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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Mon Jan 21 00:00:00 2019 (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)790370   Change in FIB Size3   Change (%)0.000
    All BGP entries (RIB)31161696
    RIB/FIB ratio (31161696/790370)39.4267
      Valid entries31161696
      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)2843058034
    Total address space advertised (prefix length)0.59520360
    Percentage of IPv4 space advertised (2843058034/4294967295)66.195103
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3597
    Average address span (as prefix size)20.1874
Average prefix length22.7861

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 aggregates436017       Specifics as % of FIB entries (436017/790370)55.1662
    Specifics as % of address span (1113628830/2843058034)39.1701    
    Specifics where AS prepended Path matches aggregate185057         AS-P_Path-Match % (185057/436017)42.44
    AS Path matches aggregate189396         AS-Path-Match % (189396/436017)43.4378
    AS Origin matches aggregate334845         AS-Origin-Match % (334845/436017)76.7963
    Root Prefixes354353
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0305398
      Root Prefixes with depth 138837
      Root Prefixes with depth 28045
      Root Prefixes with depth 31564
      Root Prefixes with depth 4394
      Root Prefixes with depth 578
      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 ASes63710       ASes visible in only one AS path38299
    Origin only ASes53561         Origin ASs announced via a single AS path37359
    Transit only ASes338       Originating AS ATOM count63372
    Mixed ASes9811         Originating AS ATOM compression0.0802
    Multi-Origin Prefixes14289    
    ASes originating a single prefix23189    
    Average entries per origin AS12.4719         Maximum entries for an origin AS (AS58224)771
    Average address range span for an origin AS44863.0000         Maximum address range for an origin AS (AS4134)117330176

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 Paths3711162       Unique AS prepended Paths3960795
AS Paths used in FIB106916       AS Paths using prepending958455
    AS paths associated with a single FIB entry51256       AS Paths using private ASs1284
    Average AS path length3.9234         Maximum AS Path length15
    Average address weighted AS path length4.8793         Maximum prepended AS Path length46
    Average entries per AS Path0.2130       Average entries per FIB AS Path7.3924
    AS Paths per origin AS58.5615       FIB AS Paths per origin AS1.6871
      AS PATH ATOM compression0.1353    

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 /812       % Prefix /80.00
    Prefix count /910       % Prefix /90.00
    Prefix count /1036       % Prefix /100.00
    Prefix count /1199       % Prefix /110.01
    Prefix count /12297       % Prefix /120.04
    Prefix count /13574       % Prefix /130.07
    Prefix count /141157       % Prefix /140.15
    Prefix count /151982       % Prefix /150.25
    Prefix count /1613600       % Prefix /161.72
    Prefix count /178198       % Prefix /171.04
    Prefix count /1814240       % Prefix /181.80
    Prefix count /1926535       % Prefix /193.36
    Prefix count /2041550       % Prefix /205.26
    Prefix count /2149614       % Prefix /216.28
    Prefix count /2297886       % Prefix /2212.38
    Prefix count /2380599       % Prefix /2310.20
    Prefix count /24441740       % Prefix /2455.89
    Prefix count /251818       % Prefix /250.23
    Prefix count /261609       % Prefix /260.20
    Prefix count /271428       % Prefix /270.18
    Prefix count /281036       % Prefix /280.13
    Prefix count /291325       % Prefix /290.17
    Prefix count /301100       % Prefix /300.14
    Prefix count /31419       % Prefix /310.05
    Prefix count /323506       % Prefix /320.44

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 /812       % Prefix /80.00
    Prefix count /95       % Prefix /90.00
    Prefix count /1036       % Prefix /100.01
    Prefix count /1192       % Prefix /110.03
    Prefix count /12257       % Prefix /120.07
    Prefix count /13469       % Prefix /130.13
    Prefix count /14975       % Prefix /140.28
    Prefix count /151585       % Prefix /150.45
    Prefix count /169965       % Prefix /162.81
    Prefix count /174386       % Prefix /171.24
    Prefix count /187345       % Prefix /182.07
    Prefix count /1914924       % Prefix /194.21
    Prefix count /2018783       % Prefix /205.30
    Prefix count /2121693       % Prefix /216.12
    Prefix count /2250491       % Prefix /2214.25
    Prefix count /2330284       % Prefix /238.55
    Prefix count /24192104       % Prefix /2454.21
    Prefix count /2526       % Prefix /250.01
    Prefix count /2613       % Prefix /260.00
    Prefix count /2721       % Prefix /270.01
    Prefix count /2816       % Prefix /280.00
    Prefix count /2914       % Prefix /290.00
    Prefix count /30320       % Prefix /300.09
    Prefix count /319       % Prefix /310.00
    Prefix count /32528       % Prefix /320.15

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 1224244606       % Addresses at AS distance 15.7
    Addresses at AS distance 22135557327       % Addresses at AS distance 254.0
    Addresses at AS distance 31181081035       % Addresses at AS distance 329.9
    Addresses at AS distance 4286771080       % Addresses at AS distance 47.2
    Addresses at AS distance 577347144       % Addresses at AS distance 52.0
    Addresses at AS distance 629126712       % Addresses at AS distance 60.7
    Addresses at AS distance 713499600       % Addresses at AS distance 70.3
    Addresses at AS distance 88106272       % Addresses at AS distance 80.2
    Addresses at AS distance 9835072       % Addresses at AS distance 90.0
    Addresses at AS distance 1034560       % Addresses at AS distance 100.0
    Addresses at AS distance 112560       % Addresses at AS distance 110.0
    Addresses at AS distance 121536       % Addresses at AS distance 120.0
    Addresses at AS distance 1373472       % Addresses at AS distance 130.0
    Addresses at AS distance 145888       % 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 hops224244606       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops2359801933       % Addresses reachable within 2 AS hops59
    Addresses reachable within 3 AS hops3540882968       % Addresses reachable within 3 AS hops89
    Addresses reachable within 4 AS hops3827654048       % Addresses reachable within 4 AS hops96
    Addresses reachable within 5 AS hops3905001192       % Addresses reachable within 5 AS hops98
    Addresses reachable within 6 AS hops3934127904       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3947627504       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3955733776       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3956568848       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3956603408       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3956605968       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops3956607504       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops3956680976       % Addresses reachable within 13 AS hops99
    Addresses reachable within 14 AS hops3956686864       % 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 hops44       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops15963       % ASes reachable at 2 AS hops25
    ASes reachable at 3 AS hops37123       % ASes reachable at 3 AS hops58
    ASes reachable at 4 AS hops8675       % ASes reachable at 4 AS hops13
    ASes reachable at 5 AS hops1439       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops237       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops137       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops88       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops1       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops1       % 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
     
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 hops45       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops16008       Cumulative % ASes by AS hops 225.1
    ASes reachable by 3 AS hops53131       Cumulative % ASes by AS hops 383.4
    ASes reachable by 4 AS hops61806       Cumulative % ASes by AS hops 497.0
    ASes reachable by 5 AS hops63245       Cumulative % ASes by AS hops 599.3
    ASes reachable by 6 AS hops63482       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops63619       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops63707       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops63708       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops63709       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops63710       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops63710       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops63710       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops63710       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 /68       % 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 /842       % AS's announcing span of /80.0007
    AS's announcing span of /978       % AS's announcing span of /90.0012
    AS's announcing span of /10116       % AS's announcing span of /100.0018
    AS's announcing span of /11170       % AS's announcing span of /110.0027
    AS's announcing span of /12230       % AS's announcing span of /120.0036
    AS's announcing span of /13461       % AS's announcing span of /130.0073
    AS's announcing span of /14843       % AS's announcing span of /140.0134
    AS's announcing span of /151747       % AS's announcing span of /150.0277
    AS's announcing span of /161840       % AS's announcing span of /160.0292
    AS's announcing span of /172305       % AS's announcing span of /170.0366
    AS's announcing span of /183681       % AS's announcing span of /180.0584
    AS's announcing span of /194863       % AS's announcing span of /190.0771
    AS's announcing span of /206545       % AS's announcing span of /200.1038
    AS's announcing span of /218689       % AS's announcing span of /210.1378
    AS's announcing span of /2210502       % AS's announcing span of /220.1666
    AS's announcing span of /236328       % AS's announcing span of /230.1004
    AS's announcing span of /2414472       % AS's announcing span of /240.2295
    AS's announcing span of /2525       % AS's announcing span of /250.0004
    AS's announcing span of /2611       % AS's announcing span of /260.0002
    AS's announcing span of /2718       % AS's announcing span of /270.0003
    AS's announcing span of /2821       % AS's announcing span of /280.0003
    AS's announcing span of /2912       % AS's announcing span of /290.0002
    AS's announcing span of /308       % 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 /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 Count152842
Average AS Connectivity Degree (305684/63710)4.7981
Average AS Connectivity IN:OUT Degree0.2790
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 Path433502Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path429517Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin289663Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation289699Report (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 Jan 21 00:00:00 2019 (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.


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