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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Fri Jun 7 18:00:00 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)817938   Change in FIB Size47   Change (%)0.006
    All BGP entries (RIB)31324694
    RIB/FIB ratio (31324694/817938)38.2971
      Valid entries31324694
      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)2840514773
    Total address space advertised (prefix length)0.59649474
    Percentage of IPv4 space advertised (2840514773/4294967295)66.135888
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3473
    Average address span (as prefix size)20.2384
Average prefix length22.8152

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 aggregates455388       Specifics as % of FIB entries (455388/817938)55.6751
    Specifics as % of address span (1127068860/2840514773)39.6783    
    Specifics where AS prepended Path matches aggregate184714         AS-P_Path-Match % (184714/455388)40.56
    AS Path matches aggregate196684         AS-Path-Match % (196684/455388)43.1904
    AS Origin matches aggregate340181         AS-Origin-Match % (340181/455388)74.7014
    Root Prefixes362550
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0312668
      Root Prefixes with depth 139567
      Root Prefixes with depth 28210
      Root Prefixes with depth 31578
      Root Prefixes with depth 4405
      Root Prefixes with depth 579
      Root Prefixes with depth 635
      Root Prefixes with depth 78

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 ASes65215       ASes visible in only one AS path39744
    Origin only ASes54828         Origin ASs announced via a single AS path38949
    Transit only ASes350       Originating AS ATOM count64865
    Mixed ASes10037         Originating AS ATOM compression0.0793
    Multi-Origin Prefixes8843    
    ASes originating a single prefix23558    
    Average entries per origin AS12.6099         Maximum entries for an origin AS (AS61317)1381
    Average address range span for an origin AS43791.1782         Maximum address range for an origin AS (AS4134)115842560

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 Paths3729529       Unique AS prepended Paths3979830
AS Paths used in FIB105750       AS Paths using prepending969093
    AS paths associated with a single FIB entry49622       AS Paths using private ASs1224
    Average AS path length5.4858         Maximum AS Path length15
    Average address weighted AS path length6.9496         Maximum prepended AS Path length46
    Average entries per AS Path0.2193       Average entries per FIB AS Path7.7346
    AS Paths per origin AS57.4968       FIB AS Paths per origin AS1.6303
      AS PATH ATOM compression0.1293    

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 /811       % Prefix /80.00
    Prefix count /911       % Prefix /90.00
    Prefix count /1037       % Prefix /100.00
    Prefix count /11100       % Prefix /110.01
    Prefix count /12299       % Prefix /120.04
    Prefix count /13576       % Prefix /130.07
    Prefix count /141156       % Prefix /140.14
    Prefix count /151977       % Prefix /150.24
    Prefix count /1613452       % Prefix /161.64
    Prefix count /178291       % Prefix /171.01
    Prefix count /1814388       % Prefix /181.76
    Prefix count /1926738       % Prefix /193.27
    Prefix count /2041995       % Prefix /205.13
    Prefix count /2150678       % Prefix /216.20
    Prefix count /22101233       % Prefix /2212.38
    Prefix count /2382645       % Prefix /2310.10
    Prefix count /24460661       % Prefix /2456.32
    Prefix count /251729       % Prefix /250.21
    Prefix count /261544       % Prefix /260.19
    Prefix count /271644       % Prefix /270.20
    Prefix count /281190       % Prefix /280.15
    Prefix count /293707       % Prefix /290.45
    Prefix count /30414       % Prefix /300.05
    Prefix count /3191       % Prefix /310.01
    Prefix count /323371       % Prefix /320.41

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 /811       % Prefix /80.00
    Prefix count /96       % Prefix /90.00
    Prefix count /1037       % Prefix /100.01
    Prefix count /1193       % Prefix /110.03
    Prefix count /12259       % Prefix /120.07
    Prefix count /13471       % Prefix /130.13
    Prefix count /14974       % Prefix /140.27
    Prefix count /151578       % Prefix /150.44
    Prefix count /169831       % Prefix /162.71
    Prefix count /174416       % Prefix /171.22
    Prefix count /187344       % Prefix /182.03
    Prefix count /1915001       % Prefix /194.14
    Prefix count /2019014       % Prefix /205.24
    Prefix count /2121797       % Prefix /216.01
    Prefix count /2252203       % Prefix /2214.40
    Prefix count /2330984       % Prefix /238.55
    Prefix count /24197981       % Prefix /2454.61
    Prefix count /2518       % Prefix /250.00
    Prefix count /267       % Prefix /260.00
    Prefix count /2715       % Prefix /270.00
    Prefix count /2815       % Prefix /280.00
    Prefix count /298       % Prefix /290.00
    Prefix count /307       % Prefix /300.00
    Prefix count /319       % Prefix /310.00
    Prefix count /32471       % Prefix /320.13

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 1229399285       % Addresses at AS distance 15.8
    Addresses at AS distance 2144621190       % Addresses at AS distance 23.6
    Addresses at AS distance 3857845819       % Addresses at AS distance 321.6
    Addresses at AS distance 41481551896       % Addresses at AS distance 437.3
    Addresses at AS distance 5869646954       % Addresses at AS distance 521.9
    Addresses at AS distance 6314555137       % Addresses at AS distance 67.9
    Addresses at AS distance 748645688       % Addresses at AS distance 71.2
    Addresses at AS distance 813646112       % Addresses at AS distance 80.3
    Addresses at AS distance 97526144       % Addresses at AS distance 90.2
    Addresses at AS distance 10129792       % Addresses at AS distance 100.0
    Addresses at AS distance 1115360       % Addresses at AS distance 110.0
    Addresses at AS distance 120       % 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
     
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 hops229399285       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops374020475       % Addresses reachable within 2 AS hops9
    Addresses reachable within 3 AS hops1231866294       % Addresses reachable within 3 AS hops31
    Addresses reachable within 4 AS hops2713418190       % Addresses reachable within 4 AS hops68
    Addresses reachable within 5 AS hops3583065144       % Addresses reachable within 5 AS hops90
    Addresses reachable within 6 AS hops3897620281       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops3946265969       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3959912081       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3967438225       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3967568017       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3967583377       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops3967583377       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops3967583633       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops3967583633       % 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 hops42       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops15621       % ASes reachable at 2 AS hops23
    ASes reachable at 3 AS hops38037       % ASes reachable at 3 AS hops58
    ASes reachable at 4 AS hops9430       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1484       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops322       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops167       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops102       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops9       % 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 hops1       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops43       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops15664       Cumulative % ASes by AS hops 224.0
    ASes reachable by 3 AS hops53701       Cumulative % ASes by AS hops 382.3
    ASes reachable by 4 AS hops63131       Cumulative % ASes by AS hops 496.8
    ASes reachable by 5 AS hops64615       Cumulative % ASes by AS hops 599.1
    ASes reachable by 6 AS hops64937       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops65104       Cumulative % ASes by AS hops 799.8
    ASes reachable by 8 AS hops65206       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops65215       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops65215       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops65215       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops65215       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops65215       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops65215       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 /67       % 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 /80.0007
    AS's announcing span of /983       % AS's announcing span of /90.0013
    AS's announcing span of /10111       % AS's announcing span of /100.0017
    AS's announcing span of /11179       % AS's announcing span of /110.0028
    AS's announcing span of /12234       % AS's announcing span of /120.0036
    AS's announcing span of /13457       % AS's announcing span of /130.0071
    AS's announcing span of /14859       % AS's announcing span of /140.0133
    AS's announcing span of /151792       % AS's announcing span of /150.0278
    AS's announcing span of /161834       % AS's announcing span of /160.0284
    AS's announcing span of /172326       % AS's announcing span of /170.0361
    AS's announcing span of /183680       % AS's announcing span of /180.0570
    AS's announcing span of /194884       % AS's announcing span of /190.0757
    AS's announcing span of /206736       % AS's announcing span of /200.1044
    AS's announcing span of /218945       % AS's announcing span of /210.1387
    AS's announcing span of /2210991       % AS's announcing span of /220.1704
    AS's announcing span of /236556       % AS's announcing span of /230.1016
    AS's announcing span of /2414676       % AS's announcing span of /240.2275
    AS's announcing span of /2519       % AS's announcing span of /250.0003
    AS's announcing span of /268       % AS's announcing span of /260.0001
    AS's announcing span of /2716       % AS's announcing span of /270.0002
    AS's announcing span of /2822       % 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 /302       % 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 /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 Count155607
Average AS Connectivity Degree (311214/65215)4.7721
Average AS Connectivity IN:OUT Degree0.2776
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 Path446306Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path434819Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin301208Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation301295Report (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 Fri Jun 7 18:00:00 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.


Footnote