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Cisco 7200 VXR

What does VXR mean?Are NPE and I/O Controller necessary for Cisco 7200 VXR?What are their functions?

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Re: Cisco 7200 VXR

VXR stands for Versatile Switched Router. Yes the NPE and I/O controller are necessary. The NPE is the network processing engine. The I/O controller is where the console port is and where NVRAM is stored. Take a look through the 7200 VXR Product Overview for more information:

http://www.cisco.com/en/US/products/hw/routers/ps341/products_installation_guide_chapter09186a008009c1c2.html

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