For the first topic, I have been finalizing my lab hardware setup and deciding what needs to be updated for the v4.0 blueprint. I have lots of old series 2500 and 2600 routers from past studies. Checking the INE topology I can use the 2500's for the backbone routers. So, just need to upgrade the IOS on them to support ipv6 ospf. Okay...how hard can that be. Well three days since trying to get it working I finally finished.
I started by trying the typical copy tftp flash command. Each time the transfer via FLH would start but immediately abort. I tried crossover cabling, moving from Windows tftp to a linux server, etc, etc and always the same thing. Tried on my other 2500 series routers with the same failure. Searched the forums but no answers. Posted on the INE forum but no patience for a reply so I keep searching...I finally came across a seemingly unrelated message (TekTips) about the flash being read only due to a hardware issue. A quick check of show ver indicated:
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read ONLY)
Configuration register is 0x2102
This setting of x2102 on the configuration register sets the flash memory to read only. So, the issue was never with the network or servers, the router was just unable to write what it was trying to receive to the flash.
Issuing a confreg 0x2101 and then a reload brings the router to a mini boot prompt with the flash memory now set to read-write. I was then able to copy the new IOS via tftp. Set the conf reg back to 0x2102 and reloaded.
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This is the rack topology I am configuring as indicated on on INE's site: http://www.ine.com/topology.htm
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