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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Wed Sep 19 14:20:00 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)769051   Change in FIB Size-35   Change (%)-0.005
    All BGP entries (RIB)29797529
    RIB/FIB ratio (29797529/769051)38.7458
      Valid entries29797529
      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)2960290992
    Total address space advertised (prefix length)0.53690815
    Percentage of IPv4 space advertised (2960290992/4294967295)68.924646
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3849
    Average address span (as prefix size)20.0897
Average prefix length22.7592

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 aggregates526539       Specifics as % of FIB entries (526539/769051)68.4661
    Specifics as % of address span (2064379101/2960290992)69.7357    
    Specifics where AS prepended Path matches aggregate193767         AS-P_Path-Match % (193767/526539)36.80
    AS Path matches aggregate203831         AS-Path-Match % (203831/526539)38.7115
    AS Origin matches aggregate328290         AS-Origin-Match % (328290/526539)62.3487
    Root Prefixes242512
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0208565
      Root Prefixes with depth 127010
      Root Prefixes with depth 25494
      Root Prefixes with depth 31095
      Root Prefixes with depth 4278
      Root Prefixes with depth 554
      Root Prefixes with depth 610
      Root Prefixes with depth 75
      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 ASes62596       ASes visible in only one AS path38982
    Origin only ASes52624         Origin ASs announced via a single AS path38018
    Transit only ASes335       Originating AS ATOM count62261
    Mixed ASes9637         Originating AS ATOM compression0.0810
    Multi-Origin Prefixes5772    
    ASes originating a single prefix22984    
    Average entries per origin AS12.3521         Maximum entries for an origin AS (AS262589)144
    Average address range span for an origin AS47546.4736         Maximum address range for an origin AS (AS33363)1080100864

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 Paths3558070       Unique AS prepended Paths3796093
AS Paths used in FIB97186       AS Paths using prepending906071
    AS paths associated with a single FIB entry45216       AS Paths using private ASs1432
    Average AS path length3.7868         Maximum AS Path length15
    Average address weighted AS path length4.5604         Maximum prepended AS Path length46
    Average entries per AS Path0.2161       Average entries per FIB AS Path7.9132
    AS Paths per origin AS57.1477       FIB AS Paths per origin AS1.5609
      AS PATH ATOM compression0.1264    

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 /21       % Prefix /20.00
    Prefix count /30       % Prefix /30.00
    Prefix count /40       % Prefix /40.00
    Prefix count /50       % Prefix /50.00
    Prefix count /60       % Prefix /60.00
    Prefix count /70       % Prefix /70.00
    Prefix count /814       % Prefix /80.00
    Prefix count /911       % Prefix /90.00
    Prefix count /1036       % Prefix /100.00
    Prefix count /1198       % Prefix /110.01
    Prefix count /12292       % Prefix /120.04
    Prefix count /13569       % Prefix /130.07
    Prefix count /141118       % Prefix /140.15
    Prefix count /151928       % Prefix /150.25
    Prefix count /1613503       % Prefix /161.76
    Prefix count /178193       % Prefix /171.07
    Prefix count /1814164       % Prefix /181.84
    Prefix count /1926137       % Prefix /193.40
    Prefix count /2041257       % Prefix /205.36
    Prefix count /2149274       % Prefix /216.41
    Prefix count /2295160       % Prefix /2212.37
    Prefix count /2377975       % Prefix /2310.14
    Prefix count /24428633       % Prefix /2455.74
    Prefix count /251790       % Prefix /250.23
    Prefix count /261469       % Prefix /260.19
    Prefix count /271170       % Prefix /270.15
    Prefix count /28737       % Prefix /280.10
    Prefix count /291495       % Prefix /290.19
    Prefix count /301008       % Prefix /300.13
    Prefix count /31442       % Prefix /310.06
    Prefix count /322577       % Prefix /320.34

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 /21       % Prefix /20.00
    Prefix count /30       % Prefix /30.00
    Prefix count /40       % Prefix /40.00
    Prefix count /50       % Prefix /50.00
    Prefix count /60       % Prefix /60.00
    Prefix count /70       % Prefix /70.00
    Prefix count /812       % Prefix /80.00
    Prefix count /93       % Prefix /90.00
    Prefix count /1019       % Prefix /100.01
    Prefix count /1143       % Prefix /110.02
    Prefix count /12145       % Prefix /120.06
    Prefix count /13260       % Prefix /130.11
    Prefix count /14585       % Prefix /140.24
    Prefix count /15949       % Prefix /150.39
    Prefix count /167775       % Prefix /163.21
    Prefix count /172807       % Prefix /171.16
    Prefix count /184602       % Prefix /181.90
    Prefix count /1910684       % Prefix /194.41
    Prefix count /2011800       % Prefix /204.87
    Prefix count /2114761       % Prefix /216.09
    Prefix count /2236263       % Prefix /2214.95
    Prefix count /2320315       % Prefix /238.38
    Prefix count /24131014       % Prefix /2454.02
    Prefix count /2521       % Prefix /250.01
    Prefix count /269       % Prefix /260.00
    Prefix count /2716       % Prefix /270.01
    Prefix count /288       % Prefix /280.00
    Prefix count /293       % Prefix /290.00
    Prefix count /30317       % Prefix /300.13
    Prefix count /310       % Prefix /310.00
    Prefix count /32100       % Prefix /320.04

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 1303563744       % Addresses at AS distance 141.6
    Addresses at AS distance 22170008376       % Addresses at AS distance 2297.4
    Addresses at AS distance 32206642450       % Addresses at AS distance 3302.4
    Addresses at AS distance 4271636651       % Addresses at AS distance 437.2
    Addresses at AS distance 540791021       % Addresses at AS distance 55.6
    Addresses at AS distance 614600827       % Addresses at AS distance 62.0
    Addresses at AS distance 710586960       % Addresses at AS distance 71.5
    Addresses at AS distance 86812160       % Addresses at AS distance 80.9
    Addresses at AS distance 927648       % Addresses at AS distance 90.0
    Addresses at AS distance 10256       % Addresses at AS distance 100.0
    Addresses at AS distance 110       % 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
     
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 hops303563744       % Addresses reachable within 1 AS hops41
    Addresses reachable within 2 AS hops2473572120       % Addresses reachable within 2 AS hops338
    Addresses reachable within 3 AS hops385247274       % Addresses reachable within 3 AS hops52
    Addresses reachable within 4 AS hops656883925       % Addresses reachable within 4 AS hops90
    Addresses reachable within 5 AS hops697674946       % Addresses reachable within 5 AS hops95
    Addresses reachable within 6 AS hops712275773       % Addresses reachable within 6 AS hops97
    Addresses reachable within 7 AS hops722862733       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops729674893       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops729702541       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops729702797       % Addresses reachable within 10 AS hops100
    Addresses reachable within 11 AS hops729702797       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops729702797       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops729702797       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops729702797       % 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 hops45       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops18233       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops34682       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops7816       % ASes reachable at 4 AS hops12
    ASes reachable at 5 AS hops1308       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops282       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops144       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops83       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops2       % 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 hops46       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops18279       Cumulative % ASes by AS hops 229.2
    ASes reachable by 3 AS hops52961       Cumulative % ASes by AS hops 384.6
    ASes reachable by 4 AS hops60777       Cumulative % ASes by AS hops 497.1
    ASes reachable by 5 AS hops62085       Cumulative % ASes by AS hops 599.2
    ASes reachable by 6 AS hops62367       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops62511       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops62594       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops62596       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops62596       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops62596       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops62596       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops62596       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops62596       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 /11       % AS's announcing span of /10.0000
    AS's announcing span of /20       % AS's announcing span of /20.0000
    AS's announcing span of /30       % AS's announcing span of /30.0000
    AS's announcing span of /40       % 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 /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 /975       % AS's announcing span of /90.0012
    AS's announcing span of /10119       % AS's announcing span of /100.0019
    AS's announcing span of /11172       % AS's announcing span of /110.0028
    AS's announcing span of /12223       % AS's announcing span of /120.0036
    AS's announcing span of /13459       % AS's announcing span of /130.0074
    AS's announcing span of /14845       % AS's announcing span of /140.0136
    AS's announcing span of /151734       % AS's announcing span of /150.0280
    AS's announcing span of /161841       % AS's announcing span of /160.0297
    AS's announcing span of /172268       % AS's announcing span of /170.0366
    AS's announcing span of /183670       % AS's announcing span of /180.0592
    AS's announcing span of /194811       % AS's announcing span of /190.0777
    AS's announcing span of /206346       % AS's announcing span of /200.1025
    AS's announcing span of /218431       % AS's announcing span of /210.1361
    AS's announcing span of /2210187       % AS's announcing span of /220.1645
    AS's announcing span of /236289       % AS's announcing span of /230.1015
    AS's announcing span of /2414299       % AS's announcing span of /240.2308
    AS's announcing span of /2521       % AS's announcing span of /250.0003
    AS's announcing span of /2610       % AS's announcing span of /260.0002
    AS's announcing span of /2717       % AS's announcing span of /270.0003
    AS's announcing span of /2819       % AS's announcing span of /280.0003
    AS's announcing span of /299       % AS's announcing span of /290.0001
    AS's announcing span of /307       % 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 /327       % 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 Count148334
Average AS Connectivity Degree (296668/62596)4.7394
Average AS Connectivity IN:OUT Degree0.2745
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 Path406588Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path397431Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin281181Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation281221Report (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 Wed Sep 19 14:20:00 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