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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Tue Dec 1 16:40:00 2020 (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)886102   Change in FIB Size2   Change (%)0.000
    All BGP entries (RIB)31577435
    RIB/FIB ratio (31577435/886102)35.6363
      Valid entries31577435
      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)2868415096
    Total address space advertised (prefix length)0.58239333
    Percentage of IPv4 space advertised (2868415096/4294967295)66.785493
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3237
    Average address span (as prefix size)20.3396
Average prefix length22.8359

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 aggregates488784       Specifics as % of FIB entries (488784/886102)55.1611
    Specifics as % of address span (1165016807/2868415096)40.6153    
    Specifics where AS prepended Path matches aggregate216244         AS-P_Path-Match % (216244/488784)44.24
    AS Path matches aggregate224699         AS-Path-Match % (224699/488784)45.9710
    AS Origin matches aggregate371171         AS-Origin-Match % (371171/488784)75.9376
    Root Prefixes397318
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0343158
      Root Prefixes with depth 142941
      Root Prefixes with depth 28969
      Root Prefixes with depth 31675
      Root Prefixes with depth 4445
      Root Prefixes with depth 592
      Root Prefixes with depth 632
      Root Prefixes with depth 76

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 ASes70817       ASes visible in only one AS path43264
    Origin only ASes59529         Origin ASs announced via a single AS path42332
    Transit only ASes396       Originating AS ATOM count70421
    Mixed ASes10892         Originating AS ATOM compression0.0795
    Multi-Origin Prefixes6593    
    ASes originating a single prefix24687    
    Average entries per origin AS12.5829         Maximum entries for an origin AS (AS327707)31
    Average address range span for an origin AS40732.3823         Maximum address range for an origin AS (AS4134)116038656

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 Paths3800545       Unique AS prepended Paths4070810
AS Paths used in FIB111612       AS Paths using prepending1086405
    AS paths associated with a single FIB entry51212       AS Paths using private ASs866
    Average AS path length4.3809       Number of Prefixes with Selected AS Prepending Paths120310
      Maximum AS Path length15       Number of Prefixes with AS Prepending Paths120310
    Average address weighted AS path length5.3942         Maximum prepended AS Path length43
    Average entries per AS Path0.2332       Average entries per FIB AS Path7.9391
    AS Paths per origin AS53.9689       FIB AS Paths per origin AS1.5849
      AS PATH ATOM compression0.1260    

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 /810       % Prefix /80.00
    Prefix count /913       % Prefix /90.00
    Prefix count /1040       % Prefix /100.00
    Prefix count /11101       % Prefix /110.01
    Prefix count /12294       % Prefix /120.03
    Prefix count /13579       % Prefix /130.07
    Prefix count /141185       % Prefix /140.13
    Prefix count /152008       % Prefix /150.23
    Prefix count /1613584       % Prefix /161.53
    Prefix count /178435       % Prefix /170.95
    Prefix count /1814404       % Prefix /181.63
    Prefix count /1926615       % Prefix /193.00
    Prefix count /2042698       % Prefix /204.82
    Prefix count /2151916       % Prefix /215.86
    Prefix count /22106331       % Prefix /2212.00
    Prefix count /2393459       % Prefix /2310.55
    Prefix count /24517065       % Prefix /2458.35
    Prefix count /251841       % Prefix /250.21
    Prefix count /261353       % Prefix /260.15
    Prefix count /27996       % Prefix /270.11
    Prefix count /28249       % Prefix /280.03
    Prefix count /29338       % Prefix /290.04
    Prefix count /30201       % Prefix /300.02
    Prefix count /31136       % Prefix /310.02
    Prefix count /322251       % Prefix /320.25

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 /810       % Prefix /80.00
    Prefix count /98       % Prefix /90.00
    Prefix count /1038       % Prefix /100.01
    Prefix count /1193       % Prefix /110.02
    Prefix count /12251       % Prefix /120.06
    Prefix count /13467       % Prefix /130.12
    Prefix count /14986       % Prefix /140.25
    Prefix count /151592       % Prefix /150.40
    Prefix count /1610240       % Prefix /162.58
    Prefix count /174438       % Prefix /171.12
    Prefix count /186643       % Prefix /181.67
    Prefix count /1914925       % Prefix /193.76
    Prefix count /2018883       % Prefix /204.75
    Prefix count /2122070       % Prefix /215.55
    Prefix count /2256783       % Prefix /2214.29
    Prefix count /2335578       % Prefix /238.95
    Prefix count /24224271       % Prefix /2456.45
    Prefix count /2518       % Prefix /250.00
    Prefix count /265       % Prefix /260.00
    Prefix count /278       % Prefix /270.00
    Prefix count /283       % Prefix /280.00
    Prefix count /290       % Prefix /290.00
    Prefix count /300       % Prefix /300.00
    Prefix count /310       % Prefix /310.00
    Prefix count /328       % 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 1238347642       % Addresses at AS distance 15.9
    Addresses at AS distance 22074775672       % Addresses at AS distance 251.4
    Addresses at AS distance 3394947888       % Addresses at AS distance 39.8
    Addresses at AS distance 4949886502       % Addresses at AS distance 423.6
    Addresses at AS distance 5258939407       % Addresses at AS distance 56.4
    Addresses at AS distance 672952712       % Addresses at AS distance 61.8
    Addresses at AS distance 722724480       % Addresses at AS distance 70.6
    Addresses at AS distance 813352192       % Addresses at AS distance 80.3
    Addresses at AS distance 96201088       % Addresses at AS distance 90.2
    Addresses at AS distance 101287168       % Addresses at AS distance 100.0
    Addresses at AS distance 1115104       % Addresses at AS distance 110.0
    Addresses at AS distance 12512       % Addresses at AS distance 120.0
    Addresses at AS distance 131536       % 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 hops238347642       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops2313123314       % Addresses reachable within 2 AS hops57
    Addresses reachable within 3 AS hops2708071202       % Addresses reachable within 3 AS hops67
    Addresses reachable within 4 AS hops3657957704       % Addresses reachable within 4 AS hops90
    Addresses reachable within 5 AS hops3916897111       % Addresses reachable within 5 AS hops97
    Addresses reachable within 6 AS hops3989849823       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops4012574303       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4025926495       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4032127583       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4033414751       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4033429855       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4033430367       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops4033431903       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops4033431903       % 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 hops40       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17136       % ASes reachable at 2 AS hops24
    ASes reachable at 3 AS hops40921       % ASes reachable at 3 AS hops57
    ASes reachable at 4 AS hops10336       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1791       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops336       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops165       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops86       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops5       % 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 hops1       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops41       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops17177       Cumulative % ASes by AS hops 224.3
    ASes reachable by 3 AS hops58098       Cumulative % ASes by AS hops 382.0
    ASes reachable by 4 AS hops68434       Cumulative % ASes by AS hops 496.6
    ASes reachable by 5 AS hops70225       Cumulative % ASes by AS hops 599.2
    ASes reachable by 6 AS hops70561       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops70726       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops70812       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops70817       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops70817       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops70817       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops70817       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops70817       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops70817       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 /56       % AS's announcing span of /50.0001
    AS's announcing span of /611       % AS's announcing span of /60.0002
    AS's announcing span of /724       % AS's announcing span of /70.0003
    AS's announcing span of /844       % AS's announcing span of /80.0006
    AS's announcing span of /978       % AS's announcing span of /90.0011
    AS's announcing span of /10108       % AS's announcing span of /100.0015
    AS's announcing span of /11178       % AS's announcing span of /110.0025
    AS's announcing span of /12243       % AS's announcing span of /120.0035
    AS's announcing span of /13429       % AS's announcing span of /130.0061
    AS's announcing span of /14851       % AS's announcing span of /140.0122
    AS's announcing span of /151759       % AS's announcing span of /150.0251
    AS's announcing span of /161863       % AS's announcing span of /160.0266
    AS's announcing span of /172429       % AS's announcing span of /170.0347
    AS's announcing span of /183796       % AS's announcing span of /180.0542
    AS's announcing span of /195044       % AS's announcing span of /190.0720
    AS's announcing span of /207515       % AS's announcing span of /200.1073
    AS's announcing span of /2110297       % AS's announcing span of /210.1471
    AS's announcing span of /2211953       % AS's announcing span of /220.1707
    AS's announcing span of /237384       % AS's announcing span of /230.1055
    AS's announcing span of /2415925       % AS's announcing span of /240.2274
    AS's announcing span of /2518       % AS's announcing span of /250.0003
    AS's announcing span of /2610       % AS's announcing span of /260.0001
    AS's announcing span of /2719       % AS's announcing span of /270.0003
    AS's announcing span of /2819       % 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 /300       % 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 Count167430
Average AS Connectivity Degree (334860/70817)4.7285
Average AS Connectivity IN:OUT Degree0.2731
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 Path470836Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path461239Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin324706Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation324738Report (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 Dec 1 16:40:00 2020 (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