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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Wed Mar 22 22:40:00 2017 (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)695386   Change in FIB Size-23   Change (%)-0.003
    All BGP entries (RIB)29778369
    RIB/FIB ratio (29778369/695386)42.8228
      Valid entries29778369
      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)2840044683
    Total address space advertised (prefix length)0.59673352
    Percentage of IPv4 space advertised (2840044683/4294967295)66.124943
    Total address space advertised - corrected to 19 /8s(data)
Average address span 4084
    Average address span (as prefix size)20.0042
Average prefix length22.7152

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 aggregates386107       Specifics as % of FIB entries (386107/695386)55.5241
    Specifics as % of address span (1066572650/2840044683)37.5548    
    Specifics where AS prepended Path matches aggregate163384         AS-P_Path-Match % (163384/386107)42.32
    AS Path matches aggregate169817         AS-Path-Match % (169817/386107)43.9818
    AS Origin matches aggregate293510         AS-Origin-Match % (293510/386107)76.0178
    Root Prefixes309279
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0266914
      Root Prefixes with depth 133530
      Root Prefixes with depth 26852
      Root Prefixes with depth 31529
      Root Prefixes with depth 4345
      Root Prefixes with depth 570
      Root Prefixes with depth 629
      Root Prefixes with depth 78
      Root Prefixes with depth 81
      Root Prefixes with depth 91

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 ASes57316       ASes visible in only one AS path35844
    Origin only ASes48287         Origin ASs announced via a single AS path34869
    Transit only ASes278       Originating AS ATOM count57038
    Mixed ASes8751         Originating AS ATOM compression0.0820
    Multi-Origin Prefixes6967    
    ASes originating a single prefix21553    
    Average entries per origin AS12.1916         Maximum entries for an origin AS (AS58640)293
    Average address range span for an origin AS49792.1505         Maximum address range for an origin AS (AS4134)120809728

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 Paths3770390       Unique AS prepended Paths4014438
AS Paths used in FIB90466       AS Paths using prepending868701
    AS paths associated with a single FIB entry42744       AS Paths using private ASs2236
    Average AS path length3.7636         Maximum AS Path length15
    Average address weighted AS path length4.6485         Maximum prepended AS Path length55
    Average entries per AS Path0.1844       Average entries per FIB AS Path7.6867
    AS Paths per origin AS66.1031       FIB AS Paths per origin AS1.5861
      AS PATH ATOM compression0.1301    

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 /1036       % Prefix /100.01
    Prefix count /11103       % Prefix /110.01
    Prefix count /12283       % Prefix /120.04
    Prefix count /13537       % Prefix /130.08
    Prefix count /141064       % Prefix /140.15
    Prefix count /151834       % Prefix /150.26
    Prefix count /1613370       % Prefix /161.92
    Prefix count /178175       % Prefix /171.18
    Prefix count /1813967       % Prefix /182.01
    Prefix count /1926001       % Prefix /193.74
    Prefix count /2040516       % Prefix /205.83
    Prefix count /2146305       % Prefix /216.66
    Prefix count /2282815       % Prefix /2211.91
    Prefix count /2369428       % Prefix /239.98
    Prefix count /24379510       % Prefix /2454.58
    Prefix count /251323       % Prefix /250.19
    Prefix count /261225       % Prefix /260.18
    Prefix count /27881       % Prefix /270.13
    Prefix count /28806       % Prefix /280.12
    Prefix count /291623       % Prefix /290.23
    Prefix count /30563       % Prefix /300.08
    Prefix count /311713       % Prefix /310.25
    Prefix count /323279       % Prefix /320.47

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 /80.01
    Prefix count /95       % Prefix /90.00
    Prefix count /1036       % Prefix /100.01
    Prefix count /1196       % Prefix /110.03
    Prefix count /12254       % Prefix /120.08
    Prefix count /13440       % Prefix /130.14
    Prefix count /14907       % Prefix /140.29
    Prefix count /151469       % Prefix /150.47
    Prefix count /169957       % Prefix /163.22
    Prefix count /174329       % Prefix /171.40
    Prefix count /187147       % Prefix /182.31
    Prefix count /1914888       % Prefix /194.81
    Prefix count /2018594       % Prefix /206.01
    Prefix count /2121103       % Prefix /216.82
    Prefix count /2241495       % Prefix /2213.42
    Prefix count /2325200       % Prefix /238.15
    Prefix count /24163202       % Prefix /2452.77
    Prefix count /2518       % Prefix /250.01
    Prefix count /2610       % Prefix /260.00
    Prefix count /2714       % Prefix /270.00
    Prefix count /285       % Prefix /280.00
    Prefix count /296       % Prefix /290.00
    Prefix count /3037       % Prefix /300.01
    Prefix count /314       % Prefix /310.00
    Prefix count /3247       % Prefix /320.02

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 1321868406       % Addresses at AS distance 18.2
    Addresses at AS distance 22183539408       % Addresses at AS distance 255.9
    Addresses at AS distance 31113373568       % Addresses at AS distance 328.5
    Addresses at AS distance 4216761604       % Addresses at AS distance 45.5
    Addresses at AS distance 544309757       % Addresses at AS distance 51.1
    Addresses at AS distance 614442104       % Addresses at AS distance 60.4
    Addresses at AS distance 77479962       % Addresses at AS distance 70.2
    Addresses at AS distance 84833564       % Addresses at AS distance 80.1
    Addresses at AS distance 97424       % Addresses at AS distance 90.0
    Addresses at AS distance 10512       % Addresses at AS distance 100.0
    Addresses at AS distance 110       % Addresses at AS distance 110.0
    Addresses at AS distance 121024       % 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
     
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 hops321868406       % Addresses reachable within 1 AS hops8
    Addresses reachable within 2 AS hops2505407814       % Addresses reachable within 2 AS hops64
    Addresses reachable within 3 AS hops3618781382       % Addresses reachable within 3 AS hops92
    Addresses reachable within 4 AS hops3835542986       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3879852743       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3894294847       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3901774809       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3906608373       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3906615797       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3906616309       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3906616309       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops3906617333       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3906617333       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops3906617333       % Addresses reachable within 14 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops13       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops50       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17110       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops32169       % ASes reachable at 3 AS hops56
    ASes reachable at 4 AS hops6571       % ASes reachable at 4 AS hops11
    ASes reachable at 5 AS hops1096       % ASes reachable at 5 AS hops1
    ASes reachable at 6 AS hops205       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops58       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops43       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops1       % 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
     
Cumulative ASes by AS hops(data)   Cumulative % ASes by AS hops(data)
    ASes reachable by 0 AS hops13       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops63       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops17173       Cumulative % ASes by AS hops 230.0
    ASes reachable by 3 AS hops49342       Cumulative % ASes by AS hops 386.1
    ASes reachable by 4 AS hops55913       Cumulative % ASes by AS hops 497.6
    ASes reachable by 5 AS hops57009       Cumulative % ASes by AS hops 599.5
    ASes reachable by 6 AS hops57214       Cumulative % ASes by AS hops 699.8
    ASes reachable by 7 AS hops57272       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops57315       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops57316       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops57316       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops57316       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops57316       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops57316       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops57316       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 /57       % AS's announcing span of /50.0001
    AS's announcing span of /67       % AS's announcing span of /60.0001
    AS's announcing span of /730       % AS's announcing span of /70.0005
    AS's announcing span of /838       % AS's announcing span of /80.0007
    AS's announcing span of /974       % AS's announcing span of /90.0013
    AS's announcing span of /10112       % AS's announcing span of /100.0020
    AS's announcing span of /11172       % AS's announcing span of /110.0030
    AS's announcing span of /12220       % AS's announcing span of /120.0039
    AS's announcing span of /13459       % AS's announcing span of /130.0081
    AS's announcing span of /14834       % AS's announcing span of /140.0147
    AS's announcing span of /151746       % AS's announcing span of /150.0308
    AS's announcing span of /161795       % AS's announcing span of /160.0316
    AS's announcing span of /172240       % AS's announcing span of /170.0395
    AS's announcing span of /183523       % AS's announcing span of /180.0621
    AS's announcing span of /194586       % AS's announcing span of /190.0808
    AS's announcing span of /205887       % AS's announcing span of /200.1037
    AS's announcing span of /217172       % AS's announcing span of /210.1263
    AS's announcing span of /228574       % AS's announcing span of /220.1510
    AS's announcing span of /235873       % AS's announcing span of /230.1035
    AS's announcing span of /2413341       % AS's announcing span of /240.2350
    AS's announcing span of /2516       % AS's announcing span of /250.0003
    AS's announcing span of /269       % AS's announcing span of /260.0002
    AS's announcing span of /277       % AS's announcing span of /270.0001
    AS's announcing span of /2818       % AS's announcing span of /280.0003
    AS's announcing span of /295       % AS's announcing span of /290.0001
    AS's announcing span of /302       % 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 /3223       % AS's announcing span of /320.0004

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 Count142089
Average AS Connectivity Degree (284178/57316)4.9581
Average AS Connectivity IN:OUT Degree0.2899
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 Path378529Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path372366Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin257076Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation257198Report (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 Mar 22 22:40:00 2017 (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