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   AS6447 BGP Routing Table Analysis Report












   
  BGP data obtained from AS6447
Report last updated at Fri Aug 7 16:40:00 2020 (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)866521   Change in FIB Size-37   Change (%)-0.004
    All BGP entries (RIB)30364875
    RIB/FIB ratio (30364875/866521)35.0423
      Valid entries30364875
      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)2847339489
    Total address space advertised (prefix length)0.59303263
    Percentage of IPv4 space advertised (2847339489/4294967295)66.294789
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3286
    Average address span (as prefix size)20.3183
Average prefix length22.8059

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 aggregates473950       Specifics as % of FIB entries (473950/866521)54.6957
    Specifics as % of address span (1161938750/2847339489)40.8079    
    Specifics where AS prepended Path matches aggregate184684         AS-P_Path-Match % (184684/473950)38.97
    AS Path matches aggregate198458         AS-Path-Match % (198458/473950)41.8732
    AS Origin matches aggregate355897         AS-Origin-Match % (355897/473950)75.0917
    Root Prefixes392571
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0339737
      Root Prefixes with depth 141959
      Root Prefixes with depth 28694
      Root Prefixes with depth 31639
      Root Prefixes with depth 4418
      Root Prefixes with depth 591
      Root Prefixes with depth 626
      Root Prefixes with depth 77

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 ASes69674       ASes visible in only one AS path40132
    Origin only ASes58600         Origin ASs announced via a single AS path39384
    Transit only ASes395       Originating AS ATOM count69279
    Mixed ASes10679         Originating AS ATOM compression0.0800
    Multi-Origin Prefixes7404    
    ASes originating a single prefix24514    
    Average entries per origin AS12.5077         Maximum entries for an origin AS (AS58224)1086
    Average address range span for an origin AS41099.6043         Maximum address range for an origin AS (AS4134)116035328

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 Paths3619789       Unique AS prepended Paths3872102
AS Paths used in FIB124262       AS Paths using prepending1019104
    AS paths associated with a single FIB entry59796       AS Paths using private ASs847
    Average AS path length4.7206       Number of Prefixes with Selected AS Prepending Paths155825
      Maximum AS Path length14       Number of Prefixes with AS Prepending Paths155825
    Average address weighted AS path length6.1357         Maximum prepended AS Path length45
    Average entries per AS Path0.2394       Average entries per FIB AS Path6.9733
    AS Paths per origin AS52.2494       FIB AS Paths per origin AS1.7936
      AS PATH ATOM compression0.1434    

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 /811       % Prefix /80.00
    Prefix count /911       % Prefix /90.00
    Prefix count /1038       % Prefix /100.00
    Prefix count /11100       % Prefix /110.01
    Prefix count /12288       % Prefix /120.03
    Prefix count /13576       % Prefix /130.07
    Prefix count /141186       % Prefix /140.14
    Prefix count /151999       % Prefix /150.23
    Prefix count /1613582       % Prefix /161.57
    Prefix count /178473       % Prefix /170.98
    Prefix count /1814347       % Prefix /181.66
    Prefix count /1926699       % Prefix /193.08
    Prefix count /2042546       % Prefix /204.91
    Prefix count /2151564       % Prefix /215.95
    Prefix count /22107737       % Prefix /2212.43
    Prefix count /2390497       % Prefix /2310.44
    Prefix count /24500119       % Prefix /2457.72
    Prefix count /251887       % Prefix /250.22
    Prefix count /261346       % Prefix /260.16
    Prefix count /271004       % Prefix /270.12
    Prefix count /28232       % Prefix /280.03
    Prefix count /29237       % Prefix /290.03
    Prefix count /30187       % Prefix /300.02
    Prefix count /31140       % Prefix /310.02
    Prefix count /321715       % Prefix /320.20

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 /811       % Prefix /80.00
    Prefix count /96       % Prefix /90.00
    Prefix count /1036       % Prefix /100.01
    Prefix count /1192       % Prefix /110.02
    Prefix count /12243       % Prefix /120.06
    Prefix count /13463       % Prefix /130.12
    Prefix count /14992       % Prefix /140.25
    Prefix count /151578       % Prefix /150.40
    Prefix count /1610249       % Prefix /162.61
    Prefix count /174408       % Prefix /171.12
    Prefix count /186647       % Prefix /181.69
    Prefix count /1915026       % Prefix /193.83
    Prefix count /2019197       % Prefix /204.89
    Prefix count /2122004       % Prefix /215.61
    Prefix count /2256647       % Prefix /2214.43
    Prefix count /2335206       % Prefix /238.97
    Prefix count /24219730       % Prefix /2455.97
    Prefix count /2514       % Prefix /250.00
    Prefix count /266       % Prefix /260.00
    Prefix count /279       % Prefix /270.00
    Prefix count /283       % Prefix /280.00
    Prefix count /291       % Prefix /290.00
    Prefix count /302       % Prefix /300.00
    Prefix count /310       % Prefix /310.00
    Prefix count /321       % Prefix /320.00

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 1224356251       % Addresses at AS distance 15.6
    Addresses at AS distance 2550800941       % Addresses at AS distance 213.7
    Addresses at AS distance 31523758094       % Addresses at AS distance 338.0
    Addresses at AS distance 41200379511       % Addresses at AS distance 429.9
    Addresses at AS distance 5368067340       % Addresses at AS distance 59.2
    Addresses at AS distance 6100916230       % Addresses at AS distance 62.5
    Addresses at AS distance 720249984       % Addresses at AS distance 70.5
    Addresses at AS distance 812721728       % Addresses at AS distance 80.3
    Addresses at AS distance 97232768       % Addresses at AS distance 90.2
    Addresses at AS distance 10771840       % Addresses at AS distance 100.0
    Addresses at AS distance 1118944       % Addresses at AS distance 110.0
    Addresses at AS distance 124608       % 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 hops224356251       % Addresses reachable within 1 AS hops5
    Addresses reachable within 2 AS hops775157192       % Addresses reachable within 2 AS hops19
    Addresses reachable within 3 AS hops2298915286       % Addresses reachable within 3 AS hops57
    Addresses reachable within 4 AS hops3499294797       % Addresses reachable within 4 AS hops87
    Addresses reachable within 5 AS hops3867362137       % Addresses reachable within 5 AS hops96
    Addresses reachable within 6 AS hops3968278367       % Addresses reachable within 6 AS hops98
    Addresses reachable within 7 AS hops3988528351       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4001250079       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4008482847       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4009254687       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4009273631       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4009278239       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops4009278239       % 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 hops39       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops16696       % ASes reachable at 2 AS hops23
    ASes reachable at 3 AS hops40141       % ASes reachable at 3 AS hops57
    ASes reachable at 4 AS hops10458       % ASes reachable at 4 AS hops15
    ASes reachable at 5 AS hops1777       % ASes reachable at 5 AS hops2
    ASes reachable at 6 AS hops305       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops160       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops88       % 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 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 hops40       Cumulative % ASes by AS hops 10.1
    ASes reachable by 2 AS hops16736       Cumulative % ASes by AS hops 224.0
    ASes reachable by 3 AS hops56877       Cumulative % ASes by AS hops 381.6
    ASes reachable by 4 AS hops67335       Cumulative % ASes by AS hops 496.6
    ASes reachable by 5 AS hops69112       Cumulative % ASes by AS hops 599.2
    ASes reachable by 6 AS hops69417       Cumulative % ASes by AS hops 699.6
    ASes reachable by 7 AS hops69577       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops69665       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops69674       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops69674       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops69674       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops69674       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops69674       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 /611       % AS's announcing span of /60.0002
    AS's announcing span of /725       % AS's announcing span of /70.0004
    AS's announcing span of /842       % AS's announcing span of /80.0006
    AS's announcing span of /976       % AS's announcing span of /90.0011
    AS's announcing span of /10112       % AS's announcing span of /100.0016
    AS's announcing span of /11175       % AS's announcing span of /110.0025
    AS's announcing span of /12247       % AS's announcing span of /120.0036
    AS's announcing span of /13431       % AS's announcing span of /130.0063
    AS's announcing span of /14850       % AS's announcing span of /140.0123
    AS's announcing span of /151754       % AS's announcing span of /150.0254
    AS's announcing span of /161879       % AS's announcing span of /160.0273
    AS's announcing span of /172390       % AS's announcing span of /170.0347
    AS's announcing span of /183792       % AS's announcing span of /180.0550
    AS's announcing span of /195008       % AS's announcing span of /190.0726
    AS's announcing span of /207361       % AS's announcing span of /200.1068
    AS's announcing span of /2110037       % AS's announcing span of /210.1456
    AS's announcing span of /2211895       % AS's announcing span of /220.1726
    AS's announcing span of /237174       % AS's announcing span of /230.1041
    AS's announcing span of /2415591       % AS's announcing span of /240.2262
    AS's announcing span of /2520       % AS's announcing span of /250.0003
    AS's announcing span of /2610       % AS's announcing span of /260.0001
    AS's announcing span of /2717       % AS's announcing span of /270.0002
    AS's announcing span of /2816       % AS's announcing span of /280.0002
    AS's announcing span of /2911       % AS's announcing span of /290.0002
    AS's announcing span of /300       % 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 /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 Count163618
Average AS Connectivity Degree (327236/69674)4.6967
Average AS Connectivity IN:OUT Degree0.2658
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 Path485242Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path469923Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin319463Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation319507Report (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 Fri Aug 7 16:40:00 2020 (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.


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