BGP Home    Table Reports    CIDR Reports    Update Reports   IPv4 Reports   IPv6 Reports   ASN Reports    Distribution Reports  
   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Sat Jun 23 22:40:00 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)760730   Change in FIB Size-11   Change (%)-0.001
    All BGP entries (RIB)29411141
    RIB/FIB ratio (29411141/760730)38.6617
      Valid entries29411141
      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)2860095802
    Total address space advertised (prefix length)0.58658367
    Percentage of IPv4 space advertised (2860095802/4294967295)66.591795
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3760
    Average address span (as prefix size)20.1239
Average prefix length22.7623

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 aggregates422176       Specifics as % of FIB entries (422176/760730)55.4962
    Specifics as % of address span (1098641862/2860095802)38.4128    
    Specifics where AS prepended Path matches aggregate183140         AS-P_Path-Match % (183140/422176)43.38
    AS Path matches aggregate192090         AS-Path-Match % (192090/422176)45.5000
    AS Origin matches aggregate321309         AS-Origin-Match % (321309/422176)76.1078
    Root Prefixes338554
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0291464
      Root Prefixes with depth 137545
      Root Prefixes with depth 27578
      Root Prefixes with depth 31485
      Root Prefixes with depth 4365
      Root Prefixes with depth 577
      Root Prefixes with depth 630
      Root Prefixes with depth 710

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 ASes61770       ASes visible in only one AS path37257
    Origin only ASes51892         Origin ASs announced via a single AS path36316
    Transit only ASes357       Originating AS ATOM count61413
    Mixed ASes9521         Originating AS ATOM compression0.0807
    Multi-Origin Prefixes7130    
    ASes originating a single prefix22674    
    Average entries per origin AS12.3871         Maximum entries for an origin AS (AS58224)417
    Average address range span for an origin AS46571.5044         Maximum address range for an origin AS (AS4134)119073024

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 Paths3523028       Unique AS prepended Paths3757788
AS Paths used in FIB100053       AS Paths using prepending894875
    AS paths associated with a single FIB entry47316       AS Paths using private ASs1477
    Average AS path length3.7928         Maximum AS Path length15
    Average address weighted AS path length4.7475         Maximum prepended AS Path length46
    Average entries per AS Path0.2159       Average entries per FIB AS Path7.6033
    AS Paths per origin AS57.3662       FIB AS Paths per origin AS1.6292
      AS PATH ATOM compression0.1315    

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 /1037       % Prefix /100.00
    Prefix count /1199       % Prefix /110.01
    Prefix count /12293       % Prefix /120.04
    Prefix count /13569       % Prefix /130.07
    Prefix count /141112       % Prefix /140.15
    Prefix count /151945       % Prefix /150.26
    Prefix count /1613552       % Prefix /161.78
    Prefix count /178218       % Prefix /171.08
    Prefix count /1814230       % Prefix /181.87
    Prefix count /1926135       % Prefix /193.44
    Prefix count /2041010       % Prefix /205.39
    Prefix count /2148993       % Prefix /216.44
    Prefix count /2293877       % Prefix /2212.34
    Prefix count /2376436       % Prefix /2310.05
    Prefix count /24422335       % Prefix /2455.52
    Prefix count /251789       % Prefix /250.24
    Prefix count /261680       % Prefix /260.22
    Prefix count /271342       % Prefix /270.18
    Prefix count /28844       % Prefix /280.11
    Prefix count /291500       % Prefix /290.20
    Prefix count /30511       % Prefix /300.07
    Prefix count /31446       % Prefix /310.06
    Prefix count /323752       % Prefix /320.49

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 /1037       % Prefix /100.01
    Prefix count /1192       % Prefix /110.03
    Prefix count /12255       % Prefix /120.08
    Prefix count /13462       % Prefix /130.14
    Prefix count /14952       % Prefix /140.28
    Prefix count /151554       % Prefix /150.46
    Prefix count /169968       % Prefix /162.94
    Prefix count /174418       % Prefix /171.30
    Prefix count /187343       % Prefix /182.17
    Prefix count /1915040       % Prefix /194.44
    Prefix count /2018710       % Prefix /205.53
    Prefix count /2121630       % Prefix /216.39
    Prefix count /2247834       % Prefix /2214.13
    Prefix count /2328075       % Prefix /238.29
    Prefix count /24181429       % Prefix /2453.59
    Prefix count /2526       % Prefix /250.01
    Prefix count /2610       % Prefix /260.00
    Prefix count /2718       % Prefix /270.01
    Prefix count /287       % Prefix /280.00
    Prefix count /296       % Prefix /290.00
    Prefix count /30104       % Prefix /300.03
    Prefix count /315       % Prefix /310.00
    Prefix count /32560       % Prefix /320.17

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 1306479492       % Addresses at AS distance 17.7
    Addresses at AS distance 22124821012       % Addresses at AS distance 253.7
    Addresses at AS distance 31166972653       % Addresses at AS distance 329.5
    Addresses at AS distance 4292088876       % Addresses at AS distance 47.4
    Addresses at AS distance 539354287       % Addresses at AS distance 51.0
    Addresses at AS distance 612644448       % Addresses at AS distance 60.3
    Addresses at AS distance 79807680       % Addresses at AS distance 70.2
    Addresses at AS distance 86125056       % Addresses at AS distance 80.2
    Addresses at AS distance 9442880       % Addresses at AS distance 90.0
    Addresses at AS distance 10256       % 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
    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 hops306479492       % Addresses reachable within 1 AS hops7
    Addresses reachable within 2 AS hops2431300504       % Addresses reachable within 2 AS hops61
    Addresses reachable within 3 AS hops3598273157       % Addresses reachable within 3 AS hops90
    Addresses reachable within 4 AS hops3890362033       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3929716320       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3942360768       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3952168448       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3958293504       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3958736384       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3958736640       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3958737664       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops3958737664       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3958737664       % Addresses reachable within 13 AS hops100
    Addresses reachable within 14 AS hops3958737664       % Addresses reachable within 14 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops12       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops45       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops18227       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops33891       % ASes reachable at 3 AS hops54
    ASes reachable at 4 AS hops7823       % ASes reachable at 4 AS hops12
    ASes reachable at 5 AS hops1360       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops241       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops89       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops72       % 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 hops1       % 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 hops12       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops57       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops18284       Cumulative % ASes by AS hops 229.6
    ASes reachable by 3 AS hops52175       Cumulative % ASes by AS hops 384.5
    ASes reachable by 4 AS hops59998       Cumulative % ASes by AS hops 497.1
    ASes reachable by 5 AS hops61358       Cumulative % ASes by AS hops 599.3
    ASes reachable by 6 AS hops61599       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops61688       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops61760       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops61769       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops61769       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops61770       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops61770       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops61770       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops61770       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 /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 /840       % AS's announcing span of /80.0007
    AS's announcing span of /978       % AS's announcing span of /90.0013
    AS's announcing span of /10113       % AS's announcing span of /100.0019
    AS's announcing span of /11175       % AS's announcing span of /110.0029
    AS's announcing span of /12232       % AS's announcing span of /120.0038
    AS's announcing span of /13446       % AS's announcing span of /130.0073
    AS's announcing span of /14844       % AS's announcing span of /140.0138
    AS's announcing span of /151736       % AS's announcing span of /150.0284
    AS's announcing span of /161843       % AS's announcing span of /160.0302
    AS's announcing span of /172252       % AS's announcing span of /170.0369
    AS's announcing span of /183684       % AS's announcing span of /180.0603
    AS's announcing span of /194740       % AS's announcing span of /190.0776
    AS's announcing span of /206299       % AS's announcing span of /200.1031
    AS's announcing span of /218248       % AS's announcing span of /210.1351
    AS's announcing span of /229901       % AS's announcing span of /220.1621
    AS's announcing span of /236208       % AS's announcing span of /230.1017
    AS's announcing span of /2414096       % AS's announcing span of /240.2308
    AS's announcing span of /2523       % AS's announcing span of /250.0004
    AS's announcing span of /2612       % 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 /2912       % AS's announcing span of /290.0002
    AS's announcing span of /303       % 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 Count148435
Average AS Connectivity Degree (296870/61770)4.8061
Average AS Connectivity IN:OUT Degree0.2820
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 Path407303Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path399377Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin279165Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation279191Report (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 Sat Jun 23 22:40:00 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