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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Tue Feb 20 22:40:00 2018 (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)741524   Change in FIB Size-86   Change (%)-0.012
    All BGP entries (RIB)34210579
    RIB/FIB ratio (34210579/741524)46.1355
      Valid entries34210579
      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)2860219952
    Total address space advertised (prefix length)0.58652105
    Percentage of IPv4 space advertised (2860219952/4294967295)66.594685
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3857
    Average address span (as prefix size)20.0867
Average prefix length22.7488

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 aggregates409744       Specifics as % of FIB entries (409744/741524)55.2570
    Specifics as % of address span (1101116270/2860219952)38.4976    
    Specifics where AS prepended Path matches aggregate170775         AS-P_Path-Match % (170775/409744)41.68
    AS Path matches aggregate179742         AS-Path-Match % (179742/409744)43.8669
    AS Origin matches aggregate314912         AS-Origin-Match % (314912/409744)76.8558
    Root Prefixes331780
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0286031
      Root Prefixes with depth 136357
      Root Prefixes with depth 27470
      Root Prefixes with depth 31466
      Root Prefixes with depth 4345
      Root Prefixes with depth 576
      Root Prefixes with depth 625
      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 ASes60651       ASes visible in only one AS path37362
    Origin only ASes50983         Origin ASs announced via a single AS path36385
    Transit only ASes315       Originating AS ATOM count60336
    Mixed ASes9353         Originating AS ATOM compression0.0814
    Multi-Origin Prefixes6676    
    ASes originating a single prefix22529    
    Average entries per origin AS12.2899         Maximum entries for an origin AS (AS393406)548
    Average address range span for an origin AS47404.8653         Maximum address range for an origin AS (AS4134)119416320

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 Paths4242628       Unique AS prepended Paths4517873
AS Paths used in FIB97655       AS Paths using prepending1076969
    AS paths associated with a single FIB entry46053       AS Paths using private ASs1733
    Average AS path length3.7633         Maximum AS Path length15
    Average address weighted AS path length4.6971         Maximum prepended AS Path length41
    Average entries per AS Path0.1748       Average entries per FIB AS Path7.5933
    AS Paths per origin AS70.3167       FIB AS Paths per origin AS1.6185
      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 /815       % Prefix /80.00
    Prefix count /912       % Prefix /90.00
    Prefix count /1037       % Prefix /100.00
    Prefix count /11100       % Prefix /110.01
    Prefix count /12292       % Prefix /120.04
    Prefix count /13564       % Prefix /130.08
    Prefix count /141109       % Prefix /140.15
    Prefix count /151940       % Prefix /150.26
    Prefix count /1613493       % Prefix /161.82
    Prefix count /178130       % Prefix /171.10
    Prefix count /1814115       % Prefix /181.90
    Prefix count /1926138       % Prefix /193.52
    Prefix count /2040376       % Prefix /205.45
    Prefix count /2148688       % Prefix /216.57
    Prefix count /2290685       % Prefix /2212.23
    Prefix count /2373902       % Prefix /239.97
    Prefix count /24410033       % Prefix /2455.30
    Prefix count /251772       % Prefix /250.24
    Prefix count /261552       % Prefix /260.21
    Prefix count /271333       % Prefix /270.18
    Prefix count /281021       % Prefix /280.14
    Prefix count /291687       % Prefix /290.23
    Prefix count /30638       % Prefix /300.09
    Prefix count /31586       % Prefix /310.08
    Prefix count /323306       % 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 /94       % Prefix /90.00
    Prefix count /1037       % Prefix /100.01
    Prefix count /1192       % Prefix /110.03
    Prefix count /12252       % Prefix /120.08
    Prefix count /13457       % Prefix /130.14
    Prefix count /14953       % Prefix /140.29
    Prefix count /151541       % Prefix /150.46
    Prefix count /1610003       % Prefix /163.01
    Prefix count /174399       % Prefix /171.33
    Prefix count /187338       % Prefix /182.21
    Prefix count /1915085       % Prefix /194.55
    Prefix count /2018737       % Prefix /205.65
    Prefix count /2121668       % Prefix /216.53
    Prefix count /2246290       % Prefix /2213.95
    Prefix count /2327208       % Prefix /238.20
    Prefix count /24176829       % Prefix /2453.30
    Prefix count /2525       % Prefix /250.01
    Prefix count /2618       % Prefix /260.01
    Prefix count /2720       % Prefix /270.01
    Prefix count /286       % Prefix /280.00
    Prefix count /297       % Prefix /290.00
    Prefix count /30111       % Prefix /300.03
    Prefix count /31175       % Prefix /310.05
    Prefix count /32510       % Prefix /320.15

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 1333376663       % Addresses at AS distance 18.4
    Addresses at AS distance 22173213654       % Addresses at AS distance 254.9
    Addresses at AS distance 31143146766       % Addresses at AS distance 328.9
    Addresses at AS distance 4243342999       % Addresses at AS distance 46.1
    Addresses at AS distance 540779897       % Addresses at AS distance 51.0
    Addresses at AS distance 612132262       % Addresses at AS distance 60.3
    Addresses at AS distance 79245293       % Addresses at AS distance 70.2
    Addresses at AS distance 85625344       % Addresses at AS distance 80.1
    Addresses at AS distance 9448512       % Addresses at AS distance 90.0
    Addresses at AS distance 105120       % Addresses at AS distance 100.0
    Addresses at AS distance 1119712       % 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
     
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 hops333376663       % Addresses reachable within 1 AS hops8
    Addresses reachable within 2 AS hops2506590317       % Addresses reachable within 2 AS hops63
    Addresses reachable within 3 AS hops3649737083       % Addresses reachable within 3 AS hops92
    Addresses reachable within 4 AS hops3893080082       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3933859979       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3945992241       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3955237534       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3960862878       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3961311390       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3961316510       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3961336222       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops3961336222       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3961336222       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops3961336222       % Addresses reachable within 14 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops11       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops52       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops18091       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops33637       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops7232       % ASes reachable at 4 AS hops11
    ASes reachable at 5 AS hops1278       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops207       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops73       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops62       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops7       % 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
     
Cumulative ASes by AS hops(data)   Cumulative % ASes by AS hops(data)
    ASes reachable by 0 AS hops11       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 hops18154       Cumulative % ASes by AS hops 229.9
    ASes reachable by 3 AS hops51791       Cumulative % ASes by AS hops 385.4
    ASes reachable by 4 AS hops59023       Cumulative % ASes by AS hops 497.3
    ASes reachable by 5 AS hops60301       Cumulative % ASes by AS hops 599.4
    ASes reachable by 6 AS hops60508       Cumulative % ASes by AS hops 699.8
    ASes reachable by 7 AS hops60581       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops60643       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops60650       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops60650       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops60651       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops60651       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops60651       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops60651       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 /68       % 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 /841       % AS's announcing span of /80.0007
    AS's announcing span of /974       % AS's announcing span of /90.0012
    AS's announcing span of /10113       % AS's announcing span of /100.0019
    AS's announcing span of /11175       % AS's announcing span of /110.0029
    AS's announcing span of /12220       % AS's announcing span of /120.0037
    AS's announcing span of /13455       % AS's announcing span of /130.0076
    AS's announcing span of /14859       % AS's announcing span of /140.0143
    AS's announcing span of /151746       % AS's announcing span of /150.0291
    AS's announcing span of /161808       % AS's announcing span of /160.0301
    AS's announcing span of /172273       % AS's announcing span of /170.0379
    AS's announcing span of /183592       % AS's announcing span of /180.0599
    AS's announcing span of /194735       % AS's announcing span of /190.0789
    AS's announcing span of /206158       % AS's announcing span of /200.1026
    AS's announcing span of /217950       % AS's announcing span of /210.1325
    AS's announcing span of /229543       % AS's announcing span of /220.1590
    AS's announcing span of /236121       % AS's announcing span of /230.1020
    AS's announcing span of /2414024       % AS's announcing span of /240.2337
    AS's announcing span of /2519       % AS's announcing span of /250.0003
    AS's announcing span of /2617       % AS's announcing span of /260.0003
    AS's announcing span of /2713       % AS's announcing span of /270.0002
    AS's announcing span of /2817       % AS's announcing span of /280.0003
    AS's announcing span of /2911       % AS's announcing span of /290.0002
    AS's announcing span of /301       % 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 /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.

  
AS Connectivity ReportData
AS Adjacency Count150204
Average AS Connectivity Degree (300408/60651)4.9531
Average AS Connectivity IN:OUT Degree0.2974
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 Path406328Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path398560Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin272205Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation272228Report (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 Tue Feb 20 22:40:00 2018 (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