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AS65000 BGP Routing Table Analysis Report


	BGP data obtained from AS65000 Report last updated at Sun Mar 21 23:10:08 2010 (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)	317341	Change in FIB Size	23	Change (%)	0.007
All BGP entries (RIB)	627510
RIB/FIB ratio (627510/317341)	1.9774
Valid entries	627510
Suppressed RIB entries	0
Damped entries	0
History entries	0

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)	2221182488
Total address space advertised (prefix length)	0.95131922
Percentage of IPv4 space advertised (2221182488/4294967295)	51.715935
Total address space advertised - corrected to 19 /8s	(data)
Average address span	6999
Average address span (as prefix size)	19.2271
Average prefix length	22.3293

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 aggregates	163554	Specifics as % of FIB entries (163554/317341)	51.5389
Specifics as % of address span (610339452/2221182488)	27.4781
Specifics where AS prepended Path matches aggregate	62650	AS-P_Path-Match % (62650/163554)	38.31
AS Path matches aggregate	64997	AS-Path-Match % (64997/163554)	39.7404
AS Origin matches aggregate	108373	AS-Origin-Match % (108373/163554)	66.2613
Root Prefixes	153787
Root Prefix Tree Depth	(data)
Root Prefixes with depth 0	134909
Root Prefixes with depth 1	15391
Root Prefixes with depth 2	2887
Root Prefixes with depth 3	478
Root Prefixes with depth 4	99
Root Prefixes with depth 5	20
Root Prefixes with depth 6	3

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 ASes	33915	ASes visible in only one AS path	22177
Origin only ASes	29315	Origin ASs announced via a single AS path	22053
Transit only ASes	116	Originating AS ATOM count	33799
Mixed ASes	4484	Originating AS ATOM compression	0.1065
Multi-Origin Prefixes	518
ASes originating a single prefix	14492
Average entries per origin AS	9.3891	Maximum entries for an origin AS (AS7018)	1563
Average address range span for an origin AS	65717.4025	Maximum address range for an origin AS (AS4134)	96060160

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 Paths	95665	Unique AS prepended Paths	99451
AS Paths used in FIB	50343	AS Paths using prepending	14553
AS paths associated with a single FIB entry	25232	AS Paths using private ASs	33
Average AS path length	5.3634	Maximum AS Path length	14
Average address weighted AS path length	6.2686	Maximum prepended AS Path length	26
Average entries per AS Path	3.3172	Average entries per FIB AS Path	6.3036
AS Paths per origin AS	2.8304	FIB AS Paths per origin AS	1.4895
AS PATH ATOM compression	0.1586

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 /8	21	% Prefix /8	0.01
Prefix count /9	10	% Prefix /9	0.00
Prefix count /10	25	% Prefix /10	0.01
Prefix count /11	66	% Prefix /11	0.02
Prefix count /12	191	% Prefix /12	0.06
Prefix count /13	390	% Prefix /13	0.12
Prefix count /14	672	% Prefix /14	0.21
Prefix count /15	1240	% Prefix /15	0.39
Prefix count /16	11004	% Prefix /16	3.47
Prefix count /17	5204	% Prefix /17	1.64
Prefix count /18	8774	% Prefix /18	2.76
Prefix count /19	18224	% Prefix /19	5.74
Prefix count /20	22217	% Prefix /20	7.00
Prefix count /21	22350	% Prefix /21	7.04
Prefix count /22	28927	% Prefix /22	9.12
Prefix count /23	28768	% Prefix /23	9.07
Prefix count /24	166116	% Prefix /24	52.35
Prefix count /25	980	% Prefix /25	0.31
Prefix count /26	1215	% Prefix /26	0.38
Prefix count /27	639	% Prefix /27	0.20
Prefix count /28	190	% Prefix /28	0.06
Prefix count /29	85	% Prefix /29	0.03
Prefix count /30	25	% Prefix /30	0.01
Prefix count /31	0	% Prefix /31	0.00
Prefix count /32	8	% Prefix /32	0.00

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 /8	21	% Prefix /8	0.01
Prefix count /9	2	% Prefix /9	0.00
Prefix count /10	25	% Prefix /10	0.02
Prefix count /11	64	% Prefix /11	0.04
Prefix count /12	171	% Prefix /12	0.11
Prefix count /13	304	% Prefix /13	0.20
Prefix count /14	585	% Prefix /14	0.38
Prefix count /15	1012	% Prefix /15	0.66
Prefix count /16	8943	% Prefix /16	5.82
Prefix count /17	3146	% Prefix /17	2.05
Prefix count /18	5193	% Prefix /18	3.38
Prefix count /19	11828	% Prefix /19	7.69
Prefix count /20	13396	% Prefix /20	8.71
Prefix count /21	11649	% Prefix /21	7.57
Prefix count /22	13246	% Prefix /22	8.61
Prefix count /23	12989	% Prefix /23	8.45
Prefix count /24	71174	% Prefix /24	46.28
Prefix count /25	23	% Prefix /25	0.01
Prefix count /26	7	% Prefix /26	0.00
Prefix count /27	6	% Prefix /27	0.00
Prefix count /28	1	% Prefix /28	0.00
Prefix count /29	0	% Prefix /29	0.00
Prefix count /30	2	% Prefix /30	0.00
Prefix count /31	0	% Prefix /31	0.00
Prefix count /32	0	% Prefix /32	0.00

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 0	256	% Addresses at AS distance 0	0.0
Addresses at AS distance 1	2048	% Addresses at AS distance 1	0.0
Addresses at AS distance 2	58885521	% Addresses at AS distance 2	2.1
Addresses at AS distance 3	878756899	% Addresses at AS distance 3	31.0
Addresses at AS distance 4	1249416416	% Addresses at AS distance 4	44.1
Addresses at AS distance 5	549575296	% Addresses at AS distance 5	19.4
Addresses at AS distance 6	78137712	% Addresses at AS distance 6	2.8
Addresses at AS distance 7	11988208	% Addresses at AS distance 7	0.4
Addresses at AS distance 8	2959072	% Addresses at AS distance 8	0.1
Addresses at AS distance 9	1791008	% Addresses at AS distance 9	0.1
Addresses at AS distance 10	9504	% Addresses at AS distance 10	0.0
Addresses at AS distance 11	0	% Addresses at AS distance 11	0.0
Addresses at AS distance 12	0	% Addresses at AS distance 12	0.0
Addresses at AS distance 13	0	% Addresses at AS distance 13	0.0

Cumulative Address by AS distance	(data)	Cumulative % Address by AS distance	(data)
Addresses reachable within 0 AS hops	256	% Addresses reachable within 0 AS hops	0
Addresses reachable within 1 AS hops	2304	% Addresses reachable within 1 AS hops	0
Addresses reachable within 2 AS hops	58887825	% Addresses reachable within 2 AS hops	2
Addresses reachable within 3 AS hops	937644724	% Addresses reachable within 3 AS hops	33
Addresses reachable within 4 AS hops	2187061140	% Addresses reachable within 4 AS hops	77
Addresses reachable within 5 AS hops	2736636436	% Addresses reachable within 5 AS hops	96
Addresses reachable within 6 AS hops	2814774148	% Addresses reachable within 6 AS hops	99
Addresses reachable within 7 AS hops	2826762356	% Addresses reachable within 7 AS hops	99
Addresses reachable within 8 AS hops	2829721428	% Addresses reachable within 8 AS hops	99
Addresses reachable within 9 AS hops	2831512436	% Addresses reachable within 9 AS hops	99
Addresses reachable within 10 AS hops	2831521940	% Addresses reachable within 10 AS hops	100
Addresses reachable within 11 AS hops	2831521940	% Addresses reachable within 11 AS hops	100
Addresses reachable within 12 AS hops	2831521940	% Addresses reachable within 12 AS hops	100
Addresses reachable within 13 AS hops	2831521940	% Addresses reachable within 13 AS hops	100

ASes by AS distance	(data)	% ASes by AS hops	(data)
ASes reachable at 0 AS hops	1	% ASes reachable at 0 AS hops	0
ASes reachable at 1 AS hops	3	% ASes reachable at 1 AS hops	0
ASes reachable at 2 AS hops	41	% ASes reachable at 2 AS hops	0
ASes reachable at 3 AS hops	692	% ASes reachable at 3 AS hops	2
ASes reachable at 4 AS hops	15913	% ASes reachable at 4 AS hops	46
ASes reachable at 5 AS hops	13208	% ASes reachable at 5 AS hops	38
ASes reachable at 6 AS hops	3543	% ASes reachable at 6 AS hops	10
ASes reachable at 7 AS hops	428	% ASes reachable at 7 AS hops	1
ASes reachable at 8 AS hops	61	% ASes reachable at 8 AS hops	0
ASes reachable at 9 AS hops	24	% ASes reachable at 9 AS hops	0
ASes reachable at 10 AS hops	1	% ASes reachable at 10 AS hops	0
ASes reachable at 11 AS hops	0	% ASes reachable at 11 AS hops	0
ASes reachable at 12 AS hops	0	% ASes reachable at 12 AS hops	0
ASes reachable at 13 AS hops	0	% ASes reachable at 13 AS hops	0

Cumulative ASes by AS hops	(data)	Cumulative % ASes by AS hops	(data)
ASes reachable by 0 AS hops	1	Cumulative % ASes by AS hops 0	0.0
ASes reachable by 1 AS hops	4	Cumulative % ASes by AS hops 1	0.0
ASes reachable by 2 AS hops	45	Cumulative % ASes by AS hops 2	0.1
ASes reachable by 3 AS hops	737	Cumulative % ASes by AS hops 3	2.2
ASes reachable by 4 AS hops	16650	Cumulative % ASes by AS hops 4	49.1
ASes reachable by 5 AS hops	29858	Cumulative % ASes by AS hops 5	88.0
ASes reachable by 6 AS hops	33401	Cumulative % ASes by AS hops 6	98.5
ASes reachable by 7 AS hops	33829	Cumulative % ASes by AS hops 7	99.7
ASes reachable by 8 AS hops	33890	Cumulative % ASes by AS hops 8	99.9
ASes reachable by 9 AS hops	33914	Cumulative % ASes by AS hops 9	100.0
ASes reachable by 10 AS hops	33915	Cumulative % ASes by AS hops 10	100.0
ASes reachable by 11 AS hops	33915	Cumulative % ASes by AS hops 11	100.0
ASes reachable by 12 AS hops	33915	Cumulative % ASes by AS hops 12	100.0
ASes reachable by 13 AS hops	33915	Cumulative % ASes by AS hops 13	100.0

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 Reports	Data	Announce	Data	Withdraw	Data	Path Chg	Data
Table Updates	1527	New Entries	70	Removed Entries	46	Updated Entries	1411
		Report		Report		Report
Address Span	1304572	Address Span	298752	Address Span	183296	Address Span	822524
Average address span per update	854	Avg Span	4267	Avg Span	3984	Avg Span	582
Average prefix size updated	25.35	Average prefix size	21.24	Average prefix size	22.54	Average prefix size	25.64
Per-Prefix updates	(data)	Prefix announcements	(data)	Prefix withdrawals	(data)	Prefix path updates	(data)
Prefix /16 total	5	Prefix /16 announcements	0	Prefix /16 withdrawals	1	Prefix /16 path updates	4
Prefix /17 total	6	Prefix /17 announcements	2	Prefix /17 withdrawals	1	Prefix /17 path updates	3
Prefix /18 total	15	Prefix /18 announcements	4	Prefix /18 withdrawals	3	Prefix /18 path updates	8
Prefix /19 total	20	Prefix /19 announcements	9	Prefix /19 withdrawals	0	Prefix /19 path updates	11
Prefix /20 total	37	Prefix /20 announcements	16	Prefix /20 withdrawals	5	Prefix /20 path updates	16
Prefix /21 total	15	Prefix /21 announcements	2	Prefix /21 withdrawals	2	Prefix /21 path updates	11
Prefix /22 total	49	Prefix /22 announcements	18	Prefix /22 withdrawals	2	Prefix /22 path updates	29
Prefix /23 total	32	Prefix /23 announcements	4	Prefix /23 withdrawals	4	Prefix /23 path updates	24
Prefix /24 total	165	Prefix /24 announcements	15	Prefix /24 withdrawals	28	Prefix /24 path updates	122
Prefix /25 total	297	Prefix /25 announcements	0	Prefix /25 withdrawals	0	Prefix /25 path updates	297
Prefix /26 total	500	Prefix /26 announcements	0	Prefix /26 withdrawals	0	Prefix /26 path updates	500
Prefix /27 total	236	Prefix /27 announcements	0	Prefix /27 withdrawals	0	Prefix /27 path updates	236
Prefix /28 total	109	Prefix /28 announcements	0	Prefix /28 withdrawals	0	Prefix /28 path updates	109
Prefix /29 total	34	Prefix /29 announcements	0	Prefix /29 withdrawals	0	Prefix /29 path updates	34
Prefix /30 total	7	Prefix /30 announcements	0	Prefix /30 withdrawals	0	Prefix /30 path updates	7
Prefix /31 total	0	Prefix /31 announcements	0	Prefix /31 withdrawals	0	Prefix /31 path updates	0
Prefix /32 total	0	Prefix /32 announcements	0	Prefix /32 withdrawals	0	Prefix /32 path updates	0
Update rate, normalized by prefix count		Announce		Withdraw		Path Chg
Prefix /8 total	0.00	Prefix /8 announcements	0.00	Prefix /8 withdrawals	0.00	Prefix /8 path updates	0.00
Prefix /9 total	0.00	Prefix /9 announcements	0.00	Prefix /9 withdrawals	0.00	Prefix /9 path updates	0.00
Prefix /10 total	0.00	Prefix /10 announcements	0.00	Prefix /10 withdrawals	0.00	Prefix /10 path updates	0.00
Prefix /11 total	0.00	Prefix /11 announcements	0.00	Prefix /11 withdrawals	0.00	Prefix /11 path updates	0.00
Prefix /12 total	0.00	Prefix /12 announcements	0.00	Prefix /12 withdrawals	0.00	Prefix /12 path updates	0.00
Prefix /13 total	0.00	Prefix /13 announcements	0.00	Prefix /13 withdrawals	0.00	Prefix /13 path updates	0.00
Prefix /14 total	0.00	Prefix /14 announcements	0.00	Prefix /14 withdrawals	0.00	Prefix /14 path updates	0.00
Prefix /15 total	0.00	Prefix /15 announcements	0.00	Prefix /15 withdrawals	0.00	Prefix /15 path updates	0.00
Prefix /16 total	0.09	Prefix /16 announcements	0.00	Prefix /16 withdrawals	0.63	Prefix /16 path updates	0.08
Prefix /17 total	0.24	Prefix /17 announcements	1.74	Prefix /17 withdrawals	1.33	Prefix /17 path updates	0.13
Prefix /18 total	0.36	Prefix /18 announcements	2.07	Prefix /18 withdrawals	2.36	Prefix /18 path updates	0.21
Prefix /19 total	0.23	Prefix /19 announcements	2.24	Prefix /19 withdrawals	0.00	Prefix /19 path updates	0.14
Prefix /20 total	0.35	Prefix /20 announcements	3.26	Prefix /20 withdrawals	1.55	Prefix /20 path updates	0.16
Prefix /21 total	0.14	Prefix /21 announcements	0.41	Prefix /21 withdrawals	0.62	Prefix /21 path updates	0.11
Prefix /22 total	0.35	Prefix /22 announcements	2.82	Prefix /22 withdrawals	0.48	Prefix /22 path updates	0.23
Prefix /23 total	0.23	Prefix /23 announcements	0.63	Prefix /23 withdrawals	0.96	Prefix /23 path updates	0.19
Prefix /24 total	0.21	Prefix /24 announcements	0.41	Prefix /24 withdrawals	1.16	Prefix /24 path updates	0.17
Prefix /25 total	62.98	Prefix /25 announcements	0.00	Prefix /25 withdrawals	0.00	Prefix /25 path updates	68.16
Prefix /26 total	85.52	Prefix /26 announcements	0.00	Prefix /26 withdrawals	0.00	Prefix /26 path updates	92.55
Prefix /27 total	76.75	Prefix /27 announcements	0.00	Prefix /27 withdrawals	0.00	Prefix /27 path updates	83.06
Prefix /28 total	119.22	Prefix /28 announcements	0.00	Prefix /28 withdrawals	0.00	Prefix /28 path updates	129.02
Prefix /29 total	83.13	Prefix /29 announcements	0.00	Prefix /29 withdrawals	0.00	Prefix /29 path updates	89.96
Prefix /30 total	58.19	Prefix /30 announcements	0.00	Prefix /30 withdrawals	0.00	Prefix /30 path updates	62.97
Prefix /31 total	0.00	Prefix /31 announcements	100.00	Prefix /31 withdrawals	100.00	Prefix /31 path updates	100.00
Prefix /32 total	0.00	Prefix /32 announcements	0.00	Prefix /32 withdrawals	0.00	Prefix /32 path updates	0.00

FIB Update Rate Reports Updates per hour (Measurement Period 0 hrs 59 mins)	Data	Announce Rate	Data	Withdraw Rate	Data	Path Chg Rate	Data
Table Updates	1527.424	New Entries	70.019	Removed Entries	46.013	Updated Entries	1411.392
Address Span	1304934.500	Address Span	298835.000	Address Span	183346.938	Address Span	822752.562
Average address span per update	854.237	Avg Span	4268.186	Avg Span	3985.107	Avg Span	582.162
Per-Prefix updates	(data)	Prefix announcements	(data)	Prefix withdrawals	(data)	Prefix path updates	(data)
Prefix /1 update rate	0.000	Prefix /1 announcements	0.000	Prefix /1 withdrawals	0.000	Prefix /1 path updates	0.000
Prefix /2 update rate	0.000	Prefix /2 announcements	0.000	Prefix /2 withdrawals	0.000	Prefix /2 path updates	0.000
Prefix /3 update rate	0.000	Prefix /3 announcements	0.000	Prefix /3 withdrawals	0.000	Prefix /3 path updates	0.000
Prefix /4 update rate	0.000	Prefix /4 announcements	0.000	Prefix /4 withdrawals	0.000	Prefix /4 path updates	0.000
Prefix /5 update rate	0.000	Prefix /5 announcements	0.000	Prefix /5 withdrawals	0.000	Prefix /5 path updates	0.000
Prefix /6 update rate	0.000	Prefix /6 announcements	0.000	Prefix /6 withdrawals	0.000	Prefix /6 path updates	0.000
Prefix /7 update rate	0.000	Prefix /7 announcements	0.000	Prefix /7 withdrawals	0.000	Prefix /7 path updates	0.000
Prefix /8 update rate	0.000	Prefix /8 announcements	0.000	Prefix /8 withdrawals	0.000	Prefix /8 path updates	0.000
Prefix /9 update rate	0.000	Prefix /9 announcements	0.000	Prefix /9 withdrawals	0.000	Prefix /9 path updates	0.000
Prefix /10 update rate	0.000	Prefix /10 announcements	0.000	Prefix /10 withdrawals	0.000	Prefix /10 path updates	0.000
Prefix /11 update rate	0.000	Prefix /11 announcements	0.000	Prefix /11 withdrawals	0.000	Prefix /11 path updates	0.000
Prefix /12 update rate	0.000	Prefix /12 announcements	0.000	Prefix /12 withdrawals	0.000	Prefix /12 path updates	0.000
Prefix /13 update rate	0.000	Prefix /13 announcements	0.000	Prefix /13 withdrawals	0.000	Prefix /13 path updates	0.000
Prefix /14 update rate	0.000	Prefix /14 announcements	0.000	Prefix /14 withdrawals	0.000	Prefix /14 path updates	0.000
Prefix /15 update rate	0.000	Prefix /15 announcements	0.000	Prefix /15 withdrawals	0.000	Prefix /15 path updates	0.000
Prefix /16 update rate	5.001	Prefix /16 announcements	0.000	Prefix /16 withdrawals	1.000	Prefix /16 path updates	4.001
Prefix /17 update rate	6.002	Prefix /17 announcements	2.001	Prefix /17 withdrawals	1.000	Prefix /17 path updates	3.001
Prefix /18 update rate	15.004	Prefix /18 announcements	4.001	Prefix /18 withdrawals	3.001	Prefix /18 path updates	8.002
Prefix /19 update rate	20.006	Prefix /19 announcements	9.003	Prefix /19 withdrawals	0.000	Prefix /19 path updates	11.003
Prefix /20 update rate	37.010	Prefix /20 announcements	16.004	Prefix /20 withdrawals	5.001	Prefix /20 path updates	16.004
Prefix /21 update rate	15.004	Prefix /21 announcements	2.001	Prefix /21 withdrawals	2.001	Prefix /21 path updates	11.003
Prefix /22 update rate	49.014	Prefix /22 announcements	18.005	Prefix /22 withdrawals	2.001	Prefix /22 path updates	29.008
Prefix /23 update rate	32.009	Prefix /23 announcements	4.001	Prefix /23 withdrawals	4.001	Prefix /23 path updates	24.007
Prefix /24 update rate	165.046	Prefix /24 announcements	15.004	Prefix /24 withdrawals	28.008	Prefix /24 path updates	122.034
Prefix /25 update rate	297.083	Prefix /25 announcements	0.000	Prefix /25 withdrawals	0.000	Prefix /25 path updates	297.083
Prefix /26 update rate	500.139	Prefix /26 announcements	0.000	Prefix /26 withdrawals	0.000	Prefix /26 path updates	500.139
Prefix /27 update rate	236.066	Prefix /27 announcements	0.000	Prefix /27 withdrawals	0.000	Prefix /27 path updates	236.066
Prefix /28 update rate	109.030	Prefix /28 announcements	0.000	Prefix /28 withdrawals	0.000	Prefix /28 path updates	109.030
Prefix /29 update rate	34.009	Prefix /29 announcements	0.000	Prefix /29 withdrawals	0.000	Prefix /29 path updates	34.009
Prefix /30 update rate	7.002	Prefix /30 announcements	0.000	Prefix /30 withdrawals	0.000	Prefix /30 path updates	7.002
Prefix /31 update rate	0.000	Prefix /31 announcements	0.000	Prefix /31 withdrawals	0.000	Prefix /31 path updates	0.000
Prefix /32 update rate	0.000	Prefix /32 announcements	0.000	Prefix /32 withdrawals	0.000	Prefix /32 path updates	0.000

Path Updates - Breakdown by Update Type

Examines those updates that involved a change of AS Path and breaks this down into five categories:

A change of origin AS (origin)
A change in the origin's nexthop AS (remote change)
A change in the transit AS path (transit)
A change in the firsthop AS (Local change)
A change in AS prepending (Traffic Engineering)

Total	Data	Origin	Data	Origin Next Hop	Data	Transit	Data	First Hop	Data	Prepend	Data
Total Path Changes	535	Origin Paths	177	NextHop Paths	112	Transit Paths	206	Paths	40	Paths	0
Report
/16 Tot	4	/16 Org	0	/16 Nxt	3	/16 Trn	1	/16 Fst	0	/16 Prp	0
/17 Tot	3	/17 Org	0	/17 Nxt	3	/17 Trn	0	/17 Fst	0	/17 Prp	0
/18 Tot	8	/18 Org	0	/18 Nxt	6	/18 Trn	2	/18 Fst	0	/18 Prp	0
/19 Tot	11	/19 Org	0	/19 Nxt	8	/19 Trn	3	/19 Fst	0	/19 Prp	0
/20 Tot	16	/20 Org	0	/20 Nxt	11	/20 Trn	5	/20 Fst	0	/20 Prp	0
/21 Tot	11	/21 Org	0	/21 Nxt	6	/21 Trn	5	/21 Fst	0	/21 Prp	0
/22 Tot	29	/22 Org	0	/22 Nxt	6	/22 Trn	23	/22 Fst	0	/22 Prp	0
/23 Tot	24	/23 Org	0	/23 Nxt	8	/23 Trn	16	/23 Fst	0	/23 Prp	0
/24 Tot	122	/24 Org	0	/24 Nxt	38	/24 Trn	83	/24 Fst	1	/24 Prp	0
/25 Tot	297	/25 Org	76	/25 Nxt	38	/25 Trn	0	/25 Fst	183	/25 Prp	0
/26 Tot	500	/26 Org	87	/26 Nxt	65	/26 Trn	0	/26 Fst	348	/26 Prp	0
/27 Tot	236	/27 Org	70	/27 Nxt	35	/27 Trn	0	/27 Fst	131	/27 Prp	0
/28 Tot	109	/28 Org	7	/28 Nxt	18	/28 Trn	0	/28 Fst	84	/28 Prp	0
/29 Tot	34	/29 Org	0	/29 Nxt	2	/29 Trn	0	/29 Fst	32	/29 Prp	0
/30 Tot	7	/30 Org	4	/30 Nxt	2	/30 Trn	0	/30 Fst	1	/30 Prp	0
/31 Tot	0	/31 Org	0	/31 Nxt	0	/31 Trn	0	/31 Fst	0	/31 Prp	0
/32 Tot	0	/32 Org	0	/32 Nxt	0	/32 Trn	0	/32 Fst	0	/32 Prp	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 Reports	Data Sets(txt)	Percentage Reports	Data
Originating Addresses AS Count	(data)	Originating Addresses % AS Count	(data)
AS's announcing span of /5	4	% AS's announcing span of /5	0.0001
AS's announcing span of /6	9	% AS's announcing span of /6	0.0003
AS's announcing span of /7	20	% AS's announcing span of /7	0.0006
AS's announcing span of /8	22	% AS's announcing span of /8	0.0007
AS's announcing span of /9	48	% AS's announcing span of /9	0.0014
AS's announcing span of /10	73	% AS's announcing span of /10	0.0022
AS's announcing span of /11	152	% AS's announcing span of /11	0.0045
AS's announcing span of /12	213	% AS's announcing span of /12	0.0063
AS's announcing span of /13	342	% AS's announcing span of /13	0.0101
AS's announcing span of /14	725	% AS's announcing span of /14	0.0215
AS's announcing span of /15	1480	% AS's announcing span of /15	0.0438
AS's announcing span of /16	1535	% AS's announcing span of /16	0.0455
AS's announcing span of /17	1511	% AS's announcing span of /17	0.0447
AS's announcing span of /18	2382	% AS's announcing span of /18	0.0705
AS's announcing span of /19	3049	% AS's announcing span of /19	0.0903
AS's announcing span of /20	3439	% AS's announcing span of /20	0.1018
AS's announcing span of /21	3449	% AS's announcing span of /21	0.1021
AS's announcing span of /22	3630	% AS's announcing span of /22	0.1075
AS's announcing span of /23	3769	% AS's announcing span of /23	0.1116
AS's announcing span of /24	7889	% AS's announcing span of /24	0.2336
AS's announcing span of /25	16	% AS's announcing span of /25	0.0005
AS's announcing span of /26	9	% AS's announcing span of /26	0.0003
AS's announcing span of /27	2	% AS's announcing span of /27	0.0001
AS's announcing span of /28	0	% AS's announcing span of /28	0.0000
AS's announcing span of /29	0	% AS's announcing span of /29	0.0000
AS's announcing span of /30	0	% AS's announcing span of /30	0.0000
AS's announcing span of /31	0	% AS's announcing span of /31	0.0000
AS's announcing span of /32	0	% AS's announcing span of /32	0.0000

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 Report	Data
AS Adjacency Count	49799
Average AS Connectivity Degree (99598/33915)	2.9367
Average AS Connectivity IN:OUT Degree	0.1238
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:

24.0.0.0/8 accept prefix length <=20
61.0.0.0/8 accept prefix length <= 20
63.0.0.0/8 accept prefix length <= 20
64.0.0.0/8 accept prefix length <= 20
65.0.0.0/8 accept prefix length <= 20
66.0.0.0/8 accept prefix length <= 20
0.0.0.0/1 (0.0.0.0/8 through 126.0.0.0/8) accept prefix length <= 19
128.0.0.0/2 (128.0.0.0/8 through 191.0.0.0/8) accept prefix length <= 16
192.0.0.0/8 through 204.0.0.0/8 accept prefix length <=24
205.0.0.0/8 through 255.0.0.0/8 accept prefix length <=20

Aggregation possibilities are identified within this filtered prefix set.

Route Aggregation Reports	Data
Aggregation Potential Summary	(data)
Aggregation Potential Summary	(data)
Aggregation using prepended AS Path	194191	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Aggregation using AS Path	191611	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Aggregation using AS Origin	145857	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Maximal Aggregation	145859	Report (sort by %reduction)	Report (sort by reduction)	BGP Table

BGP Table

Table Summary Report

BGP Report

BGP data obtained from the boundary of AS65000

Report last updated at Sun Mar 21 23:10:08 2010 (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

The name is a reference to a graph of the data. If the data is a single series then this is a simple time-series plot. If the data is a multi-series vector, the first graph is a compound graph of the time series of each element in the vector, the second is a relative plot using a common start point and looking at the relative change in the value of each element of the vector. The third is a relative plot, normalizing the start point to zero and looking at the absolute change in each element of the vector. The last isa distribution graph.
The value is a reference to the text raw data file. The text file uses a column format, with the first column representing the measurement time. The time base is the number of seconds since 1 January 1970 UTC. If you wish to convert this to Microsoft Excel time format, then divide this time measurement by 86400 and add 25569, and then add the local offset to UTC