas on an "Engine2" line card most QOS processing would be done by ASICs. (I was using QOS only as an example for possible IP services. So please don't start a discussion about hardware queues etc. :) I don't see why you couldn't use PXF processors instead of ASICs to give line cards a boost.

"Close, but the architecture is new, not derived from the PXF at all. Check out the quote below, notice how the linecard is a 1 port OC48, but its architecture is referred to as ISE."

Well, the wording "programmable adaptive network processor that combines the hardware performance of application-specific integrated circuits with the flexibility of software" sounds like "I'm a PXF architecture" to me. It describes the properties of the PXF processor in marketing terms. I still believe that ISE is just a marketing term and the technology underneath is PXF-based.

/MAB.
G.Mong 12/4/2012 | 7:45:27 PM
re: Cisco Storms the Metro Edge In 10k,two PXFs are used in a 4 plus 8 array.
In each data path (fast path),8 micro-processors do different jobs(Netflow,ACL,MPLS,etc).And in 10k's documentations,it doesn't mention TCAM(??).

In ISE's white paper,it does mention TCAM several times.And it seems the TCAM does the all the high-speed look-up jobs(ACL,MPLS,uni and multi ip forwarding). And it mention micro-coded NP,too.So I feel rather confused about which approach ISE uses:R5000+TCAM,PXF or PXF+TCAM???

Anyone can clarify this?

RouteThis 12/4/2012 | 7:45:23 PM
re: Cisco Storms the Metro Edge Lightreading,

What about doing an article on Wavesmith or Gotham type boxes?? These guys are both in carrier labs and while they may not have the bunch to "storm" into a network, they offer some great multi-service (but not really metro) edge capabilities.

(Perhaps you've already done something on these guys in the recent past - In case anyone thinks this is a plug, I don't work for either of these companies)
mcasaes 12/4/2012 | 7:45:19 PM
re: Cisco Storms the Metro Edge I'm not quite sure if the current Toaster could do the raw # of pps needed for these ISE boards.
Worth notice is that some of the others "PXF"-children (7300, 7600) have some fat pipes, so it maybe not be the case ?
Fiberfreak 12/4/2012 | 7:45:15 PM
re: Cisco Storms the Metro Edge People (read: Customers and integrators) lambast Cisco because they either try to strong arm or spread FUD when you ask the hard questions.

Their boxes never have the capacity they advertise due to some gotcha or another - and you have to absolutely beat it out of them - makes them seem like they are lying or hiding something all the time. If there is no trust then there is no sale....
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