Internet2 - ISIS SPF Calculation Results

ISIS is the internal gateway routing protocol (IGP). It is used to help the backbone routers determine the best path to reach each other. Periodically ISIS runs the SPF (shortest-path-first) algorithm to help it recompute the best path though the network. ISIS also runs the SPF algorithm when it detects a circuit down. The Juniper routers log the results of the last 20 ISIS SPF calculations. They log both the time the calculation was run as well as how long it took to run the calculation, which is know as the convergence time. This application collects those ISIS SPF results from all of the Juniper routers every 3 hours and displays it as a table.

A white cell is a normal periodic SPF run.
A red cell is an SPF run as a result of a network event.
A yellow cell is an SPF run that took an unusually long amount of time to run.

Run Times Run Lengths Run Details

ISIS SPF Times
	seat	newy32aoa	wash	chic	atla	kans	salt	losa	hous
Run 0	19:11:33	19:10:30	18:51:41	19:06:03	19:12:14	19:07:10	19:03:11	19:08:01	18:59:59
Run 1	19:24:06	19:25:15	19:06:05	19:19:41	19:26:15	19:18:42	19:14:35	19:19:44	19:12:52
Run 2	19:36:49	19:39:42	19:19:39	19:34:19	19:37:49	19:30:45	19:29:30	19:34:23	19:27:35
Run 3	19:49:01	19:51:04	19:33:30	19:45:39	19:51:10	19:44:31	19:42:41	19:46:35	19:41:08
Run 4	20:00:31	20:03:23	19:47:17	19:59:52	20:04:06	19:55:59	19:57:19	19:58:07	19:53:12
Run 5	20:12:56	20:15:06	20:00:34	20:13:42	20:17:20	20:07:36	20:08:58	20:11:15	20:07:41
Run 6	20:26:14	20:28:24	20:15:15	20:25:40	20:30:40	20:19:53	20:22:26	20:24:02	20:22:29
Run 7	20:40:52	20:40:58	20:28:54	20:39:02	20:42:15	20:32:57	20:35:27	20:36:35	20:35:59
Run 8	20:54:43	20:54:00	20:41:56	20:52:12	20:56:04	20:47:30	20:47:17	20:48:31	20:50:35
Run 9	21:07:25	21:08:36	20:54:41	21:06:10	21:08:51	21:00:45	21:00:46	21:03:16	21:02:03
Run 10	21:19:10	21:20:56	21:07:57	21:19:33	21:23:00	21:14:34	21:12:12	21:17:22	21:16:58
Run 11	21:31:53	21:32:51	21:19:33	21:31:42	21:36:49	21:28:01	21:26:57	21:29:18	21:30:19
Run 12	21:44:34	21:46:12	21:34:14	21:44:24	21:48:13	21:42:42	21:40:46	21:43:01	21:45:08
Run 13	21:57:28	22:00:58	21:48:56	21:57:17	22:02:50	21:54:33	21:55:31	21:55:36	21:58:47
Run 14	22:12:13	22:13:30	22:03:28	22:09:50	22:15:01	22:08:33	22:09:58	22:10:02	22:13:43
Run 15	22:23:33	22:24:49	22:15:22	22:24:30	22:29:52	22:20:04	22:21:40	22:24:52	22:26:04
Run 16	22:36:11	22:38:03	22:27:50	22:36:03	22:41:25	22:32:27	22:34:42	22:37:27	22:37:48
Run 17	22:49:10	22:50:47	22:42:23	22:50:40	22:53:22	22:46:14	22:46:29	22:50:06	22:52:35
Run 18	23:02:35	23:02:55	22:54:16	23:03:23	23:05:58	23:00:07	22:59:48	23:05:00	23:07:33
Run 19	23:14:19	23:14:20	23:05:58	23:15:33	23:19:42	23:13:42	23:14:43	23:19:51	23:19:22

ISIS SPF Lengths
seat newy32aoa wash chic atla kans salt losa hous

Run 0 0.001635 0.001745 0.001761 0.001918 0.002015 0.007815 0.001735 0.002021 0.002074

Run 1 0.001646 0.001730 0.001845 0.002353 0.001994 0.001871 0.001741 0.001704 0.001727

Run 2 0.001834 0.001707 0.001915 0.002001 0.001715 0.001786 0.001741 0.001780 0.001865

Run 3 0.001927 0.001793 0.001756 0.002178 0.001690 0.003504 0.001913 0.002006 0.001711

Run 4 0.001636 0.001736 0.002055 0.001841 0.001704 0.001756 0.001749 0.001688 0.001830

Run 5 0.001789 0.001967 0.001787 0.002107 0.001871 0.001703 0.001729 0.001994 0.001909

Run 6 0.001846 0.001734 0.001976 0.002032 0.001693 0.001867 0.001855 0.002213 0.002722

Run 7 0.001716 0.001871 0.001826 0.005013 0.001691 0.001687 0.001760 0.001969 0.001897

Run 8 0.002011 0.001896 0.001774 0.001818 0.001883 0.002025 0.001715 0.001990 0.002132

Run 9 0.008582 0.001774 0.001981 0.002264 0.001701 0.001699 0.001968 0.001699 0.001696

Run 10 0.001650 0.001747 0.001759 0.001844 0.001692 0.002019 0.001755 0.001690 0.001925

Run 11 0.001638 0.002070 0.002253 0.003452 0.001813 0.001710 0.001751 0.002254 0.001901

Run 12 0.001652 0.002730 0.001866 0.001836 0.002069 0.001932 0.002072 0.001683 0.001893

Run 13 0.001647 0.001734 0.001974 0.002451 0.001747 0.001683 0.001731 0.001834 0.001957

Run 14 0.001938 0.001723 0.001833 0.002055 0.002046 0.001956 0.001748 0.001882 0.001702

Run 15 0.001716 0.001853 0.001890 0.001846 0.001740 0.001675 0.001742 0.001697 0.002016

Run 16 0.001674 0.001724 0.001902 0.001880 0.001701 0.001692 0.001867 0.001695 0.001718

Run 17 0.001691 0.001755 0.001748 0.002474 0.001688 0.001800 0.001742 0.001887 0.002132

Run 18 0.001657 0.002240 0.002243 0.001861 0.001836 0.001699 0.001737 0.002066 0.001980

Run 19 0.001653 0.001817 0.001781 0.002096 0.001716 0.001894 0.001862 0.001936 0.001703

Min 0.001635 0.001707 0.001748 0.001818 0.001688 0.001675 0.001715 0.001683 0.001696

Max 0.008582 0.002730 0.002253 0.005013 0.002069 0.007815 0.002072 0.002254 0.002722

Avg 0.0020769 0.0018673 0.00189625 0.002266 0.00180025 0.00218865 0.00179565 0.0018844 0.0019245

ISIS SPF Lengths
	seat	newy32aoa	wash	chic	atla	kans	salt	losa	hous
Run 0	0.001635	0.001745	0.001761	0.001918	0.002015	0.007815	0.001735	0.002021	0.002074
Run 1	0.001646	0.001730	0.001845	0.002353	0.001994	0.001871	0.001741	0.001704	0.001727
Run 2	0.001834	0.001707	0.001915	0.002001	0.001715	0.001786	0.001741	0.001780	0.001865
Run 3	0.001927	0.001793	0.001756	0.002178	0.001690	0.003504	0.001913	0.002006	0.001711
Run 4	0.001636	0.001736	0.002055	0.001841	0.001704	0.001756	0.001749	0.001688	0.001830
Run 5	0.001789	0.001967	0.001787	0.002107	0.001871	0.001703	0.001729	0.001994	0.001909
Run 6	0.001846	0.001734	0.001976	0.002032	0.001693	0.001867	0.001855	0.002213	0.002722
Run 7	0.001716	0.001871	0.001826	0.005013	0.001691	0.001687	0.001760	0.001969	0.001897
Run 8	0.002011	0.001896	0.001774	0.001818	0.001883	0.002025	0.001715	0.001990	0.002132
Run 9	0.008582	0.001774	0.001981	0.002264	0.001701	0.001699	0.001968	0.001699	0.001696
Run 10	0.001650	0.001747	0.001759	0.001844	0.001692	0.002019	0.001755	0.001690	0.001925
Run 11	0.001638	0.002070	0.002253	0.003452	0.001813	0.001710	0.001751	0.002254	0.001901
Run 12	0.001652	0.002730	0.001866	0.001836	0.002069	0.001932	0.002072	0.001683	0.001893
Run 13	0.001647	0.001734	0.001974	0.002451	0.001747	0.001683	0.001731	0.001834	0.001957
Run 14	0.001938	0.001723	0.001833	0.002055	0.002046	0.001956	0.001748	0.001882	0.001702
Run 15	0.001716	0.001853	0.001890	0.001846	0.001740	0.001675	0.001742	0.001697	0.002016
Run 16	0.001674	0.001724	0.001902	0.001880	0.001701	0.001692	0.001867	0.001695	0.001718
Run 17	0.001691	0.001755	0.001748	0.002474	0.001688	0.001800	0.001742	0.001887	0.002132
Run 18	0.001657	0.002240	0.002243	0.001861	0.001836	0.001699	0.001737	0.002066	0.001980
Run 19	0.001653	0.001817	0.001781	0.002096	0.001716	0.001894	0.001862	0.001936	0.001703
Min	0.001635	0.001707	0.001748	0.001818	0.001688	0.001675	0.001715	0.001683	0.001696
Max	0.008582	0.002730	0.002253	0.005013	0.002069	0.007815	0.002072	0.002254	0.002722
Avg	0.0020769	0.0018673	0.00189625	0.002266	0.00180025	0.00218865	0.00179565	0.0018844	0.0019245

Non-Periodic SPF Run Details

All SPF runs were Normal/Periodic.

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