Dual node vs "Reliable IP" Architecture
http://www.nspllc.com/New%20Pages/Reliable%20IP%20Nodes.pdf Argues that by going from a dual-router POP design to a single redundant router configuration, I can reduce annual downtime costs by 93% (?) and reduce CAPEX and OPEX (seems logical). Also mentions that the single redundant router can get closer to the ever-elusive 5-9's. Anyone doing this in their network? Is there validity in the claims in this white paper? Anyone looked at the Alcatel product that apparently funded this paper? Pete.
http://www.nspllc.com/New%20Pages/Reliable%20IP%20Nodes.pdf
Argues that by going from a dual-router POP design to a single redundant router configuration, I can reduce annual downtime costs by 93% (?) and reduce CAPEX and OPEX (seems logical).
Also mentions that the single redundant router can get closer to the ever-elusive 5-9's.
Anyone doing this in their network? Is there validity in the claims in this white paper? Anyone looked at the Alcatel product that apparently funded this paper?
I'd believe the numbers in this, what I don't believe yet though is that there are products available that true give the same level of redundancy that having two boxes does... Regards, Neil.
On Thu, 10 Apr 2003, Neil J. McRae wrote:
Anyone doing this in their network? Is there validity in the claims in this white paper? Anyone looked at the Alcatel product that apparently funded this paper?
I'd believe the numbers in this, what I don't believe yet though is that there are products available that true give the same level of redundancy that having two boxes does...
I've always found that these types of papers and products always miss one big area of failure, at least in my experience. What happens when the highly redundant device is skewered by a fork lift? Yes, I've had this happen. At least if you have a dual router config, and separate those routers physically, you have a chance of surviving such problems. -- Brandon Ross AIM: BrandonNR VP Operations ICQ: 2269442 Sockeye Networks
Brandon Ross wrote:
I've always found that these types of papers and products always miss one big area of failure, at least in my experience. What happens when the highly redundant device is skewered by a fork lift? Yes, I've had this happen. At least if you have a dual router config, and separate those routers physically, you have a chance of surviving such problems.
Apparently your skeweree was insufficiently armored -- an obvious design flaw. Where do you draw the line? Probability trees aside, you design your system and take your chances. Peter E. Fry
On Thu, 10 Apr 2003, Peter E. Fry wrote:
Apparently your skeweree was insufficiently armored -- an obvious design flaw.
LOL, indeed.
Where do you draw the line? Probability trees aside, you design your system and take your chances.
Of course, you just do the best you can do with the budget that you have and the business requirements. To date I haven't seen a significant benefit to using an integrated redundant device, all things considered. -- Brandon Ross AIM: BrandonNR VP Operations ICQ: 2269442 Sockeye Networks
participants (4)
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Brandon Ross -
neil＠DOMINO.ORG -
Pete Kruckenberg -
Peter E. Fry