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   AS6447 BGP Routing Table Analysis Report
   
  BGP data obtained from AS6447
Report last updated at Tue Mar 7 04:40:00 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)967456   Change in FIB Size0   Change (%)0.000
    All BGP entries (RIB)26154010
    RIB/FIB ratio (26154010/967456)27.0338
      Valid entries26154010
      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)3068168934
    Total address space advertised (prefix length)0.48526923
    Percentage of IPv4 space advertised (3068168934/4294967295)71.436375
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3171
    Average address span (as prefix size)20.3693
Average prefix length22.8629

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 aggregates522444       Specifics as % of FIB entries (522444/967456)54.0018
    Specifics as % of address span (1165231015/3068168934)37.9781    
    Specifics where AS prepended Path matches aggregate215296         AS-P_Path-Match % (215296/522444)41.21
    AS Path matches aggregate232738         AS-Path-Match % (232738/522444)44.5479
    AS Origin matches aggregate398908         AS-Origin-Match % (398908/522444)76.3542
    Root Prefixes445012
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0387674
      Root Prefixes with depth 145827
      Root Prefixes with depth 29239
      Root Prefixes with depth 31675
      Root Prefixes with depth 4452
      Root Prefixes with depth 5101
      Root Prefixes with depth 632
      Root Prefixes with depth 712

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 ASes74767       ASes visible in only one AS path44934
    Origin only ASes62887         Origin ASs announced via a single AS path43969
    Transit only ASes537       Originating AS ATOM count74230
    Mixed ASes11343         Originating AS ATOM compression0.0767
    Multi-Origin Prefixes5423    
    ASes originating a single prefix25747    
    Average FIB entries per Origin AS13.0332         Maximum entries for an origin AS (AS58224)1847
    Average address range span for an origin AS41333.2741         Maximum address range for an origin AS (AS749)210628352

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 Paths3050534       Unique AS prepended Paths3280918
AS Paths used in FIB122911       AS Paths using prepending840147
    AS paths associated with a single FIB entry57497       AS Paths using private ASs280
    Average AS path length4.9183       Number of Prefixes with Selected AS Prepending Paths152029
      Maximum AS Path length14       Number of Prefixes with AS Prepending Paths152029
    Average address weighted AS path length6.3368       Maximum prepended AS Path length163
    Average entries per AS Path0.3171       Average entries per FIB AS Path7.8712
    AS Paths per origin AS41.0957       FIB AS Paths per origin AS1.6558
      AS PATH ATOM compression0.1270    

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 /913       % Prefix /90.00
    Prefix count /1039       % Prefix /100.00
    Prefix count /11103       % Prefix /110.01
    Prefix count /12300       % Prefix /120.03
    Prefix count /13579       % Prefix /130.06
    Prefix count /141214       % Prefix /140.13
    Prefix count /152126       % Prefix /150.22
    Prefix count /1613660       % Prefix /161.41
    Prefix count /178556       % Prefix /170.88
    Prefix count /1814340       % Prefix /181.48
    Prefix count /1926297       % Prefix /192.72
    Prefix count /2045832       % Prefix /204.74
    Prefix count /2154699       % Prefix /215.65
    Prefix count /22113926       % Prefix /2211.78
    Prefix count /23106436       % Prefix /2311.00
    Prefix count /24576225       % Prefix /2459.56
    Prefix count /25481       % Prefix /250.05
    Prefix count /26619       % Prefix /260.06
    Prefix count /271012       % Prefix /270.10
    Prefix count /2875       % Prefix /280.01
    Prefix count /29114       % Prefix /290.01
    Prefix count /3028       % Prefix /300.00
    Prefix count /3132       % Prefix /310.00
    Prefix count /32733       % Prefix /320.08

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 /1197       % Prefix /110.02
    Prefix count /12264       % Prefix /120.06
    Prefix count /13478       % Prefix /130.11
    Prefix count /141016       % Prefix /140.23
    Prefix count /151636       % Prefix /150.37
    Prefix count /1610268       % Prefix /162.31
    Prefix count /174490       % Prefix /171.01
    Prefix count /186929       % Prefix /181.56
    Prefix count /1915029       % Prefix /193.38
    Prefix count /2019392       % Prefix /204.36
    Prefix count /2122920       % Prefix /215.15
    Prefix count /2259583       % Prefix /2213.39
    Prefix count /2341601       % Prefix /239.35
    Prefix count /24261227       % Prefix /2458.70
    Prefix count /251       % Prefix /250.00
    Prefix count /263       % 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 /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 1177705916       % Addresses at AS distance 14.2
    Addresses at AS distance 2170364254       % Addresses at AS distance 24.0
    Addresses at AS distance 31660434815       % Addresses at AS distance 339.2
    Addresses at AS distance 41619098402       % Addresses at AS distance 438.2
    Addresses at AS distance 5485099826       % Addresses at AS distance 511.5
    Addresses at AS distance 672751776       % Addresses at AS distance 61.7
    Addresses at AS distance 721550592       % Addresses at AS distance 70.5
    Addresses at AS distance 818610432       % Addresses at AS distance 80.4
    Addresses at AS distance 96866688       % Addresses at AS distance 90.2
    Addresses at AS distance 10886784       % Addresses at AS distance 100.0
    Addresses at AS distance 1129952       % Addresses at AS distance 110.0
    Addresses at AS distance 12512       % 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 hops177705916       % Addresses reachable within 1 AS hops4
    Addresses reachable within 2 AS hops348070170       % Addresses reachable within 2 AS hops8
    Addresses reachable within 3 AS hops2008504985       % Addresses reachable within 3 AS hops47
    Addresses reachable within 4 AS hops3627603387       % Addresses reachable within 4 AS hops85
    Addresses reachable within 5 AS hops4112703213       % Addresses reachable within 5 AS hops97
    Addresses reachable within 6 AS hops4185454989       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops4207005581       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4225616013       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4232482701       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4233369485       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4233399437       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4233399949       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops4233399949       % 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 hops31       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops16582       % ASes reachable at 2 AS hops22
    ASes reachable at 3 AS hops44415       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops11103       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1984       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops461       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops149       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops37       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops3       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops1       % 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 hops32       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops16614       Cumulative % ASes by AS hops 222.2
    ASes reachable by 3 AS hops61029       Cumulative % ASes by AS hops 381.6
    ASes reachable by 4 AS hops72132       Cumulative % ASes by AS hops 496.5
    ASes reachable by 5 AS hops74116       Cumulative % ASes by AS hops 599.1
    ASes reachable by 6 AS hops74577       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops74726       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops74763       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops74766       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops74767       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops74767       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops74767       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops74767       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 /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 /846       % AS's announcing span of /80.0006
    AS's announcing span of /980       % AS's announcing span of /90.0011
    AS's announcing span of /10102       % AS's announcing span of /100.0014
    AS's announcing span of /11166       % AS's announcing span of /110.0022
    AS's announcing span of /12243       % AS's announcing span of /120.0033
    AS's announcing span of /13427       % AS's announcing span of /130.0058
    AS's announcing span of /14841       % AS's announcing span of /140.0114
    AS's announcing span of /151721       % AS's announcing span of /150.0233
    AS's announcing span of /161856       % AS's announcing span of /160.0251
    AS's announcing span of /172452       % AS's announcing span of /170.0332
    AS's announcing span of /183847       % AS's announcing span of /180.0520
    AS's announcing span of /195134       % AS's announcing span of /190.0695
    AS's announcing span of /207679       % AS's announcing span of /200.1039
    AS's announcing span of /2110420       % AS's announcing span of /210.1410
    AS's announcing span of /2212359       % AS's announcing span of /220.1672
    AS's announcing span of /238816       % AS's announcing span of /230.1193
    AS's announcing span of /2417663       % AS's announcing span of /240.2390
    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 /276       % AS's announcing span of /270.0001
    AS's announcing span of /283       % 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.

À‰—ëU À‰—ëU À‰—ëU
AS Connectivity ReportData
AS Adjacency Count174046
Average AS Connectivity Degree (348092/74767)4.6557
Average AS Connectivity IN:OUT Degree0.2675
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 Path541518Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path520620Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin357648Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation357688Report (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 Tue Mar 7 04:40:00 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