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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Wed Nov 14 04:40:00 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)780826   Change in FIB Size330   Change (%)0.042
    All BGP entries (RIB)31455656
    RIB/FIB ratio (31455656/780826)40.2851
      Valid entries31455656
      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)2862136920
    Total address space advertised (prefix length)0.58555446
    Percentage of IPv4 space advertised (2862136920/4294967295)66.639318
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3666
    Average address span (as prefix size)20.1604
Average prefix length22.7678

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 aggregates431919       Specifics as % of FIB entries (431919/780826)55.3157
    Specifics as % of address span (1116904734/2862136920)39.0235    
    Specifics where AS prepended Path matches aggregate183365         AS-P_Path-Match % (183365/431919)42.45
    AS Path matches aggregate192463         AS-Path-Match % (192463/431919)44.5600
    AS Origin matches aggregate332189         AS-Origin-Match % (332189/431919)76.9100
    Root Prefixes348907
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0300757
      Root Prefixes with depth 138320
      Root Prefixes with depth 27803
      Root Prefixes with depth 31508
      Root Prefixes with depth 4406
      Root Prefixes with depth 578
      Root Prefixes with depth 627
      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 ASes63161       ASes visible in only one AS path38755
    Origin only ASes53078         Origin ASs announced via a single AS path37760
    Transit only ASes339       Originating AS ATOM count62822
    Mixed ASes9744         Originating AS ATOM compression0.0805
    Multi-Origin Prefixes6711    
    ASes originating a single prefix23115    
    Average entries per origin AS12.4292         Maximum entries for an origin AS (AS264668)148
    Average address range span for an origin AS45559.4683         Maximum address range for an origin AS (AS4134)116652800

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 Paths3751534       Unique AS prepended Paths4002478
AS Paths used in FIB102222       AS Paths using prepending962033
    AS paths associated with a single FIB entry48257       AS Paths using private ASs1309
    Average AS path length3.7901         Maximum AS Path length14
    Average address weighted AS path length4.7562         Maximum prepended AS Path length46
    Average entries per AS Path0.2081       Average entries per FIB AS Path7.6385
    AS Paths per origin AS59.7169       FIB AS Paths per origin AS1.6272
      AS PATH ATOM compression0.1309    

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 /12295       % Prefix /120.04
    Prefix count /13572       % Prefix /130.07
    Prefix count /141141       % Prefix /140.15
    Prefix count /151959       % Prefix /150.25
    Prefix count /1613531       % Prefix /161.73
    Prefix count /178224       % Prefix /171.05
    Prefix count /1814243       % Prefix /181.82
    Prefix count /1926299       % Prefix /193.37
    Prefix count /2041401       % Prefix /205.30
    Prefix count /2149771       % Prefix /216.37
    Prefix count /2296503       % Prefix /2212.36
    Prefix count /2379633       % Prefix /2310.20
    Prefix count /24436006       % Prefix /2455.84
    Prefix count /251782       % Prefix /250.23
    Prefix count /261558       % Prefix /260.20
    Prefix count /271347       % Prefix /270.17
    Prefix count /28873       % Prefix /280.11
    Prefix count /291633       % Prefix /290.21
    Prefix count /301038       % Prefix /300.13
    Prefix count /31413       % Prefix /310.05
    Prefix count /322444       % Prefix /320.31

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 /12255       % Prefix /120.07
    Prefix count /13466       % Prefix /130.13
    Prefix count /14962       % Prefix /140.28
    Prefix count /151561       % Prefix /150.45
    Prefix count /169941       % Prefix /162.85
    Prefix count /174389       % Prefix /171.26
    Prefix count /187332       % Prefix /182.10
    Prefix count /1914907       % Prefix /194.27
    Prefix count /2018752       % Prefix /205.37
    Prefix count /2121633       % Prefix /216.20
    Prefix count /2249561       % Prefix /2214.20
    Prefix count /2329806       % Prefix /238.54
    Prefix count /24188285       % Prefix /2453.96
    Prefix count /2524       % Prefix /250.01
    Prefix count /2612       % Prefix /260.00
    Prefix count /2718       % Prefix /270.01
    Prefix count /2810       % Prefix /280.00
    Prefix count /2913       % Prefix /290.00
    Prefix count /30322       % Prefix /300.09
    Prefix count /319       % Prefix /310.00
    Prefix count /32502       % Prefix /320.14

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 1303866260       % Addresses at AS distance 17.6
    Addresses at AS distance 22183299601       % Addresses at AS distance 254.9
    Addresses at AS distance 31139796009       % Addresses at AS distance 328.6
    Addresses at AS distance 4275045783       % Addresses at AS distance 46.9
    Addresses at AS distance 543867876       % Addresses at AS distance 51.1
    Addresses at AS distance 614964957       % Addresses at AS distance 60.4
    Addresses at AS distance 711051088       % Addresses at AS distance 70.3
    Addresses at AS distance 87116288       % Addresses at AS distance 80.2
    Addresses at AS distance 926880       % Addresses at AS distance 90.0
    Addresses at AS distance 105888       % Addresses at AS distance 100.0
    Addresses at AS distance 111024       % 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
     
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 hops303866260       % Addresses reachable within 1 AS hops7
    Addresses reachable within 2 AS hops2487165861       % Addresses reachable within 2 AS hops62
    Addresses reachable within 3 AS hops3626961870       % Addresses reachable within 3 AS hops91
    Addresses reachable within 4 AS hops3902007653       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3945875529       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3960840486       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3971891574       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3979007862       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3979034742       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3979040630       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3979041654       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops3979041654       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3979041654       % 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 hops46       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops18295       % ASes reachable at 2 AS hops28
    ASes reachable at 3 AS hops35153       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops7798       % ASes reachable at 4 AS hops12
    ASes reachable at 5 AS hops1354       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops266       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops155       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops87       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops5       % 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 hops47       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops18342       Cumulative % ASes by AS hops 229.0
    ASes reachable by 3 AS hops53495       Cumulative % ASes by AS hops 384.7
    ASes reachable by 4 AS hops61293       Cumulative % ASes by AS hops 497.0
    ASes reachable by 5 AS hops62647       Cumulative % ASes by AS hops 599.2
    ASes reachable by 6 AS hops62913       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops63068       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops63155       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops63160       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops63161       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops63161       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops63161       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops63161       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 /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 /841       % AS's announcing span of /80.0007
    AS's announcing span of /973       % AS's announcing span of /90.0012
    AS's announcing span of /10117       % AS's announcing span of /100.0019
    AS's announcing span of /11173       % AS's announcing span of /110.0028
    AS's announcing span of /12230       % AS's announcing span of /120.0037
    AS's announcing span of /13453       % AS's announcing span of /130.0072
    AS's announcing span of /14852       % AS's announcing span of /140.0136
    AS's announcing span of /151731       % AS's announcing span of /150.0277
    AS's announcing span of /161862       % AS's announcing span of /160.0298
    AS's announcing span of /172278       % AS's announcing span of /170.0364
    AS's announcing span of /183698       % AS's announcing span of /180.0592
    AS's announcing span of /194802       % AS's announcing span of /190.0768
    AS's announcing span of /206396       % AS's announcing span of /200.1023
    AS's announcing span of /218592       % AS's announcing span of /210.1375
    AS's announcing span of /2210380       % AS's announcing span of /220.1661
    AS's announcing span of /236323       % AS's announcing span of /230.1012
    AS's announcing span of /2414376       % AS's announcing span of /240.2300
    AS's announcing span of /2522       % AS's announcing span of /250.0004
    AS's announcing span of /269       % AS's announcing span of /260.0001
    AS's announcing span of /2718       % AS's announcing span of /270.0003
    AS's announcing span of /2818       % 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 /302       % AS's announcing span of /300.0000
    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 Count150413
Average AS Connectivity Degree (300826/63161)4.7628
Average AS Connectivity IN:OUT Degree0.2775
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 Path426703Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path418656Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin286172Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation286259Report (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 Nov 14 04:40:00 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