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   AS6447 BGP Routing Table Analysis Report
   
  BGP data obtained from AS6447
Report last updated at Thu Nov 24 18:00:00 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)963968   Change in FIB Size-35   Change (%)-0.004
    All BGP entries (RIB)28389800
    RIB/FIB ratio (28389800/963968)29.4510
      Valid entries28389800
      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)3068165446
    Total address space advertised (prefix length)0.48527087
    Percentage of IPv4 space advertised (3068165446/4294967295)71.436294
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3183
    Average address span (as prefix size)20.3643
Average prefix length22.8659

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 aggregates522089       Specifics as % of FIB entries (522089/963968)54.1604
    Specifics as % of address span (1170936021/3068165446)38.1640    
    Specifics where AS prepended Path matches aggregate214452         AS-P_Path-Match % (214452/522089)41.08
    AS Path matches aggregate227233         AS-Path-Match % (227233/522089)43.5238
    AS Origin matches aggregate404061         AS-Origin-Match % (404061/522089)77.3931
    Root Prefixes441879
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0384366
      Root Prefixes with depth 145753
      Root Prefixes with depth 29467
      Root Prefixes with depth 31692
      Root Prefixes with depth 4459
      Root Prefixes with depth 596
      Root Prefixes with depth 634
      Root Prefixes with depth 711
      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 ASes74661       ASes visible in only one AS path44276
    Origin only ASes62721         Origin ASs announced via a single AS path43365
    Transit only ASes536       Originating AS ATOM count74125
    Mixed ASes11404         Originating AS ATOM compression0.0769
    Multi-Origin Prefixes11964    
    ASes originating a single prefix25562    
    Average entries per origin AS13.0046         Maximum entries for an origin AS (AS327687)172
    Average address range span for an origin AS41391.7767         Maximum address range for an origin AS (AS749)211072768

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 Paths3321190       Unique AS prepended Paths3572969
AS Paths used in FIB126998       AS Paths using prepending939952
    AS paths associated with a single FIB entry60226       AS Paths using private ASs411
    Average AS path length4.8017       Number of Prefixes with Selected AS Prepending Paths175721
      Maximum AS Path length15       Number of Prefixes with AS Prepending Paths175721
    Average address weighted AS path length6.2450         Maximum prepended AS Path length167
    Average entries per AS Path0.2902       Average entries per FIB AS Path7.5904
    AS Paths per origin AS44.8053       FIB AS Paths per origin AS1.7133
      AS PATH ATOM compression0.1317    

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 /11102       % Prefix /110.01
    Prefix count /12300       % Prefix /120.03
    Prefix count /13589       % Prefix /130.06
    Prefix count /141211       % Prefix /140.13
    Prefix count /152127       % Prefix /150.22
    Prefix count /1613710       % Prefix /161.42
    Prefix count /178585       % Prefix /170.89
    Prefix count /1814405       % Prefix /181.49
    Prefix count /1926269       % Prefix /192.73
    Prefix count /2045844       % Prefix /204.76
    Prefix count /2154622       % Prefix /215.67
    Prefix count /22113789       % Prefix /2211.80
    Prefix count /23105484       % Prefix /2310.94
    Prefix count /24571245       % Prefix /2459.26
    Prefix count /251213       % Prefix /250.13
    Prefix count /261219       % Prefix /260.13
    Prefix count /271764       % Prefix /270.18
    Prefix count /28171       % Prefix /280.02
    Prefix count /29283       % Prefix /290.03
    Prefix count /3076       % Prefix /300.01
    Prefix count /31296       % Prefix /310.03
    Prefix count /32595       % Prefix /320.06

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 /1196       % Prefix /110.02
    Prefix count /12264       % Prefix /120.06
    Prefix count /13487       % Prefix /130.11
    Prefix count /141013       % Prefix /140.23
    Prefix count /151640       % Prefix /150.37
    Prefix count /1610257       % Prefix /162.32
    Prefix count /174474       % Prefix /171.01
    Prefix count /186920       % Prefix /181.57
    Prefix count /1915037       % Prefix /193.40
    Prefix count /2019405       % Prefix /204.39
    Prefix count /2122823       % Prefix /215.16
    Prefix count /2259553       % Prefix /2213.48
    Prefix count /2341250       % Prefix /239.34
    Prefix count /24258569       % Prefix /2458.52
    Prefix count /254       % Prefix /250.00
    Prefix count /264       % Prefix /260.00
    Prefix count /279       % 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 1225411285       % Addresses at AS distance 15.3
    Addresses at AS distance 2320081920       % Addresses at AS distance 27.6
    Addresses at AS distance 31527478234       % Addresses at AS distance 336.0
    Addresses at AS distance 41548842263       % Addresses at AS distance 436.5
    Addresses at AS distance 5506253205       % Addresses at AS distance 511.9
    Addresses at AS distance 662444128       % Addresses at AS distance 61.5
    Addresses at AS distance 724441600       % Addresses at AS distance 70.6
    Addresses at AS distance 816834144       % Addresses at AS distance 80.4
    Addresses at AS distance 96734848       % Addresses at AS distance 90.2
    Addresses at AS distance 10555264       % Addresses at AS distance 100.0
    Addresses at AS distance 1120992       % Addresses at AS distance 110.0
    Addresses at AS distance 122816       % Addresses at AS distance 120.0
    Addresses at AS distance 130       % Addresses at AS distance 130.0
    Addresses at AS distance 14768       % Addresses at AS distance 140.0
     
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 hops225411285       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops545493205       % Addresses reachable within 2 AS hops12
    Addresses reachable within 3 AS hops2072971439       % Addresses reachable within 3 AS hops48
    Addresses reachable within 4 AS hops3621813702       % Addresses reachable within 4 AS hops85
    Addresses reachable within 5 AS hops4128066907       % Addresses reachable within 5 AS hops97
    Addresses reachable within 6 AS hops4190511035       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops4214952635       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4231786779       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4238521627       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4239076891       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4239097883       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4239100699       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops4239100699       % Addresses reachable within 13 AS hops99
    Addresses reachable within 14 AS hops4239101467       % Addresses reachable within 14 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 hops35       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17460       % ASes reachable at 2 AS hops23
    ASes reachable at 3 AS hops43479       % ASes reachable at 3 AS hops58
    ASes reachable at 4 AS hops10932       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1991       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops505       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops146       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops79       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops22       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops6       % ASes reachable at 10 AS hops0
    ASes reachable at 11 AS hops5       % 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
     
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 hops36       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops17496       Cumulative % ASes by AS hops 223.4
    ASes reachable by 3 AS hops60975       Cumulative % ASes by AS hops 381.7
    ASes reachable by 4 AS hops71907       Cumulative % ASes by AS hops 496.3
    ASes reachable by 5 AS hops73898       Cumulative % ASes by AS hops 599.0
    ASes reachable by 6 AS hops74403       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops74549       Cumulative % ASes by AS hops 799.8
    ASes reachable by 8 AS hops74628       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops74650       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops74656       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops74661       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops74661       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops74661       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops74661       Cumulative % ASes by AS hops 14100.0

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 /727       % 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 /980       % 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 /11169       % 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 /13422       % AS's announcing span of /130.0057
    AS's announcing span of /14838       % AS's announcing span of /140.0114
    AS's announcing span of /151738       % AS's announcing span of /150.0236
    AS's announcing span of /161864       % AS's announcing span of /160.0253
    AS's announcing span of /172477       % AS's announcing span of /170.0336
    AS's announcing span of /183830       % AS's announcing span of /180.0520
    AS's announcing span of /195142       % AS's announcing span of /190.0698
    AS's announcing span of /207812       % AS's announcing span of /200.1060
    AS's announcing span of /2110401       % AS's announcing span of /210.1412
    AS's announcing span of /2212303       % AS's announcing span of /220.1670
    AS's announcing span of /238701       % AS's announcing span of /230.1181
    AS's announcing span of /2417440       % AS's announcing span of /240.2367
    AS's announcing span of /2512       % AS's announcing span of /250.0002
    AS's announcing span of /269       % AS's announcing span of /260.0001
    AS's announcing span of /279       % 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.

øÆi ïÑÿÿÿ ïÑÿÿÿ
AS Connectivity ReportData
AS Adjacency Count175629
Average AS Connectivity Degree (351258/74661)4.7047
Average AS Connectivity IN:OUT Degree0.2736
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 Path543961Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path527208Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin354060Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation354114Report (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 Nov 24 18:00:00 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