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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Thu Apr 19 06:00:00 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)751869   Change in FIB Size0   Change (%)0.000
    All BGP entries (RIB)30534477
    RIB/FIB ratio (30534477/751869)40.6114
      Valid entries30534477
      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)2865521289
    Total address space advertised (prefix length)0.58384953
    Percentage of IPv4 space advertised (2865521289/4294967295)66.718117
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3811
    Average address span (as prefix size)20.1040
Average prefix length22.7482

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 aggregates416638       Specifics as % of FIB entries (416638/751869)55.4136
    Specifics as % of address span (1111364192/2865521289)38.7840    
    Specifics where AS prepended Path matches aggregate178068         AS-P_Path-Match % (178068/416638)42.74
    AS Path matches aggregate188888         AS-Path-Match % (188888/416638)45.3362
    AS Origin matches aggregate319222         AS-Origin-Match % (319222/416638)76.6186
    Root Prefixes335231
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0288925
      Root Prefixes with depth 136870
      Root Prefixes with depth 27480
      Root Prefixes with depth 31486
      Root Prefixes with depth 4355
      Root Prefixes with depth 578
      Root Prefixes with depth 627
      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 ASes61278       ASes visible in only one AS path38159
    Origin only ASes51523         Origin ASs announced via a single AS path37154
    Transit only ASes330       Originating AS ATOM count60948
    Mixed ASes9425         Originating AS ATOM compression0.0811
    Multi-Origin Prefixes5663    
    ASes originating a single prefix22604    
    Average entries per origin AS12.3362         Maximum entries for an origin AS (AS197695)307
    Average address range span for an origin AS47015.8379         Maximum address range for an origin AS (AS4134)119129856

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 Paths3752066       Unique AS prepended Paths4003085
AS Paths used in FIB95132       AS Paths using prepending967955
    AS paths associated with a single FIB entry44249       AS Paths using private ASs1619
    Average AS path length3.7624         Maximum AS Path length14
    Average address weighted AS path length4.7163         Maximum prepended AS Path length41
    Average entries per AS Path0.2004       Average entries per FIB AS Path7.9034
    AS Paths per origin AS61.5618       FIB AS Paths per origin AS1.5609
      AS PATH ATOM compression0.1265    

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 /815       % Prefix /80.00
    Prefix count /912       % Prefix /90.00
    Prefix count /1037       % Prefix /100.00
    Prefix count /11100       % Prefix /110.01
    Prefix count /12291       % Prefix /120.04
    Prefix count /13566       % Prefix /130.08
    Prefix count /141113       % Prefix /140.15
    Prefix count /151941       % Prefix /150.26
    Prefix count /1613591       % Prefix /161.81
    Prefix count /178149       % Prefix /171.08
    Prefix count /1814126       % Prefix /181.88
    Prefix count /1926138       % Prefix /193.48
    Prefix count /2041001       % Prefix /205.45
    Prefix count /2148733       % Prefix /216.48
    Prefix count /2292602       % Prefix /2212.32
    Prefix count /2375547       % Prefix /2310.05
    Prefix count /24416590       % Prefix /2455.41
    Prefix count /251814       % Prefix /250.24
    Prefix count /261652       % Prefix /260.22
    Prefix count /271364       % Prefix /270.18
    Prefix count /28885       % Prefix /280.12
    Prefix count /291509       % Prefix /290.20
    Prefix count /30542       % Prefix /300.07
    Prefix count /31410       % Prefix /310.05
    Prefix count /323141       % Prefix /320.42

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 /815       % Prefix /80.00
    Prefix count /94       % Prefix /90.00
    Prefix count /1037       % Prefix /100.01
    Prefix count /1192       % Prefix /110.03
    Prefix count /12252       % Prefix /120.08
    Prefix count /13459       % Prefix /130.14
    Prefix count /14956       % Prefix /140.29
    Prefix count /151550       % Prefix /150.46
    Prefix count /1610028       % Prefix /162.99
    Prefix count /174392       % Prefix /171.31
    Prefix count /187329       % Prefix /182.19
    Prefix count /1915034       % Prefix /194.48
    Prefix count /2018701       % Prefix /205.58
    Prefix count /2121616       % Prefix /216.45
    Prefix count /2247074       % Prefix /2214.04
    Prefix count /2327821       % Prefix /238.30
    Prefix count /24179097       % Prefix /2453.42
    Prefix count /2526       % Prefix /250.01
    Prefix count /2613       % Prefix /260.00
    Prefix count /2720       % Prefix /270.01
    Prefix count /287       % Prefix /280.00
    Prefix count /297       % Prefix /290.00
    Prefix count /30117       % Prefix /300.03
    Prefix count /315       % Prefix /310.00
    Prefix count /32579       % 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 1331440974       % Addresses at AS distance 18.3
    Addresses at AS distance 22187199029       % Addresses at AS distance 255.0
    Addresses at AS distance 31120489430       % Addresses at AS distance 328.2
    Addresses at AS distance 4268589085       % Addresses at AS distance 46.8
    Addresses at AS distance 541402860       % Addresses at AS distance 51.0
    Addresses at AS distance 611896135       % Addresses at AS distance 60.3
    Addresses at AS distance 79729600       % Addresses at AS distance 70.2
    Addresses at AS distance 85676800       % Addresses at AS distance 80.1
    Addresses at AS distance 9449024       % Addresses at AS distance 90.0
    Addresses at AS distance 102560       % Addresses at AS distance 100.0
    Addresses at AS distance 119984       % 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 hops331440974       % Addresses reachable within 1 AS hops8
    Addresses reachable within 2 AS hops2518640003       % Addresses reachable within 2 AS hops63
    Addresses reachable within 3 AS hops3639129433       % Addresses reachable within 3 AS hops91
    Addresses reachable within 4 AS hops3907718518       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops3949121378       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops3961017513       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops3970747113       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops3976423913       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops3976872937       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops3976875497       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops3976885481       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops3976885481       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops3976885481       % Addresses reachable within 13 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops13       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops48       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops18269       % ASes reachable at 2 AS hops29
    ASes reachable at 3 AS hops34016       % ASes reachable at 3 AS hops55
    ASes reachable at 4 AS hops7220       % ASes reachable at 4 AS hops11
    ASes reachable at 5 AS hops1302       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops240       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops102       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops60       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops7       % 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
     
Cumulative ASes by AS hops(data)   Cumulative % ASes by AS hops(data)
    ASes reachable by 0 AS hops13       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops61       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops18330       Cumulative % ASes by AS hops 229.9
    ASes reachable by 3 AS hops52346       Cumulative % ASes by AS hops 385.4
    ASes reachable by 4 AS hops59566       Cumulative % ASes by AS hops 497.2
    ASes reachable by 5 AS hops60868       Cumulative % ASes by AS hops 599.3
    ASes reachable by 6 AS hops61108       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops61210       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops61270       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops61277       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops61277       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops61278       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops61278       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops61278       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 /57       % 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 /841       % 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 /10112       % AS's announcing span of /100.0018
    AS's announcing span of /11171       % AS's announcing span of /110.0028
    AS's announcing span of /12228       % AS's announcing span of /120.0038
    AS's announcing span of /13457       % AS's announcing span of /130.0075
    AS's announcing span of /14855       % AS's announcing span of /140.0141
    AS's announcing span of /151738       % AS's announcing span of /150.0287
    AS's announcing span of /161832       % AS's announcing span of /160.0302
    AS's announcing span of /172263       % AS's announcing span of /170.0373
    AS's announcing span of /183614       % AS's announcing span of /180.0596
    AS's announcing span of /194739       % AS's announcing span of /190.0782
    AS's announcing span of /206254       % AS's announcing span of /200.1032
    AS's announcing span of /218070       % AS's announcing span of /210.1331
    AS's announcing span of /229765       % AS's announcing span of /220.1611
    AS's announcing span of /236203       % AS's announcing span of /230.1023
    AS's announcing span of /2414058       % AS's announcing span of /240.2319
    AS's announcing span of /2521       % AS's announcing span of /250.0003
    AS's announcing span of /2617       % AS's announcing span of /260.0003
    AS's announcing span of /2714       % AS's announcing span of /270.0002
    AS's announcing span of /2820       % AS's announcing span of /280.0003
    AS's announcing span of /2914       % 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 /310       % AS's announcing span of /310.0000
    AS's announcing span of /324       % 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 Count149344
Average AS Connectivity Degree (298688/61278)4.8743
Average AS Connectivity IN:OUT Degree0.2897
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 Path404073Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path394964Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin274966Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation275043Report (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 Thu Apr 19 06:00:00 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