May 2019 - Test - lists.nanog.org

Widespread Firefox issues
by Brielle Bruns 04 May '19

04 May '19

Just an FYI since this is bound to impact users: https://bugzilla.mozilla.org/show_bug.cgi?id=1548973 Basically, Mozilla forgot to renew an intermediate cert, and people's Firefox browsers have mass-disabled addons. Whoops. -- Brielle Bruns The Summit Open Source Development Group http://www.sosdg.org / http://www.ahbl.org

17 31

Looking for audiovisual resources on Clos topologies
by Sadiq Saif 03 May '19

03 May '19

Hi all, I recently read a APNIC blog post about LINE's network redesign [0] into a Clos topology. That lead to me RFC7938 [1] which has a fairly minimal explanation of the topology design itself. I was wondering if there are any NANOG or other *NOG talks explaining the Clos topology in a more audiovisual format. I figured I ask here before I go looking on a search engine. Thanks in advance. [0] - https://blog.apnic.net/2019/05/03/simplicity-is-key-to-network-redesign-for… [1] - https://tools.ietf.org/html/rfc7938 -- Sadiq Saif https://sadiqsaif.com

4 4

Weekly Routing Table Report
by cscora＠apnic.net 03 May '19

03 May '19

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. Routing Table Report 04:00 +10GMT Sat 04 May, 2019 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 749324 Prefixes after maximum aggregation (per Origin AS): 287369 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 360025 Total ASes present in the Internet Routing Table: 64054 Prefixes per ASN: 11.70 Origin-only ASes present in the Internet Routing Table: 55085 Origin ASes announcing only one prefix: 23745 Transit ASes present in the Internet Routing Table: 8969 Transit-only ASes present in the Internet Routing Table: 278 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 41 Max AS path prepend of ASN ( 22394) 38 Prefixes from unregistered ASNs in the Routing Table: 25 Number of instances of unregistered ASNs: 29 Number of 32-bit ASNs allocated by the RIRs: 26816 Number of 32-bit ASNs visible in the Routing Table: 21880 Prefixes from 32-bit ASNs in the Routing Table: 96358 Number of bogon 32-bit ASNs visible in the Routing Table: 22 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 247 Number of addresses announced to Internet: 2849998464 Equivalent to 169 /8s, 223 /16s and 134 /24s Percentage of available address space announced: 77.0 Percentage of allocated address space announced: 77.0 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.2 Total number of prefixes smaller than registry allocations: 251361 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 201228 Total APNIC prefixes after maximum aggregation: 58486 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 197671 Unique aggregates announced from the APNIC address blocks: 82489 APNIC Region origin ASes present in the Internet Routing Table: 9671 APNIC Prefixes per ASN: 20.44 APNIC Region origin ASes announcing only one prefix: 2706 APNIC Region transit ASes present in the Internet Routing Table: 1448 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 29 Number of APNIC region 32-bit ASNs visible in the Routing Table: 4684 Number of APNIC addresses announced to Internet: 773599104 Equivalent to 46 /8s, 28 /16s and 47 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-139577 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 223479 Total ARIN prefixes after maximum aggregation: 104656 ARIN Deaggregation factor: 2.14 Prefixes being announced from the ARIN address blocks: 222695 Unique aggregates announced from the ARIN address blocks: 105382 ARIN Region origin ASes present in the Internet Routing Table: 18450 ARIN Prefixes per ASN: 12.07 ARIN Region origin ASes announcing only one prefix: 6855 ARIN Region transit ASes present in the Internet Routing Table: 1900 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 2686 Number of ARIN addresses announced to Internet: 1078406272 Equivalent to 64 /8s, 71 /16s and 44 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-399260 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 206596 Total RIPE prefixes after maximum aggregation: 98079 RIPE Deaggregation factor: 2.11 Prefixes being announced from the RIPE address blocks: 202985 Unique aggregates announced from the RIPE address blocks: 120427 RIPE Region origin ASes present in the Internet Routing Table: 26018 RIPE Prefixes per ASN: 7.80 RIPE Region origin ASes announcing only one prefix: 11553 RIPE Region transit ASes present in the Internet Routing Table: 3722 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 34 Number of RIPE region 32-bit ASNs visible in the Routing Table: 8065 Number of RIPE addresses announced to Internet: 719061632 Equivalent to 42 /8s, 220 /16s and 2 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-210331 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 96624 Total LACNIC prefixes after maximum aggregation: 21831 LACNIC Deaggregation factor: 4.43 Prefixes being announced from the LACNIC address blocks: 97999 Unique aggregates announced from the LACNIC address blocks: 42441 LACNIC Region origin ASes present in the Internet Routing Table: 8350 LACNIC Prefixes per ASN: 11.74 LACNIC Region origin ASes announcing only one prefix: 2198 LACNIC Region transit ASes present in the Internet Routing Table: 1539 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 31 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 5896 Number of LACNIC addresses announced to Internet: 173846016 Equivalent to 10 /8s, 92 /16s and 174 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-270748 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 21371 Total AfriNIC prefixes after maximum aggregation: 4297 AfriNIC Deaggregation factor: 4.97 Prefixes being announced from the AfriNIC address blocks: 27727 Unique aggregates announced from the AfriNIC address blocks: 9058 AfriNIC Region origin ASes present in the Internet Routing Table: 1270 AfriNIC Prefixes per ASN: 21.83 AfriNIC Region origin ASes announcing only one prefix: 433 AfriNIC Region transit ASes present in the Internet Routing Table: 240 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 24 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 549 Number of AfriNIC addresses announced to Internet: 104825856 Equivalent to 6 /8s, 63 /16s and 132 /24s AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7545 4735 546 552 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4569 4192 74 ERX-CERNET-BKB China Education and Rese 7552 3150 1307 56 VIETEL-AS-AP Viettel Group, VN 45899 3027 1737 111 VNPT-AS-VN VNPT Corp, VN 9829 2733 1496 551 BSNL-NIB National Internet Backbone, IN 4766 2545 11120 761 KIXS-AS-KR Korea Telecom, KR 9808 2448 8699 27 CMNET-GD Guangdong Mobile Communication 9394 2175 4898 27 CTTNET China TieTong Telecommunications 4755 2132 429 185 TATACOMM-AS TATA Communications formerl 9498 2054 427 171 BBIL-AP BHARTI Airtel Ltd., IN Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 11492 3649 238 584 CABLEONE - CABLE ONE, INC., US 6327 3636 1325 93 SHAW - Shaw Communications Inc., CA 22773 3398 2974 157 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 7155 3236 280 25 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2596 5494 1130 AMAZON-02 - Amazon.com, Inc., US 16625 2442 1337 1842 AKAMAI-AS - Akamai Technologies, Inc., 30036 2155 349 205 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom 20115 2147 2749 525 CHARTER-20115 - Charter Communications, 18566 2107 405 108 MEGAPATH5-US - MegaPath Corporation, US 5650 2086 3074 1462 FRONTIER-FRTR - Frontier Communications Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 5430 1629 140 UNI2-AS, ES 39891 3778 203 20 ALJAWWALSTC-AS, SA 8551 3225 378 45 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 20940 2640 520 1908 AKAMAI-ASN1, US 12389 2242 2222 642 ROSTELECOM-AS, RU 34984 2079 343 541 TELLCOM-AS, TR 9121 1668 1692 18 TTNET, TR 13188 1605 100 47 TRIOLAN, UA 9009 1448 151 787 M247, GB 8402 1233 545 15 CORBINA-AS OJSC "Vimpelcom", RU Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 5732 3354 602 Uninet S.A. de C.V., MX 10620 3434 535 419 Telmex Colombia S.A., CO 11830 2708 384 34 Instituto Costarricense de Electricidad 7303 1474 1012 253 Telecom Argentina S.A., AR 28573 1361 2234 200 CLARO S.A., BR 6503 1261 433 53 Axtel, S.A.B. de C.V., MX 6147 1199 377 30 Telefonica del Peru S.A.A., PE 3816 1086 523 143 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 13999 964 512 241 Mega Cable, S.A. de C.V., MX 11172 938 144 62 Alestra, S. de R.L. de C.V., MX Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1179 393 21 LINKdotNET-AS, EG 37611 906 107 9 Afrihost, ZA 24835 888 648 21 RAYA-AS, EG 36992 852 1531 68 ETISALAT-MISR, EG 36903 827 416 126 MT-MPLS, MA 8452 696 1731 19 TE-AS TE-AS, EG 29571 512 68 12 ORANGE-COTE-IVOIRE, CI 37492 470 470 57 ORANGE-, TN 15706 421 32 6 Sudatel, SD 37342 420 32 1 MOVITEL, MZ Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 5732 3354 602 Uninet S.A. de C.V., MX 12479 5430 1629 140 UNI2-AS, ES 7545 4735 546 552 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4569 4192 74 ERX-CERNET-BKB China Education and Rese 39891 3778 203 20 ALJAWWALSTC-AS, SA 11492 3649 238 584 CABLEONE - CABLE ONE, INC., US 6327 3636 1325 93 SHAW - Shaw Communications Inc., CA 10620 3434 535 419 Telmex Colombia S.A., CO 22773 3398 2974 157 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 7155 3236 280 25 VIASAT-SP-BACKBONE - ViaSat,Inc., US Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 12479 5430 5290 UNI2-AS, ES 4538 4569 4495 ERX-CERNET-BKB China Education and Research Net 7545 4735 4183 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 3778 3758 ALJAWWALSTC-AS, SA 6327 3636 3543 SHAW - Shaw Communications Inc., CA 22773 3398 3241 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7155 3236 3211 VIASAT-SP-BACKBONE - ViaSat,Inc., US 8551 3225 3180 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 7552 3150 3094 VIETEL-AS-AP Viettel Group, VN 11492 3649 3065 CABLEONE - CABLE ONE, INC., US Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 230105 UNALLOCATED 38.110.79.0/24 23015 CMC180-TOR-AS - Cambridge Merc 266842 UNALLOCATED 45.238.156.0/22 265680 HNTELCO S.A, HN 65550 DOCUMENT 81.8.34.0/24 15924 BORUSANTELEKOM-AS, TR 65550 DOCUMENT 81.8.35.0/24 15924 BORUSANTELEKOM-AS, TR 65549 DOCUMENT 117.239.163.0/24 65544 UNKNOWN 64339 UNALLOCATED 143.0.108.0/22 18747 IFX18747 - IFX Corporation, US 65551 DOCUMENT 149.165.246.0/24 19782 INDIANAGIGAPOP - Indiana Unive 64355 UNALLOCATED 156.40.196.0/24 30387 NIH-NET-NCCS - National Instit 64011 UNALLOCATED 166.133.128.0/18 20057 ATT-MOBILITY-LLC-AS20057 - AT& 64011 UNALLOCATED 166.133.192.0/18 20057 ATT-MOBILITY-LLC-AS20057 - AT& Complete listing at http://thyme.rand.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 27.100.7.0/24 56096 UNKNOWN 27.126.156.0/22 55827 UNKNOWN 27.126.156.0/23 55827 UNKNOWN 27.126.158.0/23 55827 UNKNOWN 41.76.136.0/22 37500 -Reserved AS-, ZZ 41.76.140.0/22 37500 -Reserved AS-, ZZ 41.78.92.0/22 14988 BTC-GATE1, BW 41.78.180.0/23 37265 -Reserved AS-, ZZ 41.220.48.0/20 36900 -Reserved AS-, ZZ 41.242.92.0/24 37643 -Reserved AS-, ZZ Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:12 /9:10 /10:37 /11:100 /12:294 /13:570 /14:1131 /15:1907 /16:13322 /17:7970 /18:13900 /19:25647 /20:40217 /21:46333 /22:93436 /23:76231 /24:427307 /25:900 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 12479 4359 5430 UNI2-AS, ES 6327 3411 3636 SHAW - Shaw Communications Inc., CA 39891 2946 3778 ALJAWWALSTC-AS, SA 11492 2857 3649 CABLEONE - CABLE ONE, INC., US 8551 2679 3225 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2637 3398 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7155 2602 3236 VIASAT-SP-BACKBONE - ViaSat,Inc., US 11830 2053 2708 Instituto Costarricense de Electricidad y Telec 18566 2002 2107 MEGAPATH5-US - MegaPath Corporation, US 30036 1905 2155 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1602 2:993 3:6 4:21 5:3157 6:47 7:1 8:1294 9:1 12:1802 13:338 14:1989 15:37 16:4 17:258 18:58 20:51 23:2686 24:2500 25:2 27:2462 31:1973 32:100 35:36 36:853 37:3030 38:1734 39:297 40:121 41:3284 42:781 43:2007 44:148 45:7425 46:3260 47:257 49:1364 50:1107 51:322 52:1012 54:282 55:702 56:6 57:44 58:1711 59:1062 60:499 61:2126 62:2184 63:1831 64:4963 65:2228 66:4835 67:2776 68:1157 69:3524 70:1349 71:622 72:2627 74:2748 75:993 76:555 77:1773 78:1810 79:2276 80:1808 81:1493 82:1126 83:953 84:1135 85:2281 86:523 87:1551 88:1052 89:2629 90:216 91:6569 92:1384 93:2481 94:2485 95:3248 96:943 97:343 98:960 99:678 100:87 101:919 102:553 103:21044 104:3553 105:257 106:782 107:1785 108:699 109:3721 110:1658 111:1977 112:1490 113:1402 114:1139 115:1691 116:1749 117:1906 118:2077 119:1629 120:1020 121:1040 122:2350 123:1651 124:1472 125:1952 128:1246 129:826 130:536 131:1811 132:771 133:222 134:1092 135:241 136:574 137:753 138:2063 139:877 140:645 141:880 142:792 143:1041 144:893 145:492 146:1262 147:841 148:1709 149:924 150:788 151:1013 152:1061 153:335 154:2910 155:919 156:1633 157:975 158:658 159:1952 160:1607 161:929 162:2751 163:812 164:1194 165:1589 166:435 167:1410 168:3271 169:874 170:4105 171:583 172:1583 173:2200 174:1042 175:923 176:2330 177:4211 178:2540 179:1399 180:2059 181:2409 182:2694 183:1091 184:2054 185:15073 186:3674 187:2487 188:2957 189:1968 190:8223 191:1629 192:10066 193:6673 194:5433 195:4118 196:3090 197:1777 198:5888 199:5971 200:7074 201:5106 202:10414 203:10078 204:4553 205:3039 206:3237 207:3234 208:3947 209:4239 210:3915 211:2011 212:3116 213:2958 214:1109 215:55 216:5926 217:2235 218:878 219:587 220:1856 221:969 222:987 223:1363 End of report

1 0

is dnswl dead?
by Randy Bush 03 May '19

03 May '19

% /usr/local/bin/rsync --times rsync2.dnswl.org::dnswl/bind-dnswl-nons.zone /var/dns/primary/org.dnswl rsync: read error: Connection reset by peer (54) rsync error: error in socket IO (code 10) at io.c(785) [Receiver=3.1.3] this has been going on for a while. admins do not respond to email. and yes, i paid. would be a bummer. was useful. randy

4 5

Re: NTP question
by Scott Weeks 02 May '19

02 May '19

> But wait. What is the GPS constellation goes down? > THEN we have bigger problems :) > -------------------------------------------------- > > > What if the US military intentionally messes with > the signal to thwart the advances of an enemy who > is using GPS in their attack? ;-) ------------------------ --- mel(a)beckman.org wrote: Enemies aren’t dependent on US GPS, by the way. lol! ----------------------------------------------- Oops, but still from the second link: "...which could be disabled or degraded by their operators at any time" Most big countries say the same: "...will provide an alternative global navigation satellite system..." scott Details for the intrested. https://en.wikipedia.org/wiki/GLONASS "Russian...provides an alternative to GPS and is the second navigational system in operation with global coverage and of comparable precision. https://en.wikipedia.org/wiki/Galileo_(satellite_navigation) "...live in 2016,[4] created by the European Union" "...so European nations do not have to rely on the U.S. GPS, or the Russian GLONASS systems, which could be disabled or degraded by their operators at any time" https://en.wikipedia.org/wiki/BeiDou "a Chinese satellite navigation system....Beidou-1 was decommissioned at the end of 2012." "BeiDou-2, became operational in China in December 2011 with a partial constellation of 10 satellites in orbit. Since December 2012, it has been offering services to customers in the Asia-Pacific region." "In 2015, China started the build-up of the third generation BeiDou system (BeiDou-3) for global coverage constellation. The first BDS-3 satellite was launched on 30 March 2015.[5] As of October 2018, fifteen BDS-3 satellites have been launched[6]. BeiDou-3 will eventually consist of 35 satellites and is expected to provide global services upon completion in 2020. When fully completed, BeiDou will provide an alternative global navigation satellite system to the United States owned Global Positioning System (GPS),[7][8] the Russian GLONASS or European Galileo systems and is expected to be more accurate than these https://en.wikipedia.org/wiki/Indian_Regional_Navigation_Satellite_System "...is an autonomous regional satellite navigation system that provides accurate real-time positioning and timing services.[4] It covers India and a region extending 1,500 km (930 mi) around it, with plans for further extension." https://en.wikipedia.org/wiki/Quasi-Zenith_Satellite_System "...a project of the Japanese government for the development of a four-satellite regional time transfer system and a satellite-based augmentation system for the United States operated Global Positioning System (GPS) to be receivable in the Asia-Oceania regions, with a focus on Japan.

2 1

Re: NTP question
by Scott Weeks 02 May '19

02 May '19

--- mel(a)beckman.org wrote: From: Mel Beckman <mel(a)beckman.org> But wait. What is the GPS constellation goes down? THEN we have bigger problems :) -------------------------------------------------- What if the US military intentionally messes with the signal to thwart the advances of an enemy who is using GPS in their attack? ;-) scott

2 1

Re: NTP via GPS
by Scott Weeks 02 May '19

02 May '19

--- fkittred(a)gwi.net wrote: From: Fletcher Kittredge <fkittred(a)gwi.net> On Thu, May 2, 2019 at 12:12 AM Richard <rgolodner(a)infratection.com> wrote: > I found this article very helpful as I knew very little. I was smarter > for reading it though it may be to basic for many: > > https://timetoolsltd.com/gps/gps-ntp-server/ > It is basic and has at least some inaccuracies. I skimmed it and found: "The NTP protocol was originally developed for the LINUX operating system. " Kids these days.... so much history lost. For those under 60 revolutions of the sun: NTP and related protocols far pre-date Linux. Linux is a relatively late arriving implementation of Unix. The vast majority of intellectual property behind Linux was from prior variants of Unix; Linux was just a free, unencumbered version that was widely adopted. ----------------------------------------------- https://tools.ietf.org/pdf/rfc958.pdf Network Working Group D.L. MillsRequest for Comments: 958 M/A-COM Linkabit September 1985 Network Time Protocol (NTP) No linux in 1985... scott

1 0

Optical routes from MI-OH regionals
by Jason Lixfeld 02 May '19

02 May '19

Hi, Looking for someone who might have routes (lit or dark) from Detroit, MI to Columbus, OH preferably using a straight’ish shot from Toledo to Columbus. Most routes I’ve seen from the larger providers tend to run Toledo - Lima - Columbus or Toledo - Cleveland - Columbus, so I’m hoping a smaller regional player may have something more direct. Thanks in advance!

3 2

NTP via GPS
by Richard 02 May '19

02 May '19

I found this article very helpful as I knew very little. I was smarter for reading it though it may be to basic for many: https://timetoolsltd.com/gps/gps-ntp-server/ Richard

3 2

Re: NTP Question
by James R Cutler 02 May '19

02 May '19

On Wed, May 01, 2019 at 02:35:58PM -0700, Harlan Stenn wrote: > - Why do folks want to have one or more NTP server masters that have at > least 1 refclock on them in a data center, instead of having their data > center NTP server masters that only get time over the internet? Answers to that include: Keeping the Auditors happy Knowing that “everyone does it” - the vendor told them so Bragging rights (expensive hardware) Being unbothered by fighting with facilities for building penetrations and antenna mounts Misunderstanding the beauty and economy Dave Mills marvelous algorithms for consistent time based on multiple sources, even those connected via internet Unwillingness or inability to leverage other local resources capacity to run ntpd with minimal impact in order to have a good constellation of local NTP servers Willingness to farm out time service without doing a deep dive into why and how, just leaving the design to the appliance vendors This covers most of what I have encountered in providing enterprise time services for $dayjob+clients. I probably left out some significant points, but it has been a few years...

3 2