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   AS6447 BGP Routing Table Analysis Report
   
  BGP data obtained from AS6447
Report last updated at Thu Jun 8 00:00:00 2023 (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)981347   Change in FIB Size57   Change (%)0.006
    All BGP entries (RIB)26414907
    RIB/FIB ratio (26414907/981347)26.9170
      Valid entries26414907
      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)3060934820
    Total address space advertised (prefix length)0.48867482
    Percentage of IPv4 space advertised (3060934820/4294967295)71.267942
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3119
    Average address span (as prefix size)20.3931
Average prefix length22.8777

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 aggregates531828       Specifics as % of FIB entries (531828/981347)54.1937
    Specifics as % of address span (1194333199/3060934820)39.0186    
    Specifics where AS prepended Path matches aggregate213134         AS-P_Path-Match % (213134/531828)40.08
    AS Path matches aggregate232681         AS-Path-Match % (232681/531828)43.7512
    AS Origin matches aggregate405167         AS-Origin-Match % (405167/531828)76.1838
    Root Prefixes449519
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0391889
      Root Prefixes with depth 146057
      Root Prefixes with depth 29253
      Root Prefixes with depth 31707
      Root Prefixes with depth 4469
      Root Prefixes with depth 598
      Root Prefixes with depth 635
      Root Prefixes with depth 710
      Root Prefixes with depth 81

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 ASes75207       ASes visible in only one AS path44614
    Origin only ASes63235         Origin ASs announced via a single AS path43717
    Transit only ASes538       Originating AS ATOM count74669
    Mixed ASes11434         Originating AS ATOM compression0.0761
    Multi-Origin Prefixes5273    
    ASes originating a single prefix25921    
    Average entries per origin AS13.1426         Maximum entries for an origin AS (AS58224)1828
    Average address range span for an origin AS40993.3817         Maximum address range for an origin AS (AS749)228720384

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 Paths3013331       Unique AS prepended Paths3240762
AS Paths used in FIB125328       AS Paths using prepending836801
    AS paths associated with a single FIB entry59081       AS Paths using private ASs298
    Average AS path length5.0622       Number of Prefixes with Selected AS Prepending Paths182028
      Maximum AS Path length16       Number of Prefixes with AS Prepending Paths182028
    Average address weighted AS path length6.5457       Maximum prepended AS Path length163
    Average entries per AS Path0.3257       Average entries per FIB AS Path7.8302
    AS Paths per origin AS40.3559       FIB AS Paths per origin AS1.6784
      AS PATH ATOM compression0.1277    

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 /817       % Prefix /80.00
    Prefix count /914       % Prefix /90.00
    Prefix count /1039       % Prefix /100.00
    Prefix count /11103       % Prefix /110.01
    Prefix count /12302       % Prefix /120.03
    Prefix count /13582       % Prefix /130.06
    Prefix count /141214       % Prefix /140.12
    Prefix count /152149       % Prefix /150.22
    Prefix count /1613669       % Prefix /161.39
    Prefix count /178515       % Prefix /170.87
    Prefix count /1814756       % Prefix /181.50
    Prefix count /1925995       % Prefix /192.65
    Prefix count /2045573       % Prefix /204.64
    Prefix count /2154732       % Prefix /215.58
    Prefix count /22114357       % Prefix /2211.65
    Prefix count /23107680       % Prefix /2310.97
    Prefix count /24588412       % Prefix /2459.96
    Prefix count /25489       % Prefix /250.05
    Prefix count /26623       % Prefix /260.06
    Prefix count /271027       % Prefix /270.10
    Prefix count /2874       % Prefix /280.01
    Prefix count /29106       % Prefix /290.01
    Prefix count /3039       % Prefix /300.00
    Prefix count /3123       % Prefix /310.00
    Prefix count /32857       % Prefix /320.09

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 /817       % Prefix /80.00
    Prefix count /99       % Prefix /90.00
    Prefix count /1039       % Prefix /100.01
    Prefix count /1195       % Prefix /110.02
    Prefix count /12263       % Prefix /120.06
    Prefix count /13478       % Prefix /130.11
    Prefix count /141016       % Prefix /140.23
    Prefix count /151642       % Prefix /150.37
    Prefix count /1610238       % Prefix /162.28
    Prefix count /174459       % Prefix /170.99
    Prefix count /186908       % Prefix /181.54
    Prefix count /1915042       % Prefix /193.35
    Prefix count /2019291       % Prefix /204.29
    Prefix count /2122711       % Prefix /215.05
    Prefix count /2259738       % Prefix /2213.29
    Prefix count /2341264       % Prefix /239.18
    Prefix count /24266295       % Prefix /2459.24
    Prefix count /251       % Prefix /250.00
    Prefix count /262       % Prefix /260.00
    Prefix count /274       % Prefix /270.00
    Prefix count /281       % Prefix /280.00
    Prefix count /291       % Prefix /290.00
    Prefix count /301       % Prefix /300.00
    Prefix count /314       % Prefix /310.00
    Prefix count /320       % 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 1175928820       % Addresses at AS distance 14.1
    Addresses at AS distance 2148554788       % Addresses at AS distance 23.5
    Addresses at AS distance 31446426570       % Addresses at AS distance 334.0
    Addresses at AS distance 41688333360       % Addresses at AS distance 439.7
    Addresses at AS distance 5652329953       % Addresses at AS distance 515.3
    Addresses at AS distance 690216128       % Addresses at AS distance 62.1
    Addresses at AS distance 725040896       % Addresses at AS distance 70.6
    Addresses at AS distance 820115200       % Addresses at AS distance 80.5
    Addresses at AS distance 97381760       % Addresses at AS distance 90.2
    Addresses at AS distance 10906240       % Addresses at AS distance 100.0
    Addresses at AS distance 1128160       % Addresses at AS distance 110.0
    Addresses at AS distance 125632       % Addresses at AS distance 120.0
    Addresses at AS distance 130       % Addresses at AS distance 130.0
    Addresses at AS distance 140       % Addresses at AS distance 140.0
    Addresses at AS distance 15512       % Addresses at AS distance 150.0
     
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 hops175928820       % Addresses reachable within 1 AS hops4
    Addresses reachable within 2 AS hops324483608       % Addresses reachable within 2 AS hops7
    Addresses reachable within 3 AS hops1770910178       % Addresses reachable within 3 AS hops41
    Addresses reachable within 4 AS hops3459243538       % Addresses reachable within 4 AS hops81
    Addresses reachable within 5 AS hops4111573491       % Addresses reachable within 5 AS hops96
    Addresses reachable within 6 AS hops4201789619       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops4226830515       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4246945715       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4254327475       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4255233715       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4255261875       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4255267507       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops4255267507       % Addresses reachable within 13 AS hops99
    Addresses reachable within 14 AS hops4255267507       % Addresses reachable within 14 AS hops99
    Addresses reachable within 15 AS hops4255268019       % Addresses reachable within 15 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 hops31       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops16654       % ASes reachable at 2 AS hops22
    ASes reachable at 3 AS hops44633       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops11095       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1922       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops588       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops203       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops71       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops9       % 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
    ASes reachable at 14 AS hops0       % ASes reachable at 14 AS hops0
    ASes reachable at 15 AS hops0       % ASes reachable at 15 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 hops32       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops16686       Cumulative % ASes by AS hops 222.2
    ASes reachable by 3 AS hops61319       Cumulative % ASes by AS hops 381.5
    ASes reachable by 4 AS hops72414       Cumulative % ASes by AS hops 496.3
    ASes reachable by 5 AS hops74336       Cumulative % ASes by AS hops 598.8
    ASes reachable by 6 AS hops74924       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops75127       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops75198       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops75207       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops75207       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops75207       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops75207       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops75207       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops75207       Cumulative % ASes by AS hops 14100.0
    ASes reachable by 15 AS hops75207       Cumulative % ASes by AS hops 15100.0

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 /41       % AS's announcing span of /40.0000
    AS's announcing span of /56       % AS's announcing span of /50.0001
    AS's announcing span of /610       % AS's announcing span of /60.0001
    AS's announcing span of /725       % AS's announcing span of /70.0003
    AS's announcing span of /845       % AS's announcing span of /80.0006
    AS's announcing span of /979       % AS's announcing span of /90.0011
    AS's announcing span of /10101       % AS's announcing span of /100.0014
    AS's announcing span of /11171       % AS's announcing span of /110.0023
    AS's announcing span of /12245       % AS's announcing span of /120.0033
    AS's announcing span of /13421       % AS's announcing span of /130.0057
    AS's announcing span of /14846       % AS's announcing span of /140.0114
    AS's announcing span of /151738       % AS's announcing span of /150.0234
    AS's announcing span of /161810       % AS's announcing span of /160.0243
    AS's announcing span of /172508       % AS's announcing span of /170.0337
    AS's announcing span of /183838       % AS's announcing span of /180.0516
    AS's announcing span of /195112       % AS's announcing span of /190.0687
    AS's announcing span of /207687       % AS's announcing span of /200.1034
    AS's announcing span of /2110415       % AS's announcing span of /210.1400
    AS's announcing span of /2212490       % AS's announcing span of /220.1679
    AS's announcing span of /238892       % AS's announcing span of /230.1196
    AS's announcing span of /2417911       % AS's announcing span of /240.2408
    AS's announcing span of /254       % AS's announcing span of /250.0001
    AS's announcing span of /264       % AS's announcing span of /260.0001
    AS's announcing span of /277       % AS's announcing span of /270.0001
    AS's announcing span of /282       % AS's announcing span of /280.0000
    AS's announcing span of /291       % AS's announcing span of /290.0000
    AS's announcing span of /300       % AS's announcing span of /300.0000
    AS's announcing span of /310       % AS's announcing span of /310.0000
    AS's announcing span of /323       % AS's announcing span of /320.0000

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 Count175281
Average AS Connectivity Degree (350562/75207)4.6613
Average AS Connectivity IN:OUT Degree0.2683
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 Path549841Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path525797Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin361088Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation361123Report (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 Thu Jun 8 00:00:00 2023 (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