BGP Home    Table Reports    CIDR Reports    Update Reports   IPv4 Reports   IPv6 Reports   ASN Reports    Distribution Reports  
   AS65000 BGP Routing Table Analysis Report












   
  BGP data obtained from AS65000
Report last updated at Thu May 15 21:10:16 2008 (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)265710   Change in FIB Size-242   Change (%)-0.091
    All BGP entries (RIB)776761
    RIB/FIB ratio (776761/265710)2.9233
      Valid entries776761
      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)1853908196
    Total address space advertised (prefix length)1.21207734
    Percentage of IPv4 space advertised (1853908196/4294967295)43.164664
    Total address space advertised - corrected to 19 /8s(data)
Average address span 6977
    Average address span (as prefix size)19.2316
Average prefix length22.3627

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 aggregates141729       Specifics as % of FIB entries (141729/265710)53.3397
    Specifics as % of address span (482114046/1853908196)26.0053    
    Specifics where AS prepended Path matches aggregate50510         AS-P_Path-Match % (50510/141729)35.64
    AS Path matches aggregate51974         AS-Path-Match % (51974/141729)36.6714
    AS Origin matches aggregate88316         AS-Origin-Match % (88316/141729)62.3133
    Root Prefixes123980
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0109137
      Root Prefixes with depth 112020
      Root Prefixes with depth 22270
      Root Prefixes with depth 3451
      Root Prefixes with depth 486
      Root Prefixes with depth 512
      Root Prefixes with depth 64

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 ASes28290       ASes visible in only one AS path18902
    Origin only ASes24424         Origin ASs announced via a single AS path18674
    Transit only ASes91       Originating AS ATOM count28199
    Mixed ASes3775         Originating AS ATOM compression0.1061
    Multi-Origin Prefixes449    
    ASes originating a single prefix11898    
    Average entries per origin AS9.4227         Maximum entries for an origin AS (AS44015)39
    Average address range span for an origin AS65743.7567         Maximum address range for an origin AS (AS721)88359936

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 Paths120189       Unique AS prepended Paths124288
AS Paths used in FIB41962       AS Paths using prepending17330
    AS paths associated with a single FIB entry20790       AS Paths using private ASs13
    Average AS path length5.0123         Maximum AS Path length14
    Average address weighted AS path length5.7793         Maximum prepended AS Path length30
    Average entries per AS Path2.2108       Average entries per FIB AS Path6.3322
    AS Paths per origin AS4.2622       FIB AS Paths per origin AS1.4881
      AS PATH ATOM compression0.1579    

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 /818       % Prefix /80.01
    Prefix count /99       % Prefix /90.00
    Prefix count /1016       % Prefix /100.01
    Prefix count /1141       % Prefix /110.02
    Prefix count /12141       % Prefix /120.05
    Prefix count /13286       % Prefix /130.11
    Prefix count /14516       % Prefix /140.19
    Prefix count /151011       % Prefix /150.38
    Prefix count /1610043       % Prefix /163.78
    Prefix count /174476       % Prefix /171.68
    Prefix count /187419       % Prefix /182.79
    Prefix count /1915717       % Prefix /195.92
    Prefix count /2018926       % Prefix /207.12
    Prefix count /2117916       % Prefix /216.74
    Prefix count /2222315       % Prefix /228.40
    Prefix count /2323486       % Prefix /238.84
    Prefix count /24138145       % Prefix /2451.99
    Prefix count /251088       % Prefix /250.41
    Prefix count /261248       % Prefix /260.47
    Prefix count /27742       % Prefix /270.28
    Prefix count /28502       % Prefix /280.19
    Prefix count /29747       % Prefix /290.28
    Prefix count /30588       % Prefix /300.22
    Prefix count /311       % Prefix /310.00
    Prefix count /32312       % Prefix /320.12

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 /818       % Prefix /80.01
    Prefix count /91       % Prefix /90.00
    Prefix count /1016       % Prefix /100.01
    Prefix count /1140       % Prefix /110.03
    Prefix count /12130       % Prefix /120.10
    Prefix count /13238       % Prefix /130.19
    Prefix count /14462       % Prefix /140.37
    Prefix count /15863       % Prefix /150.70
    Prefix count /168403       % Prefix /166.78
    Prefix count /172806       % Prefix /172.26
    Prefix count /184696       % Prefix /183.79
    Prefix count /1910398       % Prefix /198.39
    Prefix count /2011206       % Prefix /209.04
    Prefix count /218377       % Prefix /216.76
    Prefix count /229513       % Prefix /227.67
    Prefix count /239999       % Prefix /238.07
    Prefix count /2456738       % Prefix /2445.76
    Prefix count /2539       % Prefix /250.03
    Prefix count /2618       % Prefix /260.01
    Prefix count /275       % Prefix /270.00
    Prefix count /281       % Prefix /280.00
    Prefix count /290       % Prefix /290.00
    Prefix count /3013       % Prefix /300.01
    Prefix count /310       % Prefix /310.00
    Prefix count /320       % 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 0256       % Addresses at AS distance 00.0
    Addresses at AS distance 11793       % Addresses at AS distance 10.0
    Addresses at AS distance 2113813566       % Addresses at AS distance 24.9
    Addresses at AS distance 31063879417       % Addresses at AS distance 345.5
    Addresses at AS distance 4891338868       % Addresses at AS distance 438.2
    Addresses at AS distance 5220608001       % Addresses at AS distance 59.4
    Addresses at AS distance 634633416       % Addresses at AS distance 61.5
    Addresses at AS distance 711139949       % Addresses at AS distance 70.5
    Addresses at AS distance 8586209       % Addresses at AS distance 80.0
    Addresses at AS distance 96431       % Addresses at AS distance 90.0
    Addresses at AS distance 1014336       % Addresses at AS distance 100.0
    Addresses at AS distance 110       % 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 hops256       % Addresses reachable within 0 AS hops0
    Addresses reachable within 1 AS hops2049       % Addresses reachable within 1 AS hops0
    Addresses reachable within 2 AS hops113815615       % Addresses reachable within 2 AS hops4
    Addresses reachable within 3 AS hops1177695032       % Addresses reachable within 3 AS hops50
    Addresses reachable within 4 AS hops2069033900       % Addresses reachable within 4 AS hops88
    Addresses reachable within 5 AS hops2289641901       % Addresses reachable within 5 AS hops98
    Addresses reachable within 6 AS hops2324275317       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops2335415266       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops2336001475       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops2336007906       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops2336022242       % Addresses reachable within 10 AS hops100
    Addresses reachable within 11 AS hops2336022242       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops2336022242       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops2336022242       % Addresses reachable within 13 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops7       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops6       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops49       % ASes reachable at 2 AS hops0
    ASes reachable at 3 AS hops4034       % ASes reachable at 3 AS hops14
    ASes reachable at 4 AS hops15845       % ASes reachable at 4 AS hops56
    ASes reachable at 5 AS hops6788       % ASes reachable at 5 AS hops23
    ASes reachable at 6 AS hops1372       % ASes reachable at 6 AS hops4
    ASes reachable at 7 AS hops163       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops23       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops3       % 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 hops7       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops13       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops62       Cumulative % ASes by AS hops 20.2
    ASes reachable by 3 AS hops4096       Cumulative % ASes by AS hops 314.5
    ASes reachable by 4 AS hops19941       Cumulative % ASes by AS hops 470.5
    ASes reachable by 5 AS hops26729       Cumulative % ASes by AS hops 594.5
    ASes reachable by 6 AS hops28101       Cumulative % ASes by AS hops 699.3
    ASes reachable by 7 AS hops28264       Cumulative % ASes by AS hops 799.9
    ASes reachable by 8 AS hops28287       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops28290       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops28290       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops28290       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops28290       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops28290       Cumulative % ASes by AS hops 13100.0

BGP Update Reports

Compares the current BGP Table with the previous table and reports on the number of changes in the FIB. These changes are further categorised into announcements, withdrawls and path changes, and further categorised by prefix length.

FIB Update ReportsData  AnnounceData  WithdrawData  Path ChgData
Table Updates2396   New Entries73   Removed Entries330   Updated Entries1993
     Report     Report     Report 
    Address Span21353870       Address Span80256       Address Span17112992       Address Span4160622
    Average address span per update8912       Avg Span1099       Avg Span51857       Avg Span2087
    Average prefix size updated25.08       Average prefix size23.19       Average prefix size23.22       Average prefix size25.46
Per-Prefix updates(data)       Prefix announcements(data)       Prefix withdrawals(data)       Prefix path updates(data)
      Prefix /8 total1         Prefix /8 announcements0         Prefix /8 withdrawals1         Prefix /8 path updates0
      Prefix /9 total0         Prefix /9 announcements0         Prefix /9 withdrawals0         Prefix /9 path updates0
      Prefix /10 total0         Prefix /10 announcements0         Prefix /10 withdrawals0         Prefix /10 path updates0
      Prefix /11 total0         Prefix /11 announcements0         Prefix /11 withdrawals0         Prefix /11 path updates0
      Prefix /12 total1         Prefix /12 announcements0         Prefix /12 withdrawals0         Prefix /12 path updates1
      Prefix /13 total0         Prefix /13 announcements0         Prefix /13 withdrawals0         Prefix /13 path updates0
      Prefix /14 total0         Prefix /14 announcements0         Prefix /14 withdrawals0         Prefix /14 path updates0
      Prefix /15 total0         Prefix /15 announcements0         Prefix /15 withdrawals0         Prefix /15 path updates0
      Prefix /16 total20         Prefix /16 announcements0         Prefix /16 withdrawals0         Prefix /16 path updates20
      Prefix /17 total9         Prefix /17 announcements0         Prefix /17 withdrawals0         Prefix /17 path updates9
      Prefix /18 total38         Prefix /18 announcements1         Prefix /18 withdrawals6         Prefix /18 path updates31
      Prefix /19 total56         Prefix /19 announcements3         Prefix /19 withdrawals6         Prefix /19 path updates47
      Prefix /20 total72         Prefix /20 announcements2         Prefix /20 withdrawals12         Prefix /20 path updates58
      Prefix /21 total85         Prefix /21 announcements4         Prefix /21 withdrawals21         Prefix /21 path updates60