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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Tue Dec 12 02:20:00 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)732332   Change in FIB Size-5   Change (%)-0.001
    All BGP entries (RIB)32601345
    RIB/FIB ratio (32601345/732332)44.5172
      Valid entries32601345
      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)2867163602
    Total address space advertised (prefix length)0.58302292
    Percentage of IPv4 space advertised (2867163602/4294967295)66.756355
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3915
    Average address span (as prefix size)20.0652
Average prefix length22.7373

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 aggregates405652       Specifics as % of FIB entries (405652/732332)55.3918
    Specifics as % of address span (1083647949/2867163602)37.7951    
    Specifics where AS prepended Path matches aggregate173208         AS-P_Path-Match % (173208/405652)42.70
    AS Path matches aggregate182459         AS-Path-Match % (182459/405652)44.9792
    AS Origin matches aggregate312675         AS-Origin-Match % (312675/405652)77.0796
    Root Prefixes326680
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0281790
      Root Prefixes with depth 135421
      Root Prefixes with depth 27458
      Root Prefixes with depth 31541
      Root Prefixes with depth 4371
      Root Prefixes with depth 571
      Root Prefixes with depth 621
      Root Prefixes with depth 77

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 ASes59984       ASes visible in only one AS path37224
    Origin only ASes50457         Origin ASs announced via a single AS path36275
    Transit only ASes306       Originating AS ATOM count59678
    Mixed ASes9221         Originating AS ATOM compression0.0815
    Multi-Origin Prefixes6029    
    ASes originating a single prefix22307    
    Average entries per origin AS12.2714         Maximum entries for an origin AS (AS197695)290
    Average address range span for an origin AS48043.8956         Maximum address range for an origin AS (AS4134)119586816

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 Paths4059107       Unique AS prepended Paths4325322
AS Paths used in FIB93368       AS Paths using prepending1062668
    AS paths associated with a single FIB entry43729       AS Paths using private ASs1676
    Average AS path length3.7704         Maximum AS Path length17
    Average address weighted AS path length4.6856         Maximum prepended AS Path length39
    Average entries per AS Path0.1804       Average entries per FIB AS Path7.8435
    AS Paths per origin AS68.0168       FIB AS Paths per origin AS1.5645
      AS PATH ATOM compression0.1275    

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 /100.00
    Prefix count /11106       % Prefix /110.01
    Prefix count /12287       % Prefix /120.04
    Prefix count /13552       % Prefix /130.08
    Prefix count /141084       % Prefix /140.15
    Prefix count /151903       % Prefix /150.26
    Prefix count /1613558       % Prefix /161.85
    Prefix count /178055       % Prefix /171.10
    Prefix count /1814104       % Prefix /181.93
    Prefix count /1925949       % Prefix /193.54
    Prefix count /2040298       % Prefix /205.50
    Prefix count /2148103       % Prefix /216.57
    Prefix count /2288991       % Prefix /2212.15
    Prefix count /2375241       % Prefix /2310.27
    Prefix count /24402813       % Prefix /2455.00
    Prefix count /251615       % Prefix /250.22
    Prefix count /261539       % Prefix /260.21
    Prefix count /271391       % Prefix /270.19
    Prefix count /281123       % Prefix /280.15
    Prefix count /29996       % Prefix /290.14
    Prefix count /30640       % Prefix /300.09
    Prefix count /31479       % Prefix /310.07
    Prefix count /323441       % Prefix /320.47

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 /1199       % Prefix /110.03
    Prefix count /12258       % Prefix /120.08
    Prefix count /13447       % Prefix /130.14
    Prefix count /14925       % Prefix /140.28
    Prefix count /151501       % Prefix /150.46
    Prefix count /1610092       % Prefix /163.09
    Prefix count /174351       % Prefix /171.33
    Prefix count /187268       % Prefix /182.22
    Prefix count /1915053       % Prefix /194.61
    Prefix count /2018712       % Prefix /205.73
    Prefix count /2121300       % Prefix /216.52
    Prefix count /2244867       % Prefix /2213.73
    Prefix count /2326620       % Prefix /238.15
    Prefix count /24174361       % Prefix /2453.37
    Prefix count /2520       % Prefix /250.01
    Prefix count /2613       % Prefix /260.00
    Prefix count /2722       % Prefix /270.01
    Prefix count /284       % Prefix /280.00
    Prefix count /297       % Prefix /290.00
    Prefix count /30108       % Prefix /300.03
    Prefix count /3186       % Prefix /310.03
    Prefix count /32510       % Prefix /320.16

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 1320961950       % Addresses at AS distance 18.1
    Addresses at AS distance 22172198496       % Addresses at AS distance 255.0
    Addresses at AS distance 31135005289       % Addresses at AS distance 328.7
    Addresses at AS distance 4250830326       % Addresses at AS distance 46.3
    Addresses at AS distance 542917750       % Addresses at AS distance 51.1
    Addresses at AS distance 613431436       % Addresses at AS distance 60.3
    Addresses at AS distance 79142592       % Addresses at AS distance 70.2
    Addresses at AS distance 86291712       % Addresses at AS distance 80.2
    Addresses at AS distance 920480       % Addresses at AS distance 90.0
    Addresses at AS distance 108192       % Addresses at AS distance 100.0
    Addresses at AS distance 113328       % 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
    Addresses at AS distance 150       % Addresses at AS distance 150.0
    Addresses at AS distance 160       % Addresses at AS distance 160.0
     
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 hops320961950       % Addresses reachable within 1 AS hops8
    Addresses reachable within 2 AS hops2493160446       % Addresses reachable within 2 AS hops63
    Addresses reachable within 3 AS hops3628165735       % Addresses reachable within 3 AS hops91
    Addresses reachable within 4 AS hops3878996061       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3921913811       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3935345247       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3944487839       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3950779551       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3950800031       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3950808223       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3950811551       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops3950811551       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3950811551       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops3950811551       % Addresses reachable within 14 AS hops100
    Addresses reachable within 15 AS hops3950811551       % Addresses reachable within 15 AS hops100
    Addresses reachable within 16 AS hops3950811551       % Addresses reachable within 16 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 hops17803       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops33313       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops7203       % ASes reachable at 4 AS hops12
    ASes reachable at 5 AS hops1209       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops213       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops108       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops66       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops6       % 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
    ASes reachable at 15 AS hops0       % ASes reachable at 15 AS hops0
    ASes reachable at 16 AS hops0       % ASes reachable at 16 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 hops17865       Cumulative % ASes by AS hops 229.8
    ASes reachable by 3 AS hops51178       Cumulative % ASes by AS hops 385.3
    ASes reachable by 4 AS hops58381       Cumulative % ASes by AS hops 497.3
    ASes reachable by 5 AS hops59590       Cumulative % ASes by AS hops 599.3
    ASes reachable by 6 AS hops59803       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops59911       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops59977       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops59983       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops59983       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops59984       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops59984       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops59984       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops59984       Cumulative % ASes by AS hops 14100.0
    ASes reachable by 15 AS hops59984       Cumulative % ASes by AS hops 15100.0
    ASes reachable by 16 AS hops59984       Cumulative % ASes by AS hops 16100.0

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 /729       % AS's announcing span of /70.0005
    AS's announcing span of /840       % 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 /10111       % AS's announcing span of /100.0019
    AS's announcing span of /11179       % AS's announcing span of /110.0030
    AS's announcing span of /12221       % AS's announcing span of /120.0037
    AS's announcing span of /13455       % AS's announcing span of /130.0077
    AS's announcing span of /14862       % AS's announcing span of /140.0145
    AS's announcing span of /151737       % AS's announcing span of /150.0293
    AS's announcing span of /161807       % AS's announcing span of /160.0305
    AS's announcing span of /172244       % AS's announcing span of /170.0378
    AS's announcing span of /183580       % AS's announcing span of /180.0603
    AS's announcing span of /194722       % AS's announcing span of /190.0796
    AS's announcing span of /206128       % AS's announcing span of /200.1033
    AS's announcing span of /217800       % AS's announcing span of /210.1314
    AS's announcing span of /229337       % AS's announcing span of /220.1573
    AS's announcing span of /236085       % AS's announcing span of /230.1025
    AS's announcing span of /2413832       % AS's announcing span of /240.2331
    AS's announcing span of /2522       % AS's announcing span of /250.0004
    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 /2815       % AS's announcing span of /280.0003
    AS's announcing span of /298       % AS's announcing span of /290.0001
    AS's announcing span of /303       % AS's announcing span of /300.0001
    AS's announcing span of /310       % AS's announcing span of /310.0000
    AS's announcing span of /324       % AS's announcing span of /320.0001

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 Count146673
Average AS Connectivity Degree (293346/59984)4.8904
Average AS Connectivity IN:OUT Degree0.2876
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 Path393273Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path384492Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin268466Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation268539Report (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 12 02:20:00 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