two questions - SWAG answers entertained

Jason Lewis jlewis at packetnexus.com
Mon Oct 8 14:50:49 UTC 2007


I've had a few questions about the data I posted.  That was a total of
all ribs I have access to, not a summary of uniques.  I thought maybe a
report of OIX would be a better example.  Here's the full rib report:

Total prefixes seen in RIB:             238997
Total origin ASes seen in RIB:          26514
Total 32 bit ASes seen in RIB:          0
Total peer pairs seen in RIB:           55947

RIB Peers not found in all other tables: 4
RIB Prefixes not exactly matched in all other tables:    123
RIB more specific prefix count: 123

Number of unique prefixes in RIB compared against all data: 123
Number of unique origin ASes in RIB compared against all data: 4

Number of ASes announcing only one prefix:      11229
Number of Transit Only ASes:    125
RIB average path length: 4.09

All tables Total IP Coverage:                                2549455474
59.4%
All tables Total IP Coverage including BOGON:                3220536059
75.0%
RIB Total IP Coverage:                                       1790591076
41.7%
RIB Total IP Coverage including BOGON:                       3201119844
74.5%

RIB IP Coverage by Region
        RIB IP Coverage for
ARIN                                             1038310514 46.2%
        RIB IP Coverage for
APNIC                                             399476161 17.8%
        RIB IP Coverage for
RIPENCC                                           312598027 13.9%
        RIB IP Coverage for
RIPE                                              197332093 8.8%
        RIB IP Coverage for
JPIRR                                             110040248 4.9%
        RIB IP Coverage for
UNKNOWN                                           109583355 4.9%
        RIB IP Coverage for
LACNIC                                             68517416 3.0%
        RIB IP Coverage for
AFRINIC                                            12606792 0.6%

RIB Total AS
Coverage:                                                            26514

RIB AS Coverage by Region
        RIB AS Coverage for
ARIN:                                             12525     47.2%
        RIB AS Coverage for
RIPE:                                             10418     39.3%
        RIB AS Coverage for
APNIC:                                             2648     10.0%
        RIB AS Coverage for
LACNIC:                                             377     1.4%
        RIB AS Coverage for
JPNIC:                                              150     0.6%
        RIB AS Coverage for
KRNIC:                                              131     0.5%
        RIB AS Coverage for
AFRINIC:                                             84     0.3%
        RIB AS Coverage for
ID-NIC:                                              77     0.3%
        RIB AS Coverage for
CNNIC:                                               52     0.2%
        RIB AS Coverage for
PRIVATE:                                             21     0.1%
        RIB AS Coverage for
TWNIC:                                               17     0.1%
        RIB AS Coverage for
VNNIC:                                               13     0.0%
        RIB AS Coverage for
IANA:                                                 1     0.0%

Prefix length distribution
        /8:     20
        /9:     9
        /10:    16
        /11:    37
        /12:    136
        /13:    271
        /14:    483
        /15:    946
        /16:    9891
        /17:    4240
        /18:    6843
        /19:    14700
        /20:    17674
        /21:    15748
        /22:    20131
        /23:    21032
        /24:    126563
        /25:    619
        /26:    638
        /27:    353
        /28:    138
        /29:    102
        /30:    122
        /32:    50

Path length distribution:
        Hops in Path: Count
        1: 9247
        2: 579155
        3: 2947058
        4: 2928712
        5: 1317423
        6: 521409
        7: 264027
        8: 121191
        9: 73516
        10: 37090
        11: 23273
        12: 14804
        13: 13515
        14: 8818
        15: 7767
        16: 3740
        17: 885
        18: 888
        19: 1130
        20: 386
        21: 80
        22: 103
        23: 46
        24: 7
        25: 14
        26: 59
        27: 30
        28: 1164
        29: 7

Prepend length distribution:
        # Prepends in Path: Count
        2: 531052
        3: 283552
        4: 200956
        5: 90091
        6: 50456
        7: 45784
        8: 8428
        9: 15447
        10: 8736
        11: 15066
        12: 459
        13: 1489
        14: 46
        16: 67
        17: 22
        20: 14
        21: 2
        22: 8
        25: 4

Total AS Sets: 1874



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