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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Mon Sep 27 22:40:00 2021 (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)931039   Change in FIB Size-15   Change (%)-0.002
    All BGP entries (RIB)27911238
    RIB/FIB ratio (27911238/931039)29.9786
      Valid entries27911238
      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)3071566148
    Total address space advertised (prefix length)0.48367269
    Percentage of IPv4 space advertised (3071566148/4294967295)71.515472
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3299
    Average address span (as prefix size)20.3122
Average prefix length22.8520

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 aggregates515082       Specifics as % of FIB entries (515082/931039)55.3234
    Specifics as % of address span (1155878798/3071566148)37.6316    
    Specifics where AS prepended Path matches aggregate217028         AS-P_Path-Match % (217028/515082)42.13
    AS Path matches aggregate240191         AS-Path-Match % (240191/515082)46.6316
    AS Origin matches aggregate396898         AS-Origin-Match % (396898/515082)77.0553
    Root Prefixes415957
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0359861
      Root Prefixes with depth 144563
      Root Prefixes with depth 29272
      Root Prefixes with depth 31659
      Root Prefixes with depth 4454
      Root Prefixes with depth 5111
      Root Prefixes with depth 628
      Root Prefixes with depth 79

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 ASes72719       ASes visible in only one AS path44243
    Origin only ASes61139         Origin ASs announced via a single AS path43361
    Transit only ASes443       Originating AS ATOM count72276
    Mixed ASes11137         Originating AS ATOM compression0.0776
    Multi-Origin Prefixes5737    
    ASes originating a single prefix25154    
    Average entries per origin AS12.8817         Maximum entries for an origin AS (AS327687)137
    Average address range span for an origin AS42497.7330         Maximum address range for an origin AS (AS749)209299968

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 Paths3330288       Unique AS prepended Paths3570234
AS Paths used in FIB117110       AS Paths using prepending931065
    AS paths associated with a single FIB entry53951       AS Paths using private ASs647
    Average AS path length5.2427       Number of Prefixes with Selected AS Prepending Paths176711
      Maximum AS Path length16       Number of Prefixes with AS Prepending Paths176711
    Average address weighted AS path length6.8001         Maximum prepended AS Path length44
    Average entries per AS Path0.2796       Average entries per FIB AS Path7.9501
    AS Paths per origin AS46.0774       FIB AS Paths per origin AS1.6203
      AS PATH ATOM compression0.1258    

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 /816       % Prefix /80.00
    Prefix count /913       % Prefix /90.00
    Prefix count /1041       % Prefix /100.00
    Prefix count /11102       % Prefix /110.01
    Prefix count /12306       % Prefix /120.03
    Prefix count /13598       % Prefix /130.06
    Prefix count /141226       % Prefix /140.13
    Prefix count /152110       % Prefix /150.23
    Prefix count /1613755       % Prefix /161.48
    Prefix count /178528       % Prefix /170.92
    Prefix count /1814497       % Prefix /181.56
    Prefix count /1926561       % Prefix /192.85
    Prefix count /2044040       % Prefix /204.73
    Prefix count /2153685       % Prefix /215.77
    Prefix count /22111069       % Prefix /2211.93
    Prefix count /23100145       % Prefix /2310.76
    Prefix count /24546776       % Prefix /2458.73
    Prefix count /252022       % Prefix /250.22
    Prefix count /261276       % Prefix /260.14
    Prefix count /272260       % Prefix /270.24
    Prefix count /28449       % Prefix /280.05
    Prefix count /29315       % Prefix /290.03
    Prefix count /30199       % Prefix /300.02
    Prefix count /31308       % Prefix /310.03
    Prefix count /32742       % Prefix /320.08

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 /816       % Prefix /80.00
    Prefix count /99       % Prefix /90.00
    Prefix count /1041       % Prefix /100.01
    Prefix count /1196       % Prefix /110.02
    Prefix count /12270       % Prefix /120.06
    Prefix count /13496       % Prefix /130.12
    Prefix count /141035       % Prefix /140.25
    Prefix count /151648       % Prefix /150.40
    Prefix count /1610339       % Prefix /162.49
    Prefix count /174441       % Prefix /171.07
    Prefix count /186854       % Prefix /181.65
    Prefix count /1915155       % Prefix /193.64
    Prefix count /2019371       % Prefix /204.66
    Prefix count /2122062       % Prefix /215.30
    Prefix count /2257996       % Prefix /2213.94
    Prefix count /2338007       % Prefix /239.14
    Prefix count /24238006       % Prefix /2457.22
    Prefix count /2521       % Prefix /250.01
    Prefix count /264       % Prefix /260.00
    Prefix count /2710       % Prefix /270.00
    Prefix count /283       % Prefix /280.00
    Prefix count /290       % Prefix /290.00
    Prefix count /301       % Prefix /300.00
    Prefix count /314       % Prefix /310.00
    Prefix count /3272       % 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 1238204185       % Addresses at AS distance 15.6
    Addresses at AS distance 2389307474       % Addresses at AS distance 29.2
    Addresses at AS distance 3929093336       % Addresses at AS distance 322.0
    Addresses at AS distance 41168348132       % Addresses at AS distance 427.6
    Addresses at AS distance 51011329479       % Addresses at AS distance 523.9
    Addresses at AS distance 6403953856       % Addresses at AS distance 69.6
    Addresses at AS distance 748118020       % Addresses at AS distance 71.1
    Addresses at AS distance 810826528       % Addresses at AS distance 80.3
    Addresses at AS distance 910726656       % Addresses at AS distance 90.3
    Addresses at AS distance 1011226368       % Addresses at AS distance 100.3
    Addresses at AS distance 116300928       % Addresses at AS distance 110.1
    Addresses at AS distance 127680       % Addresses at AS distance 120.0
    Addresses at AS distance 13256       % Addresses at AS distance 130.0
    Addresses at AS distance 140       % Addresses at AS distance 140.0
    Addresses at AS distance 152048       % 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 hops238204185       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops627511659       % Addresses reachable within 2 AS hops14
    Addresses reachable within 3 AS hops1556604995       % Addresses reachable within 3 AS hops36
    Addresses reachable within 4 AS hops2724953127       % Addresses reachable within 4 AS hops64
    Addresses reachable within 5 AS hops3736282606       % Addresses reachable within 5 AS hops88
    Addresses reachable within 6 AS hops4140236462       % Addresses reachable within 6 AS hops97
    Addresses reachable within 7 AS hops4188354482       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4199181010       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4209907666       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4221134034       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4227434962       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4227442642       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops4227442898       % Addresses reachable within 13 AS hops99
    Addresses reachable within 14 AS hops4227442898       % Addresses reachable within 14 AS hops99
    Addresses reachable within 15 AS hops4227444946       % Addresses reachable within 15 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 hops36       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops17376       % ASes reachable at 2 AS hops23
    ASes reachable at 3 AS hops42266       % ASes reachable at 3 AS hops58
    ASes reachable at 4 AS hops10590       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1839       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops366       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops158       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops82       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops4       % 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
    ASes reachable at 15 AS hops1       % ASes reachable at 15 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 hops37       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops17413       Cumulative % ASes by AS hops 223.9
    ASes reachable by 3 AS hops59679       Cumulative % ASes by AS hops 382.1
    ASes reachable by 4 AS hops70269       Cumulative % ASes by AS hops 496.6
    ASes reachable by 5 AS hops72108       Cumulative % ASes by AS hops 599.2
    ASes reachable by 6 AS hops72474       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops72632       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops72714       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops72718       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops72718       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops72718       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops72718       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops72718       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops72718       Cumulative % ASes by AS hops 14100.0
    ASes reachable by 15 AS hops72719       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 /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 /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 /975       % AS's announcing span of /90.0010
    AS's announcing span of /10112       % AS's announcing span of /100.0016
    AS's announcing span of /11174       % AS's announcing span of /110.0024
    AS's announcing span of /12247       % AS's announcing span of /120.0034
    AS's announcing span of /13441       % AS's announcing span of /130.0061
    AS's announcing span of /14840       % AS's announcing span of /140.0117
    AS's announcing span of /151726       % AS's announcing span of /150.0240
    AS's announcing span of /161859       % AS's announcing span of /160.0258
    AS's announcing span of /172462       % AS's announcing span of /170.0342
    AS's announcing span of /183829       % AS's announcing span of /180.0532
    AS's announcing span of /195097       % AS's announcing span of /190.0708
    AS's announcing span of /207701       % AS's announcing span of /200.1070
    AS's announcing span of /2110374       % AS's announcing span of /210.1442
    AS's announcing span of /2212211       % AS's announcing span of /220.1697
    AS's announcing span of /237945       % AS's announcing span of /230.1104
    AS's announcing span of /2416711       % AS's announcing span of /240.2322
    AS's announcing span of /2514       % AS's announcing span of /250.0002
    AS's announcing span of /2611       % AS's announcing span of /260.0002
    AS's announcing span of /2711       % AS's announcing span of /270.0002
    AS's announcing span of /2820       % AS's announcing span of /280.0003
    AS's announcing span of /2910       % 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 /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 Count171966
Average AS Connectivity Degree (343932/72719)4.7296
Average AS Connectivity IN:OUT Degree0.2712
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 Path504440Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path480220Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin337643Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation337676Report (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 Mon Sep 27 22:40:00 2021 (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