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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Tue Mar 19 06:00:00 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)802636   Change in FIB Size221   Change (%)0.028
    All BGP entries (RIB)30630617
    RIB/FIB ratio (30630617/802636)38.1625
      Valid entries30630617
      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)2847203817
    Total address space advertised (prefix length)0.59310137
    Percentage of IPv4 space advertised (2847203817/4294967295)66.291630
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3547
    Average address span (as prefix size)20.2076
Average prefix length22.7929

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 aggregates444686       Specifics as % of FIB entries (444686/802636)55.4032
    Specifics as % of address span (1122118452/2847203817)39.4112    
    Specifics where AS prepended Path matches aggregate175029         AS-P_Path-Match % (175029/444686)39.36
    AS Path matches aggregate188036         AS-Path-Match % (188036/444686)42.2851
    AS Origin matches aggregate335178         AS-Origin-Match % (335178/444686)75.3741
    Root Prefixes357950
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0308370
      Root Prefixes with depth 139147
      Root Prefixes with depth 28325
      Root Prefixes with depth 31594
      Root Prefixes with depth 4396
      Root Prefixes with depth 581
      Root Prefixes with depth 629
      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 ASes64465       ASes visible in only one AS path38531
    Origin only ASes54160         Origin ASs announced via a single AS path37847
    Transit only ASes346       Originating AS ATOM count64119
    Mixed ASes9959         Originating AS ATOM compression0.0799
    Multi-Origin Prefixes8505    
    ASes originating a single prefix23340    
    Average entries per origin AS12.5179         Maximum entries for an origin AS (AS61317)735
    Average address range span for an origin AS44404.9941         Maximum address range for an origin AS (AS4134)116072448

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 Paths3646797       Unique AS prepended Paths3891507
AS Paths used in FIB108753       AS Paths using prepending931224
    AS paths associated with a single FIB entry51889       AS Paths using private ASs1351
    Average AS path length5.3111         Maximum AS Path length14
    Average address weighted AS path length6.9044         Maximum prepended AS Path length46
    Average entries per AS Path0.2201       Average entries per FIB AS Path7.3804
    AS Paths per origin AS56.8755       FIB AS Paths per origin AS1.6961
      AS PATH ATOM compression0.1355    

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 /11100       % Prefix /110.01
    Prefix count /12296       % Prefix /120.04
    Prefix count /13572       % Prefix /130.07
    Prefix count /141162       % Prefix /140.14
    Prefix count /151982       % Prefix /150.25
    Prefix count /1613605       % Prefix /161.70
    Prefix count /178265       % Prefix /171.03
    Prefix count /1814392       % Prefix /181.79
    Prefix count /1926650       % Prefix /193.32
    Prefix count /2041737       % Prefix /205.20
    Prefix count /2149476       % Prefix /216.16
    Prefix count /2299833       % Prefix /2212.44
    Prefix count /2381899       % Prefix /2310.20
    Prefix count /24450404       % Prefix /2456.12
    Prefix count /251840       % Prefix /250.23
    Prefix count /261606       % Prefix /260.20
    Prefix count /271458       % Prefix /270.18
    Prefix count /281146       % Prefix /280.14
    Prefix count /292101       % Prefix /290.26
    Prefix count /30498       % Prefix /300.06
    Prefix count /31105       % Prefix /310.01
    Prefix count /323451       % Prefix /320.43

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 /1193       % Prefix /110.03
    Prefix count /12256       % Prefix /120.07
    Prefix count /13467       % Prefix /130.13
    Prefix count /14978       % Prefix /140.27
    Prefix count /151580       % Prefix /150.44
    Prefix count /169965       % Prefix /162.78
    Prefix count /174421       % Prefix /171.24
    Prefix count /187354       % Prefix /182.05
    Prefix count /1914966       % Prefix /194.18
    Prefix count /2018882       % Prefix /205.28
    Prefix count /2121820       % Prefix /216.10
    Prefix count /2251353       % Prefix /2214.35
    Prefix count /2330776       % Prefix /238.60
    Prefix count /24194365       % Prefix /2454.30
    Prefix count /2519       % Prefix /250.01
    Prefix count /268       % Prefix /260.00
    Prefix count /2715       % Prefix /270.00
    Prefix count /2812       % Prefix /280.00
    Prefix count /2911       % Prefix /290.00
    Prefix count /3020       % Prefix /300.01
    Prefix count /319       % Prefix /310.00
    Prefix count /32527       % 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 1229960642       % Addresses at AS distance 15.8
    Addresses at AS distance 2378957075       % Addresses at AS distance 29.5
    Addresses at AS distance 3831383589       % Addresses at AS distance 320.9
    Addresses at AS distance 41029849044       % Addresses at AS distance 425.9
    Addresses at AS distance 51045493738       % Addresses at AS distance 526.3
    Addresses at AS distance 6371301173       % Addresses at AS distance 69.4
    Addresses at AS distance 749477392       % Addresses at AS distance 71.2
    Addresses at AS distance 816610336       % Addresses at AS distance 80.4
    Addresses at AS distance 910005248       % Addresses at AS distance 90.3
    Addresses at AS distance 106260224       % Addresses at AS distance 100.2
    Addresses at AS distance 1120992       % Addresses at AS distance 110.0
    Addresses at AS distance 122560       % Addresses at AS distance 120.0
    Addresses at AS distance 13256       % 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 hops229960642       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops608917717       % Addresses reachable within 2 AS hops15
    Addresses reachable within 3 AS hops1440301306       % Addresses reachable within 3 AS hops36
    Addresses reachable within 4 AS hops2470150350       % Addresses reachable within 4 AS hops62
    Addresses reachable within 5 AS hops3515644088       % Addresses reachable within 5 AS hops88
    Addresses reachable within 6 AS hops3886945261       % Addresses reachable within 6 AS hops97
    Addresses reachable within 7 AS hops3936422653       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3953032989       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3963038237       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3969298461       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3969319453       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops3969322013       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops3969322269       % 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 hops43       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops15646       % ASes reachable at 2 AS hops24
    ASes reachable at 3 AS hops37767       % ASes reachable at 3 AS hops58
    ASes reachable at 4 AS hops8959       % ASes reachable at 4 AS hops13
    ASes reachable at 5 AS hops1473       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops330       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops153       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops89       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops3       % 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 hops44       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops15690       Cumulative % ASes by AS hops 224.3
    ASes reachable by 3 AS hops53457       Cumulative % ASes by AS hops 382.9
    ASes reachable by 4 AS hops62416       Cumulative % ASes by AS hops 496.8
    ASes reachable by 5 AS hops63889       Cumulative % ASes by AS hops 599.1
    ASes reachable by 6 AS hops64219       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops64372       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops64461       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops64464       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops64465       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops64465       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops64465       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops64465       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 /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 /840       % AS's announcing span of /80.0006
    AS's announcing span of /983       % AS's announcing span of /90.0013
    AS's announcing span of /10113       % AS's announcing span of /100.0018
    AS's announcing span of /11173       % AS's announcing span of /110.0027
    AS's announcing span of /12227       % AS's announcing span of /120.0036
    AS's announcing span of /13457       % AS's announcing span of /130.0072
    AS's announcing span of /14852       % AS's announcing span of /140.0134
    AS's announcing span of /151760       % AS's announcing span of /150.0276
    AS's announcing span of /161852       % AS's announcing span of /160.0290
    AS's announcing span of /172311       % AS's announcing span of /170.0362
    AS's announcing span of /183709       % AS's announcing span of /180.0581
    AS's announcing span of /194899       % AS's announcing span of /190.0768
    AS's announcing span of /206626       % AS's announcing span of /200.1039
    AS's announcing span of /218895       % AS's announcing span of /210.1394
    AS's announcing span of /2210610       % AS's announcing span of /220.1663
    AS's announcing span of /236465       % AS's announcing span of /230.1013
    AS's announcing span of /2414582       % AS's announcing span of /240.2286
    AS's announcing span of /2526       % AS's announcing span of /250.0004
    AS's announcing span of /2614       % AS's announcing span of /260.0002
    AS's announcing span of /2715       % AS's announcing span of /270.0002
    AS's announcing span of /2819       % AS's announcing span of /280.0003
    AS's announcing span of /2911       % AS's announcing span of /290.0002
    AS's announcing span of /309       % AS's announcing span of /300.0001
    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 Count154140
Average AS Connectivity Degree (308280/64465)4.7821
Average AS Connectivity IN:OUT Degree0.2751
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 Path450745Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path436748Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin294786Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation294882Report (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 Mar 19 06:00:00 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