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I have searched and searched Cisco's website and i can't the MTBF for the 1721 router and the 3825 router. I need this info for a school project, i have to figure the mttf between two routers with no redundent links.
Thanks

2006-12-07 15:59:48 · 2 answers · asked by hello there... 3 in Computers & Internet Computer Networking

I can't complete my project until i find those two mtbf numbers. Thanks

2006-12-07 16:36:34 · update #1

2 answers

For the 1721 router, the MTBF is 422,000 hours using the Bellcore Parts Count Method, and this includes the chassis and external power supply in that figure. The 3825 router is a different story because the answer is "it depends" on the MTBF for the processor, the chassis, the power supplies, and which network modules are installed. For example, the power supplies are given an MTBF value of 682,000 hours. The chassis is given a value of 400,000 hours. So then a chassis plus power supply works out to about 252,000 hours for the composite system. The MTBF values of individual network modules are usually on the data sheets for those cards and would have to be factored in too. I'm assuming you know how to do the calculations, if not, re-post another Q and we'll go over that too.

2006-12-09 02:55:00 · answer #1 · answered by networkmaster 5 · 0 0

the two require which you pass the Cisco exams (frequently provided by employing Pearson VUE). The CCNP has 4 exams you need to pass, and the CCIE calls for you to pass a 2 hour written try to an 8 hour lab try (those value over $1000 US). The CCIE is heavily harder-- in basic terms 18-19000 human beings have it in the worldwide. subsequently the rationalization they use the be conscious 'expert' and not 'expert'. The CCNP demands which you have a CCNA, yet you could take the CCIE try without the different skills. Cisco additionally recommends you have a minimum of three years correct journey beforehand taking the CCIE try. Your superb guess is to be taught for CCNP (yet start up with CCNA in case you have not got already got it)-- in case you already understand all the content fabric, you could consistently attempt for the CCIE, in spite of the incontrovertible fact that that's high priced and not something you would be wanting to fail. take a seem on the syllabus (below) and notice what you recognize.

2016-12-18 09:40:41 · answer #2 · answered by casimir 3 · 0 0

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