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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Wed Jan 11 22:40:00 2023 (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)963889   Change in FIB Size57   Change (%)0.006
    All BGP entries (RIB)26875765
    RIB/FIB ratio (26875765/963889)27.8826
      Valid entries26875765
      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)3068556710
    Total address space advertised (prefix length)0.48508690
    Percentage of IPv4 space advertised (3068556710/4294967295)71.445403
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3184
    Average address span (as prefix size)20.3638
Average prefix length22.8611

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 aggregates519995       Specifics as % of FIB entries (519995/963889)53.9476
    Specifics as % of address span (1167600846/3068556710)38.0505    
    Specifics where AS prepended Path matches aggregate229091         AS-P_Path-Match % (229091/519995)44.06
    AS Path matches aggregate247196         AS-Path-Match % (247196/519995)47.5381
    AS Origin matches aggregate401313         AS-Origin-Match % (401313/519995)77.1763
    Root Prefixes443894
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0386660
      Root Prefixes with depth 145575
      Root Prefixes with depth 29378
      Root Prefixes with depth 31680
      Root Prefixes with depth 4459
      Root Prefixes with depth 596
      Root Prefixes with depth 633
      Root Prefixes with depth 712
      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 ASes74829       ASes visible in only one AS path45098
    Origin only ASes62831         Origin ASs announced via a single AS path44044
    Transit only ASes542       Originating AS ATOM count74287
    Mixed ASes11456         Originating AS ATOM compression0.0771
    Multi-Origin Prefixes11440    
    ASes originating a single prefix25768    
    Average entries per origin AS12.9752         Maximum entries for an origin AS (AS327687)173
    Average address range span for an origin AS41306.7792         Maximum address range for an origin AS (AS749)210722816

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 Paths3138064       Unique AS prepended Paths3373568
AS Paths used in FIB121822       AS Paths using prepending887469
    AS paths associated with a single FIB entry57154       AS Paths using private ASs394
    Average AS path length4.9283       Number of Prefixes with Selected AS Prepending Paths135962
      Maximum AS Path length13       Number of Prefixes with AS Prepending Paths135962
    Average address weighted AS path length6.3551         Maximum prepended AS Path length164
    Average entries per AS Path0.3072       Average entries per FIB AS Path7.9123
    AS Paths per origin AS42.2424       FIB AS Paths per origin AS1.6399
      AS PATH ATOM compression0.1264    

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 /817       % Prefix /80.00
    Prefix count /913       % Prefix /90.00
    Prefix count /1039       % Prefix /100.00
    Prefix count /11103       % Prefix /110.01
    Prefix count /12300       % Prefix /120.03
    Prefix count /13583       % Prefix /130.06
    Prefix count /141215       % Prefix /140.13
    Prefix count /152124       % Prefix /150.22
    Prefix count /1613679       % Prefix /161.42
    Prefix count /178572       % Prefix /170.89
    Prefix count /1814410       % Prefix /181.49
    Prefix count /1926265       % Prefix /192.72
    Prefix count /2045748       % Prefix /204.75
    Prefix count /2154506       % Prefix /215.65
    Prefix count /22113616       % Prefix /2211.79
    Prefix count /23106059       % Prefix /2311.00
    Prefix count /24573305       % Prefix /2459.48
    Prefix count /25484       % Prefix /250.05
    Prefix count /26642       % Prefix /260.07
    Prefix count /271007       % Prefix /270.10
    Prefix count /28117       % Prefix /280.01
    Prefix count /29219       % Prefix /290.02
    Prefix count /3032       % Prefix /300.00
    Prefix count /31298       % Prefix /310.03
    Prefix count /32536       % Prefix /320.06

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 /817       % Prefix /80.00
    Prefix count /99       % Prefix /90.00
    Prefix count /1039       % Prefix /100.01
    Prefix count /1197       % Prefix /110.02
    Prefix count /12264       % Prefix /120.06
    Prefix count /13481       % Prefix /130.11
    Prefix count /141016       % Prefix /140.23
    Prefix count /151637       % Prefix /150.37
    Prefix count /1610260       % Prefix /162.31
    Prefix count /174484       % Prefix /171.01
    Prefix count /186921       % Prefix /181.56
    Prefix count /1915017       % Prefix /193.38
    Prefix count /2019397       % Prefix /204.37
    Prefix count /2122869       % Prefix /215.15
    Prefix count /2259589       % Prefix /2213.42
    Prefix count /2341523       % Prefix /239.35
    Prefix count /24260258       % Prefix /2458.63
    Prefix count /251       % Prefix /250.00
    Prefix count /262       % Prefix /260.00
    Prefix count /274       % Prefix /270.00
    Prefix count /281       % Prefix /280.00
    Prefix count /291       % Prefix /290.00
    Prefix count /301       % Prefix /300.00
    Prefix count /314       % Prefix /310.00
    Prefix count /322       % 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 1178619477       % Addresses at AS distance 14.2
    Addresses at AS distance 2261328166       % Addresses at AS distance 26.2
    Addresses at AS distance 31540396691       % Addresses at AS distance 336.4
    Addresses at AS distance 41579938948       % Addresses at AS distance 437.3
    Addresses at AS distance 5519792130       % Addresses at AS distance 512.3
    Addresses at AS distance 6106521056       % Addresses at AS distance 62.5
    Addresses at AS distance 721235968       % Addresses at AS distance 70.5
    Addresses at AS distance 820511232       % Addresses at AS distance 80.5
    Addresses at AS distance 96492416       % Addresses at AS distance 90.2
    Addresses at AS distance 101295872       % Addresses at AS distance 100.0
    Addresses at AS distance 1125344       % Addresses at AS distance 110.0
    Addresses at AS distance 12256       % Addresses at AS distance 120.0
     
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 hops178619477       % Addresses reachable within 1 AS hops4
    Addresses reachable within 2 AS hops439947643       % Addresses reachable within 2 AS hops10
    Addresses reachable within 3 AS hops1980344334       % Addresses reachable within 3 AS hops46
    Addresses reachable within 4 AS hops3560283282       % Addresses reachable within 4 AS hops84
    Addresses reachable within 5 AS hops4080075412       % Addresses reachable within 5 AS hops96
    Addresses reachable within 6 AS hops4186596468       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops4207832436       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4228343668       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4234836084       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4236131956       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4236157300       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4236157556       % Addresses reachable within 12 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 hops31       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops16626       % ASes reachable at 2 AS hops22
    ASes reachable at 3 AS hops44552       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops10898       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops2035       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops483       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops157       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops41       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops4       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops1       % 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
     
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 hops32       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops16658       Cumulative % ASes by AS hops 222.3
    ASes reachable by 3 AS hops61210       Cumulative % ASes by AS hops 381.8
    ASes reachable by 4 AS hops72108       Cumulative % ASes by AS hops 496.4
    ASes reachable by 5 AS hops74143       Cumulative % ASes by AS hops 599.1
    ASes reachable by 6 AS hops74626       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops74783       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops74824       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops74828       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops74829       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops74829       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops74829       Cumulative % ASes by AS hops 12100.0

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 /41       % AS's announcing span of /40.0000
    AS's announcing span of /56       % AS's announcing span of /50.0001
    AS's announcing span of /610       % AS's announcing span of /60.0001
    AS's announcing span of /726       % AS's announcing span of /70.0004
    AS's announcing span of /844       % AS's announcing span of /80.0006
    AS's announcing span of /979       % AS's announcing span of /90.0011
    AS's announcing span of /10102       % AS's announcing span of /100.0014
    AS's announcing span of /11169       % AS's announcing span of /110.0023
    AS's announcing span of /12241       % AS's announcing span of /120.0033
    AS's announcing span of /13423       % AS's announcing span of /130.0057
    AS's announcing span of /14828       % AS's announcing span of /140.0112
    AS's announcing span of /151739       % AS's announcing span of /150.0235
    AS's announcing span of /161861       % AS's announcing span of /160.0252
    AS's announcing span of /172473       % AS's announcing span of /170.0335
    AS's announcing span of /183841       % AS's announcing span of /180.0520
    AS's announcing span of /195113       % AS's announcing span of /190.0692
    AS's announcing span of /207745       % AS's announcing span of /200.1049
    AS's announcing span of /2110402       % AS's announcing span of /210.1408
    AS's announcing span of /2212347       % AS's announcing span of /220.1672
    AS's announcing span of /238770       % AS's announcing span of /230.1188
    AS's announcing span of /2417616       % AS's announcing span of /240.2385
    AS's announcing span of /253       % AS's announcing span of /250.0000
    AS's announcing span of /263       % AS's announcing span of /260.0000
    AS's announcing span of /275       % AS's announcing span of /270.0001
    AS's announcing span of /282       % AS's announcing span of /280.0000
    AS's announcing span of /291       % AS's announcing span of /290.0000
    AS's announcing span of /300       % AS's announcing span of /300.0000
    AS's announcing span of /310       % 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 Count175373
Average AS Connectivity Degree (350746/74829)4.6873
Average AS Connectivity IN:OUT Degree0.2742
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 Path525531Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path506302Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin355319Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation355368Report (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 Jan 11 22:40:00 2023 (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