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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Tue Feb 7 00:00:00 2023 (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)963921   Change in FIB Size29   Change (%)0.003
    All BGP entries (RIB)26157886
    RIB/FIB ratio (26157886/963921)27.1370
      Valid entries26157886
      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)3067082693
    Total address space advertised (prefix length)0.48578008
    Percentage of IPv4 space advertised (3067082693/4294967295)71.411084
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3182
    Average address span (as prefix size)20.3647
Average prefix length22.8585

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 aggregates519404       Specifics as % of FIB entries (519404/963921)53.8845
    Specifics as % of address span (1165682394/3067082693)38.0062    
    Specifics where AS prepended Path matches aggregate223134         AS-P_Path-Match % (223134/519404)42.96
    AS Path matches aggregate240529         AS-Path-Match % (240529/519404)46.3087
    AS Origin matches aggregate402596         AS-Origin-Match % (402596/519404)77.5111
    Root Prefixes444517
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0387354
      Root Prefixes with depth 145588
      Root Prefixes with depth 29311
      Root Prefixes with depth 31667
      Root Prefixes with depth 4453
      Root Prefixes with depth 599
      Root Prefixes with depth 633
      Root Prefixes with depth 711
      Root Prefixes with depth 81

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 ASes74680       ASes visible in only one AS path44945
    Origin only ASes62832         Origin ASs announced via a single AS path43950
    Transit only ASes528       Originating AS ATOM count74152
    Mixed ASes11320         Originating AS ATOM compression0.0769
    Multi-Origin Prefixes10916    
    ASes originating a single prefix25735    
    Average entries per origin AS12.9993         Maximum entries for an origin AS (AS58224)1845
    Average address range span for an origin AS41362.1034         Maximum address range for an origin AS (AS749)210705408

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 Paths3048744       Unique AS prepended Paths3276807
AS Paths used in FIB120058       AS Paths using prepending830741
    AS paths associated with a single FIB entry55697       AS Paths using private ASs280
    Average AS path length4.8255       Number of Prefixes with Selected AS Prepending Paths131473
      Maximum AS Path length14       Number of Prefixes with AS Prepending Paths131473
    Average address weighted AS path length6.0836       Maximum prepended AS Path length163
    Average entries per AS Path0.3162       Average entries per FIB AS Path8.0288
    AS Paths per origin AS41.1148       FIB AS Paths per origin AS1.6191
      AS PATH ATOM compression0.1246    

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 /817       % Prefix /80.00
    Prefix count /913       % Prefix /90.00
    Prefix count /1039       % Prefix /100.00
    Prefix count /11103       % Prefix /110.01
    Prefix count /12300       % Prefix /120.03
    Prefix count /13581       % Prefix /130.06
    Prefix count /141214       % Prefix /140.13
    Prefix count /152124       % Prefix /150.22
    Prefix count /1613662       % Prefix /161.42
    Prefix count /178557       % Prefix /170.89
    Prefix count /1814381       % Prefix /181.49
    Prefix count /1926258       % Prefix /192.72
    Prefix count /2045739       % Prefix /204.75
    Prefix count /2154483       % Prefix /215.65
    Prefix count /22113573       % Prefix /2211.78
    Prefix count /23106088       % Prefix /2311.01
    Prefix count /24573990       % Prefix /2459.55
    Prefix count /25475       % Prefix /250.05
    Prefix count /26609       % Prefix /260.06
    Prefix count /27994       % Prefix /270.10
    Prefix count /2874       % Prefix /280.01
    Prefix count /29111       % Prefix /290.01
    Prefix count /3027       % Prefix /300.00
    Prefix count /3130       % Prefix /310.00
    Prefix count /32479       % Prefix /320.05

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 /817       % Prefix /80.00
    Prefix count /99       % Prefix /90.00
    Prefix count /1039       % Prefix /100.01
    Prefix count /1197       % Prefix /110.02
    Prefix count /12264       % Prefix /120.06
    Prefix count /13480       % Prefix /130.11
    Prefix count /141017       % Prefix /140.23
    Prefix count /151635       % Prefix /150.37
    Prefix count /1610247       % Prefix /162.31
    Prefix count /174481       % Prefix /171.01
    Prefix count /186919       % Prefix /181.56
    Prefix count /1915035       % Prefix /193.38
    Prefix count /2019367       % Prefix /204.36
    Prefix count /2122853       % Prefix /215.14
    Prefix count /2259411       % Prefix /2213.37
    Prefix count /2341547       % Prefix /239.35
    Prefix count /24261084       % Prefix /2458.73
    Prefix count /251       % Prefix /250.00
    Prefix count /263       % Prefix /260.00
    Prefix count /273       % Prefix /270.00
    Prefix count /281       % Prefix /280.00
    Prefix count /291       % Prefix /290.00
    Prefix count /301       % Prefix /300.00
    Prefix count /314       % Prefix /310.00
    Prefix count /321       % Prefix /320.00

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 1177632245       % Addresses at AS distance 14.2
    Addresses at AS distance 2271814510       % Addresses at AS distance 26.4
    Addresses at AS distance 32076999080       % Addresses at AS distance 349.1
    Addresses at AS distance 41229227234       % Addresses at AS distance 429.0
    Addresses at AS distance 5364567058       % Addresses at AS distance 58.6
    Addresses at AS distance 670352544       % Addresses at AS distance 61.7
    Addresses at AS distance 727507200       % Addresses at AS distance 70.6
    Addresses at AS distance 813428224       % Addresses at AS distance 80.3
    Addresses at AS distance 9394240       % Addresses at AS distance 90.0
    Addresses at AS distance 10811776       % Addresses at AS distance 100.0
    Addresses at AS distance 1125856       % Addresses at AS distance 110.0
    Addresses at AS distance 125120       % Addresses at AS distance 120.0
    Addresses at AS distance 130       % Addresses at AS distance 130.0
     
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 hops177632245       % Addresses reachable within 1 AS hops4
    Addresses reachable within 2 AS hops449446755       % Addresses reachable within 2 AS hops10
    Addresses reachable within 3 AS hops2526445835       % Addresses reachable within 3 AS hops59
    Addresses reachable within 4 AS hops3755673069       % Addresses reachable within 4 AS hops88
    Addresses reachable within 5 AS hops4120240127       % Addresses reachable within 5 AS hops97
    Addresses reachable within 6 AS hops4190592671       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops4218099871       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4231528095       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4231922335       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4232734111       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4232759967       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4232765087       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops4232765087       % Addresses reachable within 13 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 hops31       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops16579       % ASes reachable at 2 AS hops22
    ASes reachable at 3 AS hops44429       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops10970       % ASes reachable at 4 AS hops14
    ASes reachable at 5 AS hops1995       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops468       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops164       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops34       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops8       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops1       % 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
     
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 hops32       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops16611       Cumulative % ASes by AS hops 222.2
    ASes reachable by 3 AS hops61040       Cumulative % ASes by AS hops 381.7
    ASes reachable by 4 AS hops72010       Cumulative % ASes by AS hops 496.4
    ASes reachable by 5 AS hops74005       Cumulative % ASes by AS hops 599.1
    ASes reachable by 6 AS hops74473       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops74637       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops74671       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops74679       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops74680       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops74680       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops74680       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops74680       Cumulative % ASes by AS hops 13100.0

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 /60.0001
    AS's announcing span of /725       % AS's announcing span of /70.0003
    AS's announcing span of /843       % AS's announcing span of /80.0006
    AS's announcing span of /979       % AS's announcing span of /90.0011
    AS's announcing span of /10103       % AS's announcing span of /100.0014
    AS's announcing span of /11170       % AS's announcing span of /110.0023
    AS's announcing span of /12239       % AS's announcing span of /120.0032
    AS's announcing span of /13425       % AS's announcing span of /130.0058
    AS's announcing span of /14839       % AS's announcing span of /140.0114
    AS's announcing span of /151722       % AS's announcing span of /150.0233
    AS's announcing span of /161864       % AS's announcing span of /160.0252
    AS's announcing span of /172450       % AS's announcing span of /170.0332
    AS's announcing span of /183862       % AS's announcing span of /180.0523
    AS's announcing span of /195116       % AS's announcing span of /190.0693
    AS's announcing span of /207725       % AS's announcing span of /200.1046
    AS's announcing span of /2110385       % AS's announcing span of /210.1406
    AS's announcing span of /2212344       % AS's announcing span of /220.1672
    AS's announcing span of /238799       % AS's announcing span of /230.1192
    AS's announcing span of /2417621       % AS's announcing span of /240.2386
    AS's announcing span of /253       % AS's announcing span of /250.0000
    AS's announcing span of /263       % AS's announcing span of /260.0000
    AS's announcing span of /275       % AS's announcing span of /270.0001
    AS's announcing span of /282       % AS's announcing span of /280.0000
    AS's announcing span of /291       % AS's announcing span of /290.0000
    AS's announcing span of /300       % 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 /323       % 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 Count174495
Average AS Connectivity Degree (348990/74680)4.6731
Average AS Connectivity IN:OUT Degree0.2696
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 Path525794Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path506727Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin354867Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation354916Report (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 Feb 7 00:00:00 2023 (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