rip routes

[Pedro Marques]

I ran a small script on cisco's 6bone-router RIP table trying to find out
the average metrics on the RIP routes. Note that cisco doesn't receive
all rip routes (we filter inbound all the prefixes we source into bgp and
some other prefixes we have bgp routes to).

As an heuristic i picked 5 as the maximum path length between cisco an
any site trying to spot routes with a metric which is too high.

This most likely falls in the category of useless statistics but what the
heck... some of you even may find this interesting.

  Pedro.

------------------------------------------------------------------------------
  metric	routes		percentage
------------------------------------------------------------------------------
      2		    9		  7.0%
      3		   44		 34.4%
      4		   21		 16.4%
      5		   14		 10.9%
      6		   10		  7.8%
      7		    7		  5.5%
      8		    3		  2.3%
      9		    1		  0.8%
     10		    1		  0.8%
     12		    1		  0.8%
     15		    6		  4.7%
     16		   11		  8.6%
  total		  134		100.0%


------------------------------------------------------------------------------
			Possibly bogus RIP routes
------------------------------------------------------------------------------
  route							 metric
------------------------------------------------------------------------------
  5F02:2F00::0/32                          		   16
  5F06:B500:8158:1A00::0/80                		   16
  5F0B:2900::0/32                          		   16
  5F00:3100::0/32                          		   16
  5F02:3000::0/32                          		   16
  5F07:3D00:8DC9:200:2::0/80               		   16
  5F0B:1700:C047:1400::0/64                		   16
  5F06:B500:8158:1A00:1:0:8158:1A01/128    		   16
  5F0C:B300::0/32                          		   16
  5F15:9100::0/32                          		   16
  5F00:3100:8106:3300::0/80                		   16
  5F00:1000:0:F:C::0/80                    		   15
  5F00:1000:0:F:D::0/80                    		   15
  5F00:1000:0:F:F::0/80                    		   15
  5F03:1200:C13F:AF00::0/64                		   15
  5F03:1200:C13F:AF01::0/64                		   15
  5F03:1200:C13F::0/48                     		   15
  5F02:3000:8DFB:D101::0/64                		   12
  5F09:F300:9842:4C00:4C:0:C067:7B99/128   		   10
  5F02:3000:8DFB:D100::0/64                		    9
  5F1A:6D00:C269:A600::0/64                		    8
  5F0D:E900:80DF::0/48                     		    8
  5F0D:E900:9EA5::0/48                     		    8
  5F0C:DC00::0/32                          		    7
  5F0A:3600::0/32                          		    7
  5F07:5F00::0/32                          		    7
  5F0A:2F00:93AF:6300::0/80                		    7
  5F0B:1700:C10A:4200::0/80                		    7
  5F02:AD00::0/32                          		    7
  5F0B:1700:82EC::0/48                     		    7
  5F15:4100:839A:300::0/80                 		    6
  5F0C:BF00::0/32                          		    6
  5F07:2B00:82E1:F700:1A::0/80             		    6
  5F00:1B00:8008::0/48                     		    6
  5F02:BD00:C626::0/48                     		    6
  5F07:2B00:82E1:F700:22::0/80             		    6
  5F02:FE00::0/32                          		    6
  5F00:E000:81F0:1700::0/64                		    6
  5F00:3000:C721:F800::0/64                		    6
  5FFF:B400:C0E7:B00::0/64                 		    6

total number of bogus routes:	40
percentage:			31%