	AS2 IPv6 BGP Table Data
	BGP data obtained from AS2. Report last updated at Fri May 22 14:45:13 2009 (Australian Eastern Time).		Other BGP Metrics

Active BGP entries (FIB)

Table Size Metrics

The trend of the size of the BGP Forwarding Table (FIB) and 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)	1860	Change in FIB Size	10	Change (%)	0.538
All BGP entries (RIB)	7116
RIB/FIB ratio (7116/1860)	3.8258
Valid entries	7116

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 (/64 equiv)	180566692659466
Total address space advertised (prefix)	16.6405
Percentage of IPv6 space advertised (180566692659466/18446744073709551615)	0.000979
Average address span	97078867021
Average address span (as prefix size)	27.5016
Average prefix length	36.8457

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	339	Specifics as % of FIB entries (339/1860)	18.2258
Specifics as % of address span (63445468739/180566692659466)	0.0351
Specifics where AS prepended Path matches aggregate	103	AS-P_Path-Match % (103/339)	30.38
AS Path matches aggregate	103	AS-Path-Match % (103/339)	30.3835
AS Origin matches aggregate	137	AS-Origin-Match % (137/339)	40.4130
Root Prefixes	1521
Root Prefix Tree Depth	(data)
Root Prefixes with depth 0	1518
Root Prefixes with depth 1	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	1425	ASes visible in only one AS path	1103
Origin only ASes	1081	Origin ASs announced via a single AS path	1048
Transit only ASes	45	Originating AS ATOM count	1380
Mixed ASes	299	Originating AS ATOM compression	0.7419
Multi-Origin Prefixes	4
ASes originating a single prefix	1199
Average entries per origin AS	1.3478	Maximum entries for an origin AS (AS1237)	34
Average address range span for an origin AS	130845429463.3812
Maximum address range for an origin AS (AS5511)	35188667056128
Maximum address range (prefix length) for an origin AS (AS5511)	19.00
Average address range span for an origin AS (pfx length)	27.0709

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	5549	Unique AS prepended Paths	5553
AS Paths used in FIB	1444	AS Paths using prepending	1333
AS paths associated with a single FIB entry	1280	AS Paths using private ASs	0
Average AS path length	4.4887	Maximum AS Path length	13
Average address weighted AS path length	3.7225	Maximum prepended AS Path length	14
Average entries per AS Path	0.3352	Average entries per FIB AS Path	1.2881
AS Paths per origin AS	4.0210	FIB AS Paths per origin AS	1.0464
AS PATH ATOM compression	0.7763

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 /19	2	% Prefix /19	0.11
Prefix count /20	4	% Prefix /20	0.22
Prefix count /21	3	% Prefix /21	0.16
Prefix count /22	1	% Prefix /22	0.05
Prefix count /24	1	% Prefix /24	0.05
Prefix count /25	1	% Prefix /25	0.05
Prefix count /26	5	% Prefix /26	0.27
Prefix count /27	2	% Prefix /27	0.11
Prefix count /28	7	% Prefix /28	0.38
Prefix count /30	3	% Prefix /30	0.16
Prefix count /31	1	% Prefix /31	0.05
Prefix count /32	1212	% Prefix /32	65.16
Prefix count /33	13	% Prefix /33	0.70
Prefix count /34	11	% Prefix /34	0.59
Prefix count /35	35	% Prefix /35	1.88
Prefix count /36	7	% Prefix /36	0.38
Prefix count /37	1	% Prefix /37	0.05
Prefix count /39	2	% Prefix /39	0.11
Prefix count /40	27	% Prefix /40	1.45
Prefix count /42	7	% Prefix /42	0.38
Prefix count /43	1	% Prefix /43	0.05
Prefix count /44	6	% Prefix /44	0.32
Prefix count /45	3	% Prefix /45	0.16
Prefix count /46	3	% Prefix /46	0.16
Prefix count /47	5	% Prefix /47	0.27
Prefix count /48	458	% Prefix /48	24.62
Prefix count /56	7	% Prefix /56	0.38
Prefix count /60	3	% Prefix /60	0.16
Prefix count /64	29	% Prefix /64	1.56

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 /19	2	% Prefix /19	0.16
Prefix count /20	4	% Prefix /20	0.32
Prefix count /21	3	% Prefix /21	0.24
Prefix count /22	1	% Prefix /22	0.08
Prefix count /24	1	% Prefix /24	0.08
Prefix count /25	1	% Prefix /25	0.08
Prefix count /26	5	% Prefix /26	0.40
Prefix count /27	2	% Prefix /27	0.16
Prefix count /28	7	% Prefix /28	0.57
Prefix count /30	3	% Prefix /30	0.24
Prefix count /32	1207	% Prefix /32	97.65
Prefix count /33	7	% Prefix /33	0.00
Prefix count /34	6	% Prefix /34	0.00
Prefix count /35	11	% Prefix /35	0.00
Prefix count /36	1	% Prefix /36	0.00
Prefix count /40	4	% Prefix /40	0.00
Prefix count /42	1	% Prefix /42	0.00
Prefix count /43	1	% Prefix /43	0.00
Prefix count /44	3	% Prefix /44	0.00
Prefix count /45	1	% Prefix /45	0.00
Prefix count /46	3	% Prefix /46	0.00
Prefix count /47	3	% Prefix /47	0.00
Prefix count /48	233	% Prefix /48	0.00
Prefix count /56	1	% Prefix /56	0.00
Prefix count /64	10	% Prefix /64	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	536870912	% Addresses at AS distance 0	0
Addresses at AS distance 1	17611514708225	% Addresses at AS distance 1	9
Addresses at AS distance 2	44711148453889	% Addresses at AS distance 2	24
Addresses at AS distance 3	89618296538433	% Addresses at AS distance 3	49
Addresses at AS distance 4	28091193753859	% Addresses at AS distance 4	15
Addresses at AS distance 5	393969926148	% Addresses at AS distance 5	0
Addresses at AS distance 6	150864199683	% Addresses at AS distance 6	0
Addresses at AS distance 7	44023611392	% Addresses at AS distance 7	0
Addresses at AS distance 8	131072	% Addresses at AS distance 8	0
Addresses at AS distance 9	4294967296	% Addresses at AS distance 9	0
Addresses at AS distance 10	0	% Addresses at AS distance 10	0
Addresses at AS distance 11	0	% Addresses at AS distance 11	0
Addresses at AS distance 12	4294967296	% Addresses at AS distance 12	0

Cumulative Address by AS distance	(data)	Cumulative % Address by AS distance	(data)
Addresses reachable within 0 AS hops	536870912	% Addresses reachable within 0 AS hops	0
Addresses reachable within 1 AS hops	17612051579137	% Addresses reachable within 1 AS hops	9
Addresses reachable within 2 AS hops	62323200033026	% Addresses reachable within 2 AS hops	34
Addresses reachable within 3 AS hops	151941496571459	% Addresses reachable within 3 AS hops	84
Addresses reachable within 4 AS hops	180032690325318	% Addresses reachable within 4 AS hops	99
Addresses reachable within 5 AS hops	180426660251466	% Addresses reachable within 5 AS hops	99
Addresses reachable within 6 AS hops	180577524451149	% Addresses reachable within 6 AS hops	99
Addresses reachable within 7 AS hops	180621548062541	% Addresses reachable within 7 AS hops	99
Addresses reachable within 8 AS hops	180621548193613	% Addresses reachable within 8 AS hops	99
Addresses reachable within 9 AS hops	180625843160909	% Addresses reachable within 9 AS hops	99
Addresses reachable within 10 AS hops	180625843160909	% Addresses reachable within 10 AS hops	99
Addresses reachable within 11 AS hops	180625843160909	% Addresses reachable within 11 AS hops	99
Addresses reachable within 12 AS hops	180630138128205	% Addresses reachable within 12 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	4	% ASes reachable at 1 AS hops	0
ASes reachable at 2 AS hops	106	% ASes reachable at 2 AS hops	7
ASes reachable at 3 AS hops	699	% ASes reachable at 3 AS hops	49
ASes reachable at 4 AS hops	432	% ASes reachable at 4 AS hops	30
ASes reachable at 5 AS hops	136	% ASes reachable at 5 AS hops	9
ASes reachable at 6 AS hops	32	% ASes reachable at 6 AS hops	2
ASes reachable at 7 AS hops	12	% ASes reachable at 7 AS hops	0
ASes reachable at 8 AS hops	1	% ASes reachable at 8 AS hops	0
ASes reachable at 9 AS hops	0	% ASes reachable at 9 AS hops	0
ASes reachable at 10 AS hops	0	% ASes reachable at 10 AS hops	0
ASes reachable at 11 AS hops	1	% ASes reachable at 11 AS hops	0
ASes reachable at 12 AS hops	1	% ASes reachable at 12 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
ASes reachable by 1 AS hops	5	Cumulative % ASes by AS hops 1	0
ASes reachable by 2 AS hops	111	Cumulative % ASes by AS hops 2	7
ASes reachable by 3 AS hops	810	Cumulative % ASes by AS hops 3	56
ASes reachable by 4 AS hops	1242	Cumulative % ASes by AS hops 4	87
ASes reachable by 5 AS hops	1378	Cumulative % ASes by AS hops 5	96
ASes reachable by 6 AS hops	1410	Cumulative % ASes by AS hops 6	98
ASes reachable by 7 AS hops	1422	Cumulative % ASes by AS hops 7	99
ASes reachable by 8 AS hops	1423	Cumulative % ASes by AS hops 8	99
ASes reachable by 9 AS hops	1423	Cumulative % ASes by AS hops 9	99
ASes reachable by 10 AS hops	1423	Cumulative % ASes by AS hops 10	99
ASes reachable by 11 AS hops	1424	Cumulative % ASes by AS hops 11	99
ASes reachable by 12 AS hops	1425	Cumulative % ASes by AS hops 12	100

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	7780	New Entries	1139	Removed Entries	5232	Updated Entries	1409
		Report		Report		Report
Address Span	1816231973	Address Span	589826	Address Span	709220838	Address Span	1106421309
Average address span per update	233448	Avg Span	517	Avg Span	135554	Avg Span	785252
Average prefix size updated	50.03	Average prefix size	128.19	Average prefix size	36.58	Average prefix size	36.82
Per-Prefix updates	(data)	Prefix announcements	(data)	Prefix withdrawals	(data)	Prefix path updates	(data)
Prefix /16 total	3	Prefix /16 announcements	0	Prefix /16 withdrawals	3	Prefix /16 path updates	0
Prefix /19 total	7	Prefix /19 announcements	0	Prefix /19 withdrawals	5	Prefix /19 path updates	2
Prefix /20 total	16	Prefix /20 announcements	0	Prefix /20 withdrawals	12	Prefix /20 path updates	4
Prefix /21 total	11	Prefix /21 announcements	0	Prefix /21 withdrawals	8	Prefix /21 path updates	3
Prefix /22 total	4	Prefix /22 announcements	0	Prefix /22 withdrawals	3	Prefix /22 path updates	1
Prefix /24 total	4	Prefix /24 announcements	0	Prefix /24 withdrawals	3	Prefix /24 path updates	1
Prefix /25 total	4	Prefix /25 announcements	0	Prefix /25 withdrawals	3	Prefix /25 path updates	1
Prefix /26 total	20	Prefix /26 announcements	0	Prefix /26 withdrawals	15	Prefix /26 path updates	5
Prefix /27 total	7	Prefix /27 announcements	0	Prefix /27 withdrawals	6	Prefix /27 path updates	1
Prefix /28 total	28	Prefix /28 announcements	0	Prefix /28 withdrawals	21	Prefix /28 path updates	7
Prefix /30 total	12	Prefix /30 announcements	0	Prefix /30 withdrawals	9	Prefix /30 path updates	3
Prefix /31 total	4	Prefix /31 announcements	0	Prefix /31 withdrawals	3	Prefix /31 path updates	1
Prefix /32 total	4396	Prefix /32 announcements	2	Prefix /32 withdrawals	3477	Prefix /32 path updates	917
Prefix /33 total	49	Prefix /33 announcements	0	Prefix /33 withdrawals	37	Prefix /33 path updates	12
Prefix /34 total	39	Prefix /34 announcements	0	Prefix /34 withdrawals	31	Prefix /34 path updates	8
Prefix /35 total	120	Prefix /35 announcements</

AS2 IPv6 BGP Table Data