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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Tue Aug 14 20:20:00 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)765172   Change in FIB Size6   Change (%)0.001
    All BGP entries (RIB)30447963
    RIB/FIB ratio (30447963/765172)39.7923
      Valid entries30447963
      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)2861333522
    Total address space advertised (prefix length)0.58595948
    Percentage of IPv4 space advertised (2861333522/4294967295)66.620613
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3739
    Average address span (as prefix size)20.1316
Average prefix length22.7736

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 aggregates423318       Specifics as % of FIB entries (423318/765172)55.3232
    Specifics as % of address span (1101067985/2861333522)38.4809    
    Specifics where AS prepended Path matches aggregate186215         AS-P_Path-Match % (186215/423318)43.99
    AS Path matches aggregate195243         AS-Path-Match % (195243/423318)46.1221
    AS Origin matches aggregate325841         AS-Origin-Match % (325841/423318)76.9731
    Root Prefixes341854
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0293796
      Root Prefixes with depth 138323
      Root Prefixes with depth 27736
      Root Prefixes with depth 31509
      Root Prefixes with depth 4366
      Root Prefixes with depth 587
      Root Prefixes with depth 627
      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 ASes62323       ASes visible in only one AS path36949
    Origin only ASes52357         Origin ASs announced via a single AS path36078
    Transit only ASes335       Originating AS ATOM count61988
    Mixed ASes9631         Originating AS ATOM compression0.0810
    Multi-Origin Prefixes5941    
    ASes originating a single prefix22844    
    Average entries per origin AS12.3439         Maximum entries for an origin AS (AS262589)225
    Average address range span for an origin AS46159.4748         Maximum address range for an origin AS (AS4134)118018304

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 Paths3645661       Unique AS prepended Paths3889118
AS Paths used in FIB103629       AS Paths using prepending936726
    AS paths associated with a single FIB entry49528       AS Paths using private ASs1554
    Average AS path length3.7839         Maximum AS Path length15
    Average address weighted AS path length4.7309         Maximum prepended AS Path length46
    Average entries per AS Path0.2099       Average entries per FIB AS Path7.3838
    AS Paths per origin AS58.8124       FIB AS Paths per origin AS1.6718
      AS PATH ATOM compression0.1354    

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 /814       % Prefix /80.00
    Prefix count /911       % Prefix /90.00
    Prefix count /1036       % Prefix /100.00
    Prefix count /1199       % Prefix /110.01
    Prefix count /12294       % Prefix /120.04
    Prefix count /13572       % Prefix /130.07
    Prefix count /141113       % Prefix /140.15
    Prefix count /151941       % Prefix /150.25
    Prefix count /1613569       % Prefix /161.77
    Prefix count /178242       % Prefix /171.08
    Prefix count /1814253       % Prefix /181.86
    Prefix count /1926356       % Prefix /193.44
    Prefix count /2041374       % Prefix /205.41
    Prefix count /2148289       % Prefix /216.31
    Prefix count /2294379       % Prefix /2212.33
    Prefix count /2376709       % Prefix /2310.03
    Prefix count /24425073       % Prefix /2455.55
    Prefix count /251828       % Prefix /250.24
    Prefix count /261523       % Prefix /260.20
    Prefix count /271551       % Prefix /270.20
    Prefix count /28930       % Prefix /280.12
    Prefix count /291724       % Prefix /290.23
    Prefix count /301088       % Prefix /300.14
    Prefix count /31471       % Prefix /310.06
    Prefix count /323733       % Prefix /320.49

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 /814       % Prefix /80.00
    Prefix count /95       % Prefix /90.00
    Prefix count /1036       % Prefix /100.01
    Prefix count /1192       % Prefix /110.03
    Prefix count /12256       % Prefix /120.07
    Prefix count /13465       % Prefix /130.14
    Prefix count /14951       % Prefix /140.28
    Prefix count /151558       % Prefix /150.46
    Prefix count /169968       % Prefix /162.92
    Prefix count /174426       % Prefix /171.29
    Prefix count /187381       % Prefix /182.16
    Prefix count /1915053       % Prefix /194.40
    Prefix count /2018791       % Prefix /205.50
    Prefix count /2121604       % Prefix /216.32
    Prefix count /2248448       % Prefix /2214.17
    Prefix count /2328251       % Prefix /238.26
    Prefix count /24183611       % Prefix /2453.71
    Prefix count /2528       % Prefix /250.01
    Prefix count /2610       % Prefix /260.00
    Prefix count /2720       % Prefix /270.01
    Prefix count /2810       % Prefix /280.00
    Prefix count /298       % Prefix /290.00
    Prefix count /30323       % Prefix /300.09
    Prefix count /315       % Prefix /310.00
    Prefix count /32540       % 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 1306710113       % Addresses at AS distance 17.7
    Addresses at AS distance 22187239327       % Addresses at AS distance 255.2
    Addresses at AS distance 31117473698       % Addresses at AS distance 328.2
    Addresses at AS distance 4275090460       % Addresses at AS distance 46.9
    Addresses at AS distance 540632651       % Addresses at AS distance 51.0
    Addresses at AS distance 616893850       % Addresses at AS distance 60.4
    Addresses at AS distance 711055168       % Addresses at AS distance 70.3
    Addresses at AS distance 87273472       % Addresses at AS distance 80.2
    Addresses at AS distance 930208       % Addresses at AS distance 90.0
    Addresses at AS distance 101024       % Addresses at AS distance 100.0
    Addresses at AS distance 111024       % Addresses at AS distance 110.0
    Addresses at AS distance 12512       % 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 hops306710113       % Addresses reachable within 1 AS hops7
    Addresses reachable within 2 AS hops2493949440       % Addresses reachable within 2 AS hops62
    Addresses reachable within 3 AS hops3611423138       % Addresses reachable within 3 AS hops91
    Addresses reachable within 4 AS hops3886513598       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3927146249       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3944040099       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3955095267       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3962368739       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3962398947       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3962399971       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3962400995       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops3962401507       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3962401507       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops3962401507       % Addresses reachable within 14 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 hops46       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops18352       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops34381       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops7708       % ASes reachable at 4 AS hops12
    ASes reachable at 5 AS hops1336       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops258       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops141       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops84       % 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 hops12       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops58       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops18410       Cumulative % ASes by AS hops 229.5
    ASes reachable by 3 AS hops52791       Cumulative % ASes by AS hops 384.7
    ASes reachable by 4 AS hops60499       Cumulative % ASes by AS hops 497.1
    ASes reachable by 5 AS hops61835       Cumulative % ASes by AS hops 599.2
    ASes reachable by 6 AS hops62093       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops62234       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops62318       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops62323       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops62323       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops62323       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops62323       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops62323       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops62323       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 /69       % 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 /839       % AS's announcing span of /80.0006
    AS's announcing span of /978       % AS's announcing span of /90.0013
    AS's announcing span of /10116       % AS's announcing span of /100.0019
    AS's announcing span of /11176       % AS's announcing span of /110.0029
    AS's announcing span of /12228       % AS's announcing span of /120.0037
    AS's announcing span of /13454       % AS's announcing span of /130.0074
    AS's announcing span of /14848       % AS's announcing span of /140.0138
    AS's announcing span of /151722       % AS's announcing span of /150.0279
    AS's announcing span of /161852       % AS's announcing span of /160.0300
    AS's announcing span of /172270       % AS's announcing span of /170.0368
    AS's announcing span of /183673       % AS's announcing span of /180.0596
    AS's announcing span of /194772       % AS's announcing span of /190.0774
    AS's announcing span of /206388       % AS's announcing span of /200.1036
    AS's announcing span of /218370       % AS's announcing span of /210.1358
    AS's announcing span of /2210020       % AS's announcing span of /220.1625
    AS's announcing span of /236263       % AS's announcing span of /230.1016
    AS's announcing span of /2414238       % AS's announcing span of /240.2310
    AS's announcing span of /2521       % AS's announcing span of /250.0003
    AS's announcing span of /2614       % AS's announcing span of /260.0002
    AS's announcing span of /2716       % AS's announcing span of /270.0003
    AS's announcing span of /2822       % AS's announcing span of /280.0004
    AS's announcing span of /2912       % AS's announcing span of /290.0002
    AS's announcing span of /304       % AS's announcing span of /300.0001
    AS's announcing span of /311       % AS's announcing span of /310.0000
    AS's announcing span of /325       % 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 Count149439
Average AS Connectivity Degree (298878/62323)4.7956
Average AS Connectivity IN:OUT Degree0.2792
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 Path413911Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path405748Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin280004Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation280092Report (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 Aug 14 20:20:00 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