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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Wed Jul 6 10:40:00 2022 (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)946209   Change in FIB Size22   Change (%)0.002
    All BGP entries (RIB)30592503
    RIB/FIB ratio (30592503/946209)32.3317
      Valid entries30592503
      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)3070916122
    Total address space advertised (prefix length)0.48397804
    Percentage of IPv4 space advertised (3070916122/4294967295)71.500338
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3245
    Average address span (as prefix size)20.3360
Average prefix length22.8578

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 aggregates510949       Specifics as % of FIB entries (510949/946209)53.9996
    Specifics as % of address span (1162678042/3070916122)37.8610    
    Specifics where AS prepended Path matches aggregate233356         AS-P_Path-Match % (233356/510949)45.67
    AS Path matches aggregate251595         AS-Path-Match % (251595/510949)49.2407
    AS Origin matches aggregate396639         AS-Origin-Match % (396639/510949)77.6279
    Root Prefixes435260
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0378183
      Root Prefixes with depth 145510
      Root Prefixes with depth 29345
      Root Prefixes with depth 31644
      Root Prefixes with depth 4451
      Root Prefixes with depth 590
      Root Prefixes with depth 627
      Root Prefixes with depth 79
      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 ASes74094       ASes visible in only one AS path45366
    Origin only ASes62199         Origin ASs announced via a single AS path44328
    Transit only ASes486       Originating AS ATOM count73608
    Mixed ASes11409         Originating AS ATOM compression0.0778
    Multi-Origin Prefixes12142    
    ASes originating a single prefix25556    
    Average entries per origin AS12.8547         Maximum entries for an origin AS (AS9009)2579
    Average address range span for an origin AS41719.8691         Maximum address range for an origin AS (AS749)211397632

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 Paths3614080       Unique AS prepended Paths3884346
AS Paths used in FIB117469       AS Paths using prepending1019289
    AS paths associated with a single FIB entry53940       AS Paths using private ASs448
    Average AS path length6.0671       Number of Prefixes with Selected AS Prepending Paths174486
      Maximum AS Path length14       Number of Prefixes with AS Prepending Paths174486
    Average address weighted AS path length7.5949         Maximum prepended AS Path length167
    Average entries per AS Path0.2618       Average entries per FIB AS Path8.0550
    AS Paths per origin AS49.0990       FIB AS Paths per origin AS1.5959
      AS PATH ATOM compression0.1241    

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 /816       % Prefix /80.00
    Prefix count /913       % Prefix /90.00
    Prefix count /1041       % Prefix /100.00
    Prefix count /11102       % Prefix /110.01
    Prefix count /12308       % Prefix /120.03
    Prefix count /13594       % Prefix /130.06
    Prefix count /141220       % Prefix /140.13
    Prefix count /152135       % Prefix /150.23
    Prefix count /1613705       % Prefix /161.45
    Prefix count /178549       % Prefix /170.90
    Prefix count /1814385       % Prefix /181.52
    Prefix count /1926182       % Prefix /192.77
    Prefix count /2045616       % Prefix /204.82
    Prefix count /2153878       % Prefix /215.69
    Prefix count /22111624       % Prefix /2211.80
    Prefix count /23103531       % Prefix /2310.94
    Prefix count /24558265       % Prefix /2459.00
    Prefix count /251249       % Prefix /250.13
    Prefix count /261249       % Prefix /260.13
    Prefix count /271754       % Prefix /270.19
    Prefix count /28285       % Prefix /280.03
    Prefix count /29305       % Prefix /290.03
    Prefix count /30107       % Prefix /300.01
    Prefix count /31232       % Prefix /310.02
    Prefix count /32864       % 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 /816       % Prefix /80.00
    Prefix count /99       % Prefix /90.00
    Prefix count /1041       % Prefix /100.01
    Prefix count /1196       % Prefix /110.02
    Prefix count /12269       % Prefix /120.06
    Prefix count /13491       % Prefix /130.11
    Prefix count /141024       % Prefix /140.24
    Prefix count /151627       % Prefix /150.37
    Prefix count /1610321       % Prefix /162.37
    Prefix count /174481       % Prefix /171.03
    Prefix count /186889       % Prefix /181.58
    Prefix count /1915105       % Prefix /193.47
    Prefix count /2019463       % Prefix /204.47
    Prefix count /2122872       % Prefix /215.25
    Prefix count /2259066       % Prefix /2213.57
    Prefix count /2341003       % Prefix /239.42
    Prefix count /24252444       % Prefix /2458.00
    Prefix count /2519       % Prefix /250.00
    Prefix count /264       % Prefix /260.00
    Prefix count /2711       % Prefix /270.00
    Prefix count /283       % Prefix /280.00
    Prefix count /290       % Prefix /290.00
    Prefix count /300       % 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 1241701456       % Addresses at AS distance 15.7
    Addresses at AS distance 242627884       % Addresses at AS distance 21.0
    Addresses at AS distance 3234613012       % Addresses at AS distance 35.5
    Addresses at AS distance 41373828952       % Addresses at AS distance 432.5
    Addresses at AS distance 51607912812       % Addresses at AS distance 538.0
    Addresses at AS distance 6631930272       % Addresses at AS distance 614.9
    Addresses at AS distance 780690432       % Addresses at AS distance 71.9
    Addresses at AS distance 815176256       % Addresses at AS distance 80.4
    Addresses at AS distance 94890624       % Addresses at AS distance 90.1
    Addresses at AS distance 10212480       % Addresses at AS distance 100.0
    Addresses at AS distance 119472       % 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 hops241701456       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops284329340       % Addresses reachable within 2 AS hops6
    Addresses reachable within 3 AS hops518942352       % Addresses reachable within 3 AS hops12
    Addresses reachable within 4 AS hops1892771304       % Addresses reachable within 4 AS hops44
    Addresses reachable within 5 AS hops3500684116       % Addresses reachable within 5 AS hops82
    Addresses reachable within 6 AS hops4132614388       % Addresses reachable within 6 AS hops97
    Addresses reachable within 7 AS hops4213304820       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4228481076       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4233371700       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4233584180       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4233593652       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4233594164       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops4233594164       % 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 hops37       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17531       % ASes reachable at 2 AS hops23
    ASes reachable at 3 AS hops43249       % ASes reachable at 3 AS hops58
    ASes reachable at 4 AS hops10668       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1952       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops434       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops140       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops79       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops3       % 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 hops38       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops17569       Cumulative % ASes by AS hops 223.7
    ASes reachable by 3 AS hops60818       Cumulative % ASes by AS hops 382.1
    ASes reachable by 4 AS hops71486       Cumulative % ASes by AS hops 496.5
    ASes reachable by 5 AS hops73438       Cumulative % ASes by AS hops 599.1
    ASes reachable by 6 AS hops73872       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops74012       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops74091       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops74094       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops74094       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops74094       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops74094       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops74094       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 /611       % AS's announcing span of /60.0002
    AS's announcing span of /726       % AS's announcing span of /70.0004
    AS's announcing span of /841       % AS's announcing span of /80.0006
    AS's announcing span of /975       % AS's announcing span of /90.0010
    AS's announcing span of /10109       % AS's announcing span of /100.0015
    AS's announcing span of /11172       % AS's announcing span of /110.0023
    AS's announcing span of /12241       % AS's announcing span of /120.0033
    AS's announcing span of /13436       % AS's announcing span of /130.0059
    AS's announcing span of /14847       % AS's announcing span of /140.0116
    AS's announcing span of /151722       % AS's announcing span of /150.0235
    AS's announcing span of /161859       % AS's announcing span of /160.0254
    AS's announcing span of /172497       % AS's announcing span of /170.0341
    AS's announcing span of /183849       % AS's announcing span of /180.0525
    AS's announcing span of /195117       % AS's announcing span of /190.0698
    AS's announcing span of /207642       % AS's announcing span of /200.1043
    AS's announcing span of /2110403       % AS's announcing span of /210.1419
    AS's announcing span of /2212361       % AS's announcing span of /220.1687
    AS's announcing span of /238493       % AS's announcing span of /230.1159
    AS's announcing span of /2417310       % AS's announcing span of /240.2362
    AS's announcing span of /2516       % AS's announcing span of /250.0002
    AS's announcing span of /2610       % AS's announcing span of /260.0001
    AS's announcing span of /2712       % AS's announcing span of /270.0002
    AS's announcing span of /2819       % AS's announcing span of /280.0003
    AS's announcing span of /2910       % AS's announcing span of /290.0001
    AS's announcing span of /301       % 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 /325       % 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.

°Ăi °Ăi °Ăi
AS Connectivity ReportData
AS Adjacency Count178275
Average AS Connectivity Degree (356550/74094)4.8121
Average AS Connectivity IN:OUT Degree0.2816
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 Path512763Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path493558Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin348190Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation348244Report (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 Jul 6 10:40:00 2022 (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