What is the MTTR and MTBF of a  Cisco Catalyst 4500 Series Switches?
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There is not enough information to answer this question. Switches and routers have a number of different components. Each component has a separate MTBF and MTTR. To answer the question fully would require knowledge of the individual components of the switch in question. In addition, you would need to know if any of the components have redundancies built in. \n\nI have tried to obtain this information in the past from different sources. The best place to get the information is to contact Cisco directly. You can contact their pre-sales department (obtain the number from their website).\n\nI obtained data from the 6500 series switches and they generally tend to be near 200,000 hours (MTBF).\n\nThe MTTR or mean time to repair is composed of two components, the time to respond and the time to fix. This can vary based upon a number of factors (IT operation procedures, sparing policies, weekend vs. weekday). In general, Cisco tends to default to a one hour MTTR when calculating the MTBF of the entire piece of equipment.
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You can search some reviews in www.juniper.net/training/certification/mt_series_track.html
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Try this link. Download the Catalyst software and drivers.\nhttps://support.ati.com/ics/support/default.asp?deptID=894&task=knowledge&folderID=27
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depends on the router model/series, memory, etc.\ncheck cisco.com
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Do you think those would help?\n\nhttp://scholar.google.com/scholar?q=design%20of%20a%20Lithium%20Niobate%20modulator%2040%20gbps&num=20&hl=en&lr=&safe=off&rls=GGLR,GGLR:2005-38,GGLR:en&oi=scholart
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It's a computer term:\n\nhttp://www.cisco.com/en/US/products/hw/optical/ps2011/products_implementation_design_guide_chapter09186a00802212a7.html
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The part number is NM-1E for the 1-Port Ethernet Network Module that plugs into the network module slot on the 2600 router.  List price is $1,000.  That is the 10Mbps module.  The part number for the 10/100 module is NM-1FE-FX-V2 and the list price on that is $2700.  It might also be listed without the V2 if you do some searching on Cisco's web site.  Link to the Data Sheet is here.  http://www.cisco.com/en/US/products/hw/routers/ps274/products_data_sheet09186a0080091b89.html
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I do not know, but check out this link, other people have reviewed them already!\n\nhttp://www.mtbr.com/reviews/manufacturers/8465/\n\nThat is, if the site is working fully.
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try this site out it list a few but try getting the NT Port one have used it a few years back and works good as well as the port I/O one but try a few to get what you need hope it will help \n\nhttp://www.efg2.com/Lab/Library/Delphi/IO/PortIO.htm
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u can visit www.Cisco.com
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Go here for an automatic HJT analysis:\nhttp://hjt.networktechs.com/
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http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/en_igrp.htm
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the minimum current needed to cause the thyristor to latch/switch state
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try this they have array of products that deals w/ rs-232, 422,485 interfaces & conversions.
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go to http://ucp.ece.gatech.edu/content/3042/3042_WA2_fall03.pdf#search='pulse%20width%20modulator%20with%20555%20timer%20and%20LM311%20comparator\n\nor\nwww.colorado.edu/~ecn4618/lab2.pdf\n\nI hope this helps you somewhat.
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The ce-500 line of switches that I could find (such as the  Catalyst Express 500 24-Port 10 100 PoE Switch) support SFP uplink ports.  The SFP ports can take multimode or singlemode fiber ports.
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Technically it has to be crossover BUT...\n\nNewer switches can auto sense the type of cable and electronically switch the port to crossover instead of you having to use one so a straight-through will most likely work. With an older switch there should be an uplink port with a switch to change that port from normal to crossover.