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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Thu Aug 24 06:00:00 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)717543   Change in FIB Size-56   Change (%)-0.008
    All BGP entries (RIB)29987841
    RIB/FIB ratio (29987841/717543)41.7924
      Valid entries29987841
      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)2852823343
    Total address space advertised (prefix length)0.59025673
    Percentage of IPv4 space advertised (2852823343/4294967295)66.422470
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3976
    Average address span (as prefix size)20.0433
Average prefix length22.7186

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 aggregates398359       Specifics as % of FIB entries (398359/717543)55.5171
    Specifics as % of address span (1081792638/2852823343)37.9201    
    Specifics where AS prepended Path matches aggregate159715         AS-P_Path-Match % (159715/398359)40.09
    AS Path matches aggregate167502         AS-Path-Match % (167502/398359)42.0480
    AS Origin matches aggregate306112         AS-Origin-Match % (306112/398359)76.8432
    Root Prefixes319184
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0275254
      Root Prefixes with depth 134653
      Root Prefixes with depth 27215
      Root Prefixes with depth 31571
      Root Prefixes with depth 4381
      Root Prefixes with depth 574
      Root Prefixes with depth 627
      Root Prefixes with depth 78
      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 ASes58893       ASes visible in only one AS path36563
    Origin only ASes49550         Origin ASs announced via a single AS path35615
    Transit only ASes312       Originating AS ATOM count58581
    Mixed ASes9031         Originating AS ATOM compression0.0816
    Multi-Origin Prefixes7111    
    ASes originating a single prefix21971    
    Average entries per origin AS12.2487         Maximum entries for an origin AS (AS34984)2058
    Average address range span for an origin AS48698.7819         Maximum address range for an origin AS (AS4134)119595520

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 Paths3788202       Unique AS prepended Paths4037038
AS Paths used in FIB92882       AS Paths using prepending871027
    AS paths associated with a single FIB entry43313       AS Paths using private ASs1750
    Average AS path length3.7689         Maximum AS Path length16
    Average address weighted AS path length4.6593         Maximum prepended AS Path length58
    Average entries per AS Path0.1894       Average entries per FIB AS Path7.7253
    AS Paths per origin AS64.6661       FIB AS Paths per origin AS1.5855
      AS PATH ATOM compression0.1294    

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 /100.01
    Prefix count /11104       % Prefix /110.01
    Prefix count /12285       % Prefix /120.04
    Prefix count /13555       % Prefix /130.08
    Prefix count /141071       % Prefix /140.15
    Prefix count /151879       % Prefix /150.26
    Prefix count /1613568       % Prefix /161.89
    Prefix count /178050       % Prefix /171.12
    Prefix count /1814107       % Prefix /181.97
    Prefix count /1926074       % Prefix /193.63
    Prefix count /2040695       % Prefix /205.67
    Prefix count /2147152       % Prefix /216.57
    Prefix count /2286286       % Prefix /2212.03
    Prefix count /2372903       % Prefix /2310.16
    Prefix count /24394266       % Prefix /2454.95
    Prefix count /251613       % Prefix /250.22
    Prefix count /261471       % Prefix /260.21
    Prefix count /271330       % Prefix /270.19
    Prefix count /28949       % Prefix /280.13
    Prefix count /29877       % Prefix /290.12
    Prefix count /30444       % Prefix /300.06
    Prefix count /31173       % Prefix /310.02
    Prefix count /323627       % Prefix /320.51

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 /1197       % Prefix /110.03
    Prefix count /12256       % Prefix /120.08
    Prefix count /13448       % Prefix /130.14
    Prefix count /14908       % Prefix /140.28
    Prefix count /151481       % Prefix /150.46
    Prefix count /1610147       % Prefix /163.18
    Prefix count /174364       % Prefix /171.37
    Prefix count /187175       % Prefix /182.25
    Prefix count /1914974       % Prefix /194.69
    Prefix count /2018798       % Prefix /205.89
    Prefix count /2121037       % Prefix /216.59
    Prefix count /2243143       % Prefix /2213.52
    Prefix count /2326044       % Prefix /238.16
    Prefix count /24170037       % Prefix /2453.27
    Prefix count /2518       % Prefix /250.01
    Prefix count /2612       % Prefix /260.00
    Prefix count /2718       % Prefix /270.01
    Prefix count /286       % Prefix /280.00
    Prefix count /298       % Prefix /290.00
    Prefix count /3036       % Prefix /300.01
    Prefix count /3170       % Prefix /310.02
    Prefix count /3251       % 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 1321556271       % Addresses at AS distance 18.2
    Addresses at AS distance 22218271430       % Addresses at AS distance 256.4
    Addresses at AS distance 31095917705       % Addresses at AS distance 327.9
    Addresses at AS distance 4231182761       % Addresses at AS distance 45.9
    Addresses at AS distance 539525512       % Addresses at AS distance 51.0
    Addresses at AS distance 613682831       % Addresses at AS distance 60.3
    Addresses at AS distance 78624495       % Addresses at AS distance 70.2
    Addresses at AS distance 85809664       % Addresses at AS distance 80.1
    Addresses at AS distance 944288       % Addresses at AS distance 90.0
    Addresses at AS distance 100       % 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
    Addresses at AS distance 150       % 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 hops321556271       % Addresses reachable within 1 AS hops8
    Addresses reachable within 2 AS hops2539827701       % Addresses reachable within 2 AS hops64
    Addresses reachable within 3 AS hops3635745406       % Addresses reachable within 3 AS hops92
    Addresses reachable within 4 AS hops3866928167       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3906453679       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3920136510       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3928761005       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3934570669       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3934614957       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3934614957       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3934614957       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops3934615981       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3934615981       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops3934615981       % Addresses reachable within 14 AS hops100
    Addresses reachable within 15 AS hops3934615981       % 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 hops50       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17561       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops32920       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops6803       % ASes reachable at 4 AS hops11
    ASes reachable at 5 AS hops1189       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops206       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops87       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops60       % 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 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 hops62       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops17623       Cumulative % ASes by AS hops 229.9
    ASes reachable by 3 AS hops50543       Cumulative % ASes by AS hops 385.8
    ASes reachable by 4 AS hops57346       Cumulative % ASes by AS hops 497.4
    ASes reachable by 5 AS hops58535       Cumulative % ASes by AS hops 599.4
    ASes reachable by 6 AS hops58741       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops58828       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops58888       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops58891       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops58892       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops58893       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops58893       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops58893       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops58893       Cumulative % ASes by AS hops 14100.0
    ASes reachable by 15 AS hops58893       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 /728       % AS's announcing span of /70.0005
    AS's announcing span of /841       % 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 /10116       % 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 /12223       % AS's announcing span of /120.0038
    AS's announcing span of /13456       % AS's announcing span of /130.0078
    AS's announcing span of /14859       % AS's announcing span of /140.0147
    AS's announcing span of /151750       % AS's announcing span of /150.0300
    AS's announcing span of /161799       % AS's announcing span of /160.0309
    AS's announcing span of /172264       % AS's announcing span of /170.0388
    AS's announcing span of /183553       % AS's announcing span of /180.0610
    AS's announcing span of /194644       % AS's announcing span of /190.0797
    AS's announcing span of /206063       % AS's announcing span of /200.1040
    AS's announcing span of /217496       % AS's announcing span of /210.1286
    AS's announcing span of /229014       % AS's announcing span of /220.1546
    AS's announcing span of /236022       % AS's announcing span of /230.1033
    AS's announcing span of /2413630       % AS's announcing span of /240.2338
    AS's announcing span of /2522       % AS's announcing span of /250.0004
    AS's announcing span of /2616       % AS's announcing span of /260.0003
    AS's announcing span of /2711       % AS's announcing span of /270.0002
    AS's announcing span of /2814       % AS's announcing span of /280.0002
    AS's announcing span of /297       % 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 /322       % 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.

  
AS Connectivity ReportData
AS Adjacency Count145393
Average AS Connectivity Degree (290786/58893)4.9375
Average AS Connectivity IN:OUT Degree0.2914
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 Path396377Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path389762Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin262524Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation262568Report (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 Aug 24 06:00:00 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