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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Wed Sep 30 18:00:00 2020 (UTC+1000).
 

Active BGP entries (FIB)


Table Size Metrics

The trend of the size of the BGP Forwarding Table (FIB). Also the underlying BGP Routing Table (RIB). The RIB/FIB ratio is a function of the number of BGP peering sessions at the sample point. Some RIB entries are marked as unusable as an outcome of protocol operation, and these categories of unusable advertisements are tracked.

FIB / RIB Table Reports (plots)Data Sets(txt)
Active BGP entries (FIB)881619   Change in FIB Size-1   Change (%)-0.000
    All BGP entries (RIB)31550302
    RIB/FIB ratio (31550302/881619)35.7868
      Valid entries31550302
      Suppressed RIB entries0
      Damped entries0
      History entries0

Address Span Metrics

The total span of address space advertised in the BGP table, and the relationship of this value to the number and size of address prefix objects in the table.

Address Space Reports (plots)Data Sets(txt)
Total address space advertised (/32 equiv)2866084258
    Total address space advertised (prefix length)0.58356612
    Percentage of IPv4 space advertised (2866084258/4294967295)66.731224
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3251
    Average address span (as prefix size)20.3338
Average prefix length22.8254

More Specifics

The characteristics of more specific advertisements - where an advertisement is associated with a sub-span of address space of another advertisement. The metrics also look at the degree of similarity of the AS paths of the specific advertisements to the encompassing aggregate.

More-Specific Advertisement Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Entries advertising more specific prefixes of aggregates485369       Specifics as % of FIB entries (485369/881619)55.0543
    Specifics as % of address span (1166620704/2866084258)40.7043    
    Specifics where AS prepended Path matches aggregate175304         AS-P_Path-Match % (175304/485369)36.12
    AS Path matches aggregate191891         AS-Path-Match % (191891/485369)39.5351
    AS Origin matches aggregate365658         AS-Origin-Match % (365658/485369)75.3361
    Root Prefixes396250
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0342299
      Root Prefixes with depth 142772
      Root Prefixes with depth 28949
      Root Prefixes with depth 31673
      Root Prefixes with depth 4435
      Root Prefixes with depth 583
      Root Prefixes with depth 630
      Root Prefixes with depth 79

AS Numbers

The time trend of the number of unique AS numbers advertised within the BGP table. The associated metrics characterise AS's into origin only, transit only, or mixed (origin and transit), and also look at the trends of advertised address space as related to the number of ASes.

AS Reports (plots)Data Sets(txt)  Additional Reports (plots)Data Sets(txt)
Unique ASes70351       ASes visible in only one AS path39970
    Origin only ASes59140         Origin ASs announced via a single AS path39195
    Transit only ASes410       Originating AS ATOM count69941
    Mixed ASes10801         Originating AS ATOM compression0.0793
    Multi-Origin Prefixes6939    
    ASes originating a single prefix24547    
    Average entries per origin AS12.6052         Maximum entries for an origin AS (AS22773)3647
    Average address range span for an origin AS40978.5999         Maximum address range for an origin AS (AS4134)116039424

AS Paths

The time trend of the number of unique AS Paths advertised within the BGP table. The associated metrics look at trends of average path length, and BGP table entries per path.

AS Reports (plots)Data Sets(txt)  Additional Reports (plots)Data Sets(txt)
Unique AS Paths3770400       Unique AS prepended Paths4031175
AS Paths used in FIB122332       AS Paths using prepending1046656
    AS paths associated with a single FIB entry58327       AS Paths using private ASs887
    Average AS path length5.0460       Number of Prefixes with Selected AS Prepending Paths165263
      Maximum AS Path length14       Number of Prefixes with AS Prepending Paths165263
    Average address weighted AS path length6.5087         Maximum prepended AS Path length55
    Average entries per AS Path0.2338       Average entries per FIB AS Path7.2068
    AS Paths per origin AS53.9083       FIB AS Paths per origin AS1.7491
      AS PATH ATOM compression0.1388    

Prefix Length Distributions

The time trend of the distribution of BGP Table entries by address prefix length.

Prefix Length Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Prefix Count(data)   % Prefix distribution(data)
    Prefix count /811       % Prefix /80.00
    Prefix count /912       % Prefix /90.00
    Prefix count /1039       % Prefix /100.00
    Prefix count /11100       % Prefix /110.01
    Prefix count /12290       % Prefix /120.03
    Prefix count /13578       % Prefix /130.07
    Prefix count /141187       % Prefix /140.13
    Prefix count /152005       % Prefix /150.23
    Prefix count /1613582       % Prefix /161.54
    Prefix count /178520       % Prefix /170.97
    Prefix count /1814341       % Prefix /181.63
    Prefix count /1926604       % Prefix /193.02
    Prefix count /2042798       % Prefix /204.85
    Prefix count /2151836       % Prefix /215.88
    Prefix count /22108067       % Prefix /2212.26
    Prefix count /2392590       % Prefix /2310.50
    Prefix count /24511766       % Prefix /2458.05
    Prefix count /251915       % Prefix /250.22
    Prefix count /261342       % Prefix /260.15
    Prefix count /271023       % Prefix /270.12
    Prefix count /28269       % Prefix /280.03
    Prefix count /29313       % Prefix /290.04
    Prefix count /30192       % Prefix /300.02
    Prefix count /31139       % Prefix /310.02
    Prefix count /322100       % Prefix /320.24

Root Prefix Length Distributions

The time trend of the distribution of Root BGP Table entries by address prefix length.

Root Prefix Length Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Root Prefix Count(data)   % Prefix distribution(data)
    Prefix count /811       % Prefix /80.00
    Prefix count /97       % Prefix /90.00
    Prefix count /1037       % Prefix /100.01
    Prefix count /1192       % Prefix /110.02
    Prefix count /12246       % Prefix /120.06
    Prefix count /13465       % Prefix /130.12
    Prefix count /14993       % Prefix /140.25
    Prefix count /151581       % Prefix /150.40
    Prefix count /1610245       % Prefix /162.59
    Prefix count /174417       % Prefix /171.11
    Prefix count /186644       % Prefix /181.68
    Prefix count /1915007       % Prefix /193.79
    Prefix count /2019228       % Prefix /204.85
    Prefix count /2121995       % Prefix /215.55
    Prefix count /2257058       % Prefix /2214.40
    Prefix count /2335686       % Prefix /239.01
    Prefix count /24222499       % Prefix /2456.15
    Prefix count /2515       % Prefix /250.00
    Prefix count /267       % Prefix /260.00
    Prefix count /279       % Prefix /270.00
    Prefix count /283       % Prefix /280.00
    Prefix count /291       % Prefix /290.00
    Prefix count /302       % Prefix /300.00
    Prefix count /310       % Prefix /310.00
    Prefix count /322       % Prefix /320.00

AS Diameter Reports

The time trend of the reacahbility of addresses and AS's using AS distance from the sample point to the origin AS as the diameter metric.

AS Diameter Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Addresses by AS distance(data)   Address percentage by AS distance(data)
    Addresses at AS distance 00       % Addresses at AS distance 00.0
    Addresses at AS distance 1227194044       % Addresses at AS distance 15.6
    Addresses at AS distance 2205162039       % Addresses at AS distance 25.1
    Addresses at AS distance 31365185268       % Addresses at AS distance 333.9
    Addresses at AS distance 41517994013       % Addresses at AS distance 437.6
    Addresses at AS distance 5589181211       % Addresses at AS distance 514.6
    Addresses at AS distance 677847811       % Addresses at AS distance 61.9
    Addresses at AS distance 719300224       % Addresses at AS distance 70.5
    Addresses at AS distance 814739488       % Addresses at AS distance 80.4
    Addresses at AS distance 910216704       % Addresses at AS distance 90.3
    Addresses at AS distance 105829376       % Addresses at AS distance 100.1
    Addresses at AS distance 1150688       % Addresses at AS distance 110.0
    Addresses at AS distance 124096       % Addresses at AS distance 120.0
    Addresses at AS distance 130       % Addresses at AS distance 130.0
     
Cumulative Address by AS distance(data)   Cumulative % Address by AS distance(data)
    Addresses reachable within 0 AS hops0       % Addresses reachable within 0 AS hops0
    Addresses reachable within 1 AS hops227194044       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops432356083       % Addresses reachable within 2 AS hops10
    Addresses reachable within 3 AS hops1797541351       % Addresses reachable within 3 AS hops44
    Addresses reachable within 4 AS hops3315535364       % Addresses reachable within 4 AS hops82
    Addresses reachable within 5 AS hops3904716575       % Addresses reachable within 5 AS hops96
    Addresses reachable within 6 AS hops3982564386       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops4001864610       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4016604098       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4026820802       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4032650178       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4032700866       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4032704962       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops4032704962       % Addresses reachable within 13 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops1       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops41       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17044       % ASes reachable at 2 AS hops24
    ASes reachable at 3 AS hops40629       % ASes reachable at 3 AS hops57
    ASes reachable at 4 AS hops10312       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1752       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops321       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops150       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops94       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops7       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops0       % ASes reachable at 10 AS hops0
    ASes reachable at 11 AS hops0       % ASes reachable at 11 AS hops0
    ASes reachable at 12 AS hops0       % ASes reachable at 12 AS hops0
    ASes reachable at 13 AS hops0       % ASes reachable at 13 AS hops0
     
Cumulative ASes by AS hops(data)   Cumulative % ASes by AS hops(data)
    ASes reachable by 0 AS hops1       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops42       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops17086       Cumulative % ASes by AS hops 224.3
    ASes reachable by 3 AS hops57715       Cumulative % ASes by AS hops 382.0
    ASes reachable by 4 AS hops68027       Cumulative % ASes by AS hops 496.7
    ASes reachable by 5 AS hops69779       Cumulative % ASes by AS hops 599.2
    ASes reachable by 6 AS hops70100       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops70250       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops70344       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops70351       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops70351       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops70351       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops70351       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops70351       Cumulative % ASes by AS hops 13100.0

AS Announcement Reports

The time trend of total span of address space advertised by ASes, using truncated prefix length as the span metric.

AS Announcements ReportsData Sets(txt)  Percentage ReportsData
Originating Addresses AS Count(data)   Originating Addresses % AS Count(data)
    AS's announcing span of /56       % AS's announcing span of /50.0001
    AS's announcing span of /611       % AS's announcing span of /60.0002
    AS's announcing span of /725       % AS's announcing span of /70.0004
    AS's announcing span of /843       % AS's announcing span of /80.0006
    AS's announcing span of /977       % AS's announcing span of /90.0011
    AS's announcing span of /10111       % AS's announcing span of /100.0016
    AS's announcing span of /11179       % AS's announcing span of /110.0026
    AS's announcing span of /12246       % AS's announcing span of /120.0035
    AS's announcing span of /13428       % AS's announcing span of /130.0062
    AS's announcing span of /14854       % AS's announcing span of /140.0123
    AS's announcing span of /151748       % AS's announcing span of /150.0251
    AS's announcing span of /161870       % AS's announcing span of /160.0269
    AS's announcing span of /172414       % AS's announcing span of /170.0347
    AS's announcing span of /183808       % AS's announcing span of /180.0548
    AS's announcing span of /195067       % AS's announcing span of /190.0729
    AS's announcing span of /207459       % AS's announcing span of /200.1073
    AS's announcing span of /2110233       % AS's announcing span of /210.1472
    AS's announcing span of /2211903       % AS's announcing span of /220.1712
    AS's announcing span of /237246       % AS's announcing span of /230.1042
    AS's announcing span of /2415718       % AS's announcing span of /240.2260
    AS's announcing span of /2522       % AS's announcing span of /250.0003
    AS's announcing span of /2610       % AS's announcing span of /260.0001
    AS's announcing span of /2721       % AS's announcing span of /270.0003
    AS's announcing span of /2818       % AS's announcing span of /280.0003
    AS's announcing span of /2912       % AS's announcing span of /290.0002
    AS's announcing span of /300       % AS's announcing span of /300.0000
    AS's announcing span of /311       % AS's announcing span of /310.0000
    AS's announcing span of /324       % AS's announcing span of /320.0001

AS Connectivity Reports

This set of reports lists all visible AS's using a number of ordering criteria. The reports order AS's by the total span of addresses originated by an AS, the total span of addresses reachable via an AS, and the totspan of originating plus transit addresses via each AS. Each AS in an AS path has an adjacent AS closer to the sample point, and an adjacent AS further from the sample point. The number of such pairwise adjacencies is reported for each AS. The average AS Connectivity Degree is the average number of adjacent AS's for an AS.

  
AS Connectivity ReportData
AS Adjacency Count166112
Average AS Connectivity Degree (332224/70351)4.7224
Average AS Connectivity IN:OUT Degree0.2710
AS Names
AS's ordered by Originating Address
AS's ordered by Transit Address
AS's ordered by Originating + Transit Address
AS's ordered by AS Adjacency
AS's ordered by Downstream AS Adjacency
AS's ordered by Upstream AS Adjacency
AS Adjacency
Inconsistent Origin AS Prefixes

Aggregation Reports

This set of reports lists all potential aggregation of a number of specific routes into an aggregate route. The aggregation criteria include a match of the original AS path, which may include prepended AS's, a match of the reduced AS Path, and a match on the Origin AS only. As this view is taken from a single sample point, this list is not definitive, and the report will propose potential aggregation actions which may not be feasible for the Origin AS. The report also applies a prefix length filter to all prefixes, accepting only those prefixes which pass the following ruleset:

Aggregation possibilities are identified within this filtered prefix set.

Route Aggregation ReportsData
Aggregation Potential Summary(data)
Aggregation Potential Summary(data)
    Aggregation using prepended AS Path511195Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path494410Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin322680Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation322727Report (sort by %reduction)Report (sort by reduction)BGP Table

BGP Table
BGP Table
Table Summary Report


BGP Report

BGP data obtained from the boundary of AS6447

Report last updated at Wed Sep 30 18:00:00 2020 (UTC+1000).

Data prior to 11 April 97 interpreted from data gathered by Erik-Jan Bos, SURFnet.

BGP table analyser written and maintained by Geoff Huston.


Footnote