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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Sat Oct 21 02:20:00 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)726347   Change in FIB Size58   Change (%)0.008
    All BGP entries (RIB)33370542
    RIB/FIB ratio (33370542/726347)45.9430
      Valid entries33370542
      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)2860024073
    Total address space advertised (prefix length)0.58661986
    Percentage of IPv4 space advertised (2860024073/4294967295)66.590125
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3938
    Average address span (as prefix size)20.0571
Average prefix length22.7267

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 aggregates404343       Specifics as % of FIB entries (404343/726347)55.6680
    Specifics as % of address span (1088426290/2860024073)38.0565    
    Specifics where AS prepended Path matches aggregate168050         AS-P_Path-Match % (168050/404343)41.56
    AS Path matches aggregate176124         AS-Path-Match % (176124/404343)43.5581
    AS Origin matches aggregate311215         AS-Origin-Match % (311215/404343)76.9681
    Root Prefixes322004
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0277360
      Root Prefixes with depth 135202
      Root Prefixes with depth 27422
      Root Prefixes with depth 31545
      Root Prefixes with depth 4363
      Root Prefixes with depth 576
      Root Prefixes with depth 626
      Root Prefixes with depth 710

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 ASes59503       ASes visible in only one AS path36792
    Origin only ASes50010         Origin ASs announced via a single AS path35827
    Transit only ASes317       Originating AS ATOM count59186
    Mixed ASes9176         Originating AS ATOM compression0.0815
    Multi-Origin Prefixes7950    
    ASes originating a single prefix22110    
    Average entries per origin AS12.2723         Maximum entries for an origin AS (AS62567)327
    Average address range span for an origin AS48322.6451         Maximum address range for an origin AS (AS4134)119656192

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 Paths4175443       Unique AS prepended Paths4448301
AS Paths used in FIB93437       AS Paths using prepending1012409
    AS paths associated with a single FIB entry44091       AS Paths using private ASs2068
    Average AS path length3.7713         Maximum AS Path length16
    Average address weighted AS path length4.6965         Maximum prepended AS Path length52
    Average entries per AS Path0.1740       Average entries per FIB AS Path7.7737
    AS Paths per origin AS70.5478       FIB AS Paths per origin AS1.5787
      AS PATH ATOM compression0.1286    

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 /815       % Prefix /80.00
    Prefix count /913       % Prefix /90.00
    Prefix count /1036       % Prefix /100.00
    Prefix count /11106       % Prefix /110.01
    Prefix count /12287       % Prefix /120.04
    Prefix count /13557       % Prefix /130.08
    Prefix count /141070       % Prefix /140.15
    Prefix count /151907       % Prefix /150.26
    Prefix count /1613558       % Prefix /161.87
    Prefix count /178056       % Prefix /171.11
    Prefix count /1814127       % Prefix /181.94
    Prefix count /1926028       % Prefix /193.58
    Prefix count /2040484       % Prefix /205.57
    Prefix count /2147396       % Prefix /216.53
    Prefix count /2288238       % Prefix /2212.15
    Prefix count /2373934       % Prefix /2310.18
    Prefix count /24399795       % Prefix /2455.04
    Prefix count /251650       % Prefix /250.23
    Prefix count /261554       % Prefix /260.21
    Prefix count /271419       % Prefix /270.20
    Prefix count /281137       % Prefix /280.16
    Prefix count /29998       % Prefix /290.14
    Prefix count /30468       % Prefix /300.06
    Prefix count /31273       % Prefix /310.04
    Prefix count /323241       % Prefix /320.45

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 /815       % Prefix /80.00
    Prefix count /95       % Prefix /90.00
    Prefix count /1036       % Prefix /100.01
    Prefix count /1199       % Prefix /110.03
    Prefix count /12258       % Prefix /120.08
    Prefix count /13449       % Prefix /130.14
    Prefix count /14912       % Prefix /140.28
    Prefix count /151499       % Prefix /150.47
    Prefix count /1610084       % Prefix /163.13
    Prefix count /174350       % Prefix /171.35
    Prefix count /187187       % Prefix /182.23
    Prefix count /1914998       % Prefix /194.66
    Prefix count /2018718       % Prefix /205.81
    Prefix count /2121136       % Prefix /216.56
    Prefix count /2243951       % Prefix /2213.65
    Prefix count /2326331       % Prefix /238.18
    Prefix count /24171290       % Prefix /2453.19
    Prefix count /2522       % Prefix /250.01
    Prefix count /2612       % Prefix /260.00
    Prefix count /2722       % Prefix /270.01
    Prefix count /287       % Prefix /280.00
    Prefix count /2911       % Prefix /290.00
    Prefix count /3039       % Prefix /300.01
    Prefix count /31168       % Prefix /310.05
    Prefix count /32405       % Prefix /320.13

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 1314980194       % Addresses at AS distance 18.0
    Addresses at AS distance 22172225018       % Addresses at AS distance 255.0
    Addresses at AS distance 31141043196       % Addresses at AS distance 328.9
    Addresses at AS distance 4249821927       % Addresses at AS distance 46.3
    Addresses at AS distance 541788682       % Addresses at AS distance 51.1
    Addresses at AS distance 613372082       % Addresses at AS distance 60.3
    Addresses at AS distance 79037632       % Addresses at AS distance 70.2
    Addresses at AS distance 86131456       % Addresses at AS distance 80.2
    Addresses at AS distance 947104       % Addresses at AS distance 90.0
    Addresses at AS distance 102816       % Addresses at AS distance 100.0
    Addresses at AS distance 110       % Addresses at AS distance 110.0
    Addresses at AS distance 120       % 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 15256       % 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 hops314980194       % Addresses reachable within 1 AS hops7
    Addresses reachable within 2 AS hops2487205212       % Addresses reachable within 2 AS hops62
    Addresses reachable within 3 AS hops3628248408       % Addresses reachable within 3 AS hops91
    Addresses reachable within 4 AS hops3878070335       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3919859017       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3933231099       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3942268731       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3948400187       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3948447291       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3948450107       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3948450107       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops3948450107       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops3948450107       % Addresses reachable within 13 AS hops99
    Addresses reachable within 14 AS hops3948450107       % Addresses reachable within 14 AS hops99
    Addresses reachable within 15 AS hops3948450363       % Addresses reachable within 15 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops12       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops52       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17829       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops32944       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops7128       % ASes reachable at 4 AS hops11
    ASes reachable at 5 AS hops1170       % ASes reachable at 5 AS hops1
    ASes reachable at 6 AS hops208       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops92       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops65       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops2       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops0       % ASes reachable at 10 AS hops0
    ASes reachable at 11 AS hops1       % 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 hops12       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops64       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops17893       Cumulative % ASes by AS hops 230.1
    ASes reachable by 3 AS hops50837       Cumulative % ASes by AS hops 385.4
    ASes reachable by 4 AS hops57965       Cumulative % ASes by AS hops 497.4
    ASes reachable by 5 AS hops59135       Cumulative % ASes by AS hops 599.4
    ASes reachable by 6 AS hops59343       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops59435       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops59500       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops59502       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops59502       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops59503       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops59503       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops59503       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops59503       Cumulative % ASes by AS hops 14100.0
    ASes reachable by 15 AS hops59503       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 /57       % AS's announcing span of /50.0001
    AS's announcing span of /68       % AS's announcing span of /60.0001
    AS's announcing span of /729       % AS's announcing span of /70.0005
    AS's announcing span of /840       % AS's announcing span of /80.0007
    AS's announcing span of /971       % AS's announcing span of /90.0012
    AS's announcing span of /10115       % AS's announcing span of /100.0020
    AS's announcing span of /11170       % AS's announcing span of /110.0029
    AS's announcing span of /12221       % AS's announcing span of /120.0038
    AS's announcing span of /13462       % AS's announcing span of /130.0078
    AS's announcing span of /14862       % AS's announcing span of /140.0146
    AS's announcing span of /151735       % AS's announcing span of /150.0295
    AS's announcing span of /161813       % AS's announcing span of /160.0308
    AS's announcing span of /172273       % AS's announcing span of /170.0386
    AS's announcing span of /183582       % AS's announcing span of /180.0608
    AS's announcing span of /194671       % AS's announcing span of /190.0793
    AS's announcing span of /206058       % AS's announcing span of /200.1029
    AS's announcing span of /217713       % AS's announcing span of /210.1310
    AS's announcing span of /229172       % AS's announcing span of /220.1558
    AS's announcing span of /236059       % AS's announcing span of /230.1029
    AS's announcing span of /2413732       % AS's announcing span of /240.2333
    AS's announcing span of /2523       % AS's announcing span of /250.0004
    AS's announcing span of /2617       % AS's announcing span of /260.0003
    AS's announcing span of /2710       % AS's announcing span of /270.0002
    AS's announcing span of /2815       % AS's announcing span of /280.0003
    AS's announcing span of /298       % 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 /312       % AS's announcing span of /310.0000
    AS's announcing span of /323       % 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.

  
AS Connectivity ReportData
AS Adjacency Count148773
Average AS Connectivity Degree (297546/59503)5.0005
Average AS Connectivity IN:OUT Degree0.3003
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 Path392224Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path384663Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin265894Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation265913Report (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 Sat Oct 21 02:20:00 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