November 2017 - NANOG - lists.nanog.org

Weekly Routing Table Report
by cscora＠apnic.net 03 Nov '17

03 Nov '17

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, CaribNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG, IRNOG 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 Nov, 2017 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 667790 Prefixes after maximum aggregation (per Origin AS): 260185 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 322511 Total ASes present in the Internet Routing Table: 58913 Prefixes per ASN: 11.34 Origin-only ASes present in the Internet Routing Table: 50897 Origin ASes announcing only one prefix: 22398 Transit ASes present in the Internet Routing Table: 8016 Transit-only ASes present in the Internet Routing Table: 242 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 35 Max AS path prepend of ASN ( 55644) 31 Prefixes from unregistered ASNs in the Routing Table: 95 Number of instances of unregistered ASNs: 95 Number of 32-bit ASNs allocated by the RIRs: 20457 Number of 32-bit ASNs visible in the Routing Table: 16298 Prefixes from 32-bit ASNs in the Routing Table: 67031 Number of bogon 32-bit ASNs visible in the Routing Table: 112 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 398 Number of addresses announced to Internet: 2857996768 Equivalent to 170 /8s, 89 /16s and 145 /24s Percentage of available address space announced: 77.2 Percentage of allocated address space announced: 77.2 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 98.7 Total number of prefixes smaller than registry allocations: 219841 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 184650 Total APNIC prefixes after maximum aggregation: 52789 APNIC Deaggregation factor: 3.50 Prefixes being announced from the APNIC address blocks: 183706 Unique aggregates announced from the APNIC address blocks: 75656 APNIC Region origin ASes present in the Internet Routing Table: 8454 APNIC Prefixes per ASN: 21.73 APNIC Region origin ASes announcing only one prefix: 2365 APNIC Region transit ASes present in the Internet Routing Table: 1217 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 35 Number of APNIC region 32-bit ASNs visible in the Routing Table: 3310 Number of APNIC addresses announced to Internet: 766542560 Equivalent to 45 /8s, 176 /16s and 130 /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, 131072-137529 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: 200115 Total ARIN prefixes after maximum aggregation: 96679 ARIN Deaggregation factor: 2.07 Prefixes being announced from the ARIN address blocks: 201624 Unique aggregates announced from the ARIN address blocks: 94254 ARIN Region origin ASes present in the Internet Routing Table: 18002 ARIN Prefixes per ASN: 11.20 ARIN Region origin ASes announcing only one prefix: 6656 ARIN Region transit ASes present in the Internet Routing Table: 1778 Average ARIN Region AS path length visible: 3.8 Max ARIN Region AS path length visible: 23 Number of ARIN region 32-bit ASNs visible in the Routing Table: 2244 Number of ARIN addresses announced to Internet: 1110413088 Equivalent to 66 /8s, 47 /16s and 143 /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, 393216-397212 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: 179438 Total RIPE prefixes after maximum aggregation: 87653 RIPE Deaggregation factor: 2.05 Prefixes being announced from the RIPE address blocks: 175348 Unique aggregates announced from the RIPE address blocks: 105914 RIPE Region origin ASes present in the Internet Routing Table: 24546 RIPE Prefixes per ASN: 7.14 RIPE Region origin ASes announcing only one prefix: 11215 RIPE Region transit ASes present in the Internet Routing Table: 3486 Average RIPE Region AS path length visible: 4.5 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 6326 Number of RIPE addresses announced to Internet: 713549696 Equivalent to 42 /8s, 135 /16s and 231 /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 196608-207259 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: 85724 Total LACNIC prefixes after maximum aggregation: 19069 LACNIC Deaggregation factor: 4.50 Prefixes being announced from the LACNIC address blocks: 86983 Unique aggregates announced from the LACNIC address blocks: 39126 LACNIC Region origin ASes present in the Internet Routing Table: 6538 LACNIC Prefixes per ASN: 13.30 LACNIC Region origin ASes announcing only one prefix: 1816 LACNIC Region transit ASes present in the Internet Routing Table: 1198 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 25 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 4055 Number of LACNIC addresses announced to Internet: 172476000 Equivalent to 10 /8s, 71 /16s and 198 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-268700 + 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: 17766 Total AfriNIC prefixes after maximum aggregation: 3923 AfriNIC Deaggregation factor: 4.53 Prefixes being announced from the AfriNIC address blocks: 19731 Unique aggregates announced from the AfriNIC address blocks: 7234 AfriNIC Region origin ASes present in the Internet Routing Table: 1094 AfriNIC Prefixes per ASN: 18.04 AfriNIC Region origin ASes announcing only one prefix: 345 AfriNIC Region transit ASes present in the Internet Routing Table: 214 Average AfriNIC Region AS path length visible: 4.6 Max AfriNIC Region AS path length visible: 21 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 363 Number of AfriNIC addresses announced to Internet: 94518528 Equivalent to 5 /8s, 162 /16s and 61 /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 4538 5271 4192 76 ERX-CERNET-BKB China Education and Rese 7545 4110 410 412 TPG-INTERNET-AP TPG Telecom Limited, AU 4766 2788 11128 754 KIXS-AS-KR Korea Telecom, KR 17974 2783 900 78 TELKOMNET-AS2-AP PT Telekomunikasi Indo 9829 2766 1499 541 BSNL-NIB National Internet Backbone, IN 45899 2405 1494 147 VNPT-AS-VN VNPT Corp, VN 9808 2396 8699 32 CMNET-GD Guangdong Mobile Communication 9394 2176 4931 27 CTTNET China TieTong Telecommunications 7552 2126 1157 65 VIETEL-AS-AP Viettel Corporation, VN 4755 2113 422 221 TATACOMM-AS TATA Communications formerl 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 6327 3335 1323 86 SHAW - Shaw Communications Inc., CA 22773 3292 2952 157 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 18566 2175 405 107 MEGAPATH5-US - MegaPath Corporation, US 20115 2052 2289 421 CHARTER-NET-HKY-NC - Charter Communicat 6389 2045 3671 39 BELLSOUTH-NET-BLK - BellSouth.net Inc., 209 1942 5063 648 CENTURYLINK-US-LEGACY-QWEST - Qwest Com 16509 1881 4035 567 AMAZON-02 - Amazon.com, Inc., US 30036 1842 330 283 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom 11492 1627 237 571 CABLEONE - CABLE ONE, INC., US 701 1578 10589 627 UUNET - MCI Communications Services, In 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 39891 3387 186 23 ALJAWWALSTC-AS, SA 20940 2840 850 2051 AKAMAI-ASN1, US 8551 2499 378 42 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 34984 2064 329 427 TELLCOM-AS, TR 12389 1893 1694 717 ROSTELECOM-AS, RU 12479 1852 1064 87 UNI2-AS, ES 9121 1806 1691 17 TTNET, TR 13188 1605 100 46 TRIOLAN, UA 6849 1225 355 21 UKRTELNET, UA 8402 1206 544 14 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 10620 3549 538 282 Telmex Colombia S.A., CO 8151 3444 3421 582 Uninet S.A. de C.V., MX 11830 2333 367 41 Instituto Costarricense de Electricidad 6503 1598 437 53 Axtel, S.A.B. de C.V., MX 7303 1484 1016 194 Telecom Argentina S.A., AR 6147 1274 377 27 Telefonica del Peru S.A.A., PE 3816 1031 509 103 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 28573 1001 2289 179 CLARO S.A., BR 11172 913 126 86 Alestra, S. de R.L. de C.V., MX 18881 902 1060 26 TELEFÔNICA BRASIL S.A, BR 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 1226 398 49 LINKdotNET-AS, EG 37611 778 91 8 Afrihost, ZA 36903 704 354 142 MT-MPLS, MA 36992 668 1383 31 ETISALAT-MISR, EG 24835 515 850 15 RAYA-AS, EG 8452 506 1730 17 TE-AS TE-AS, EG 29571 431 36 10 CITelecom-AS, CI 37492 420 367 77 ORANGE-, TN 15399 352 35 7 WANANCHI-, KE 23889 302 103 14 MauritiusTelecom, MU 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 4538 5271 4192 76 ERX-CERNET-BKB China Education and Rese 7545 4110 410 412 TPG-INTERNET-AP TPG Telecom Limited, AU 10620 3549 538 282 Telmex Colombia S.A., CO 8151 3444 3421 582 Uninet S.A. de C.V., MX 39891 3387 186 23 ALJAWWALSTC-AS, SA 6327 3335 1323 86 SHAW - Shaw Communications Inc., CA 22773 3292 2952 157 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 20940 2840 850 2051 AKAMAI-ASN1, US 4766 2788 11128 754 KIXS-AS-KR Korea Telecom, KR 17974 2783 900 78 TELKOMNET-AS2-AP PT Telekomunikasi Indo Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 7545 4110 3698 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 3387 3364 ALJAWWALSTC-AS, SA 10620 3549 3267 Telmex Colombia S.A., CO 6327 3335 3249 SHAW - Shaw Communications Inc., CA 22773 3292 3135 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 8151 3444 2862 Uninet S.A. de C.V., MX 17974 2783 2705 TELKOMNET-AS2-AP PT Telekomunikasi Indonesia, I 8551 2499 2457 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 9808 2396 2364 CMNET-GD Guangdong Mobile Communication Co.Ltd. 11830 2333 2292 Instituto Costarricense de Electricidad y Telec Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 65602 UNALLOCATED 8.225.192.0/24 30372 SUNESYS2 - Sunesys, LLC, US 64525 PRIVATE 45.119.143.0/24 133275 GIGANTIC-AS Gigantic Infotel P 64525 PRIVATE 45.125.62.0/24 133275 GIGANTIC-AS Gigantic Infotel P 65530 PRIVATE 45.249.40.0/24 133720 SOFTCALLCOC-AS SOFT CALL CUST- 65001 PRIVATE 46.237.40.0/21 13118 ASN-YARTELECOM PJSC Rostelecom 65534 PRIVATE 58.68.109.0/24 10201 DWL-AS-IN Dishnet Wireless Lim 64513 PRIVATE 62.150.101.0/24 9155 QNET Kuwait, KW 290012147 UNALLOCATED 63.65.43.0/24 7046 RFC2270-UUNET-CUSTOMER - MCI C 3489671207 UNALLOCATED 64.53.36.0/24 10279 WCCL-AS - West Carolina Commun 65543 DOCUMENT 79.98.33.0/24 43950 SPILSBY-AS =================== Complete listing at http://thyme.rand.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 14.128.14.0/23 10247 NETLINE, ZA 14.192.48.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 14.192.49.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 14.192.50.0/23 10247 NETLINE, ZA 14.192.50.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 14.192.51.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 14.192.58.0/23 10247 NETLINE, ZA 27.100.7.0/24 56096 UNKNOWN 36.255.250.0/23 10247 NETLINE, ZA 41.78.180.0/23 37265 -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 /8:15 /9:13 /10:36 /11:106 /12:285 /13:552 /14:1053 /15:1865 /16:13397 /17:7746 /18:13608 /19:25259 /20:39160 /21:43306 /22:80799 /23:66438 /24:371936 /25:848 /26:619 /27:648 /28:35 /29:21 /30:16 /31:2 /32:27 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6327 3129 3335 SHAW - Shaw Communications Inc., CA 39891 2946 3387 ALJAWWALSTC-AS, SA 22773 2529 3292 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 18566 2070 2175 MEGAPATH5-US - MegaPath Corporation, US 8551 1963 2499 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 11830 1703 2333 Instituto Costarricense de Electricidad y Telec 30036 1613 1842 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi 10620 1537 3549 Telmex Colombia S.A., CO 11492 1447 1627 CABLEONE - CABLE ONE, INC., US 34984 1370 2064 TELLCOM-AS, TR Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1564 2:839 4:18 5:2502 6:36 8:1065 9:1 12:1854 13:165 14:1725 15:29 16:3 17:179 18:77 20:59 23:2483 24:1681 25:2 27:2367 31:1950 32:87 35:21 36:447 37:2383 38:1415 39:77 40:99 41:3045 42:517 43:1928 44:86 45:3193 46:2831 47:171 49:1336 50:1020 51:19 52:879 54:353 55:2 56:4 57:42 58:1570 59:992 60:360 61:2019 62:1741 63:1845 64:4587 65:2225 66:4453 67:2299 68:1185 69:3163 70:1129 71:588 72:2090 74:2622 75:389 76:411 77:1514 78:1553 79:1948 80:1415 81:1408 82:1060 83:747 84:986 85:1946 86:469 87:1214 88:862 89:2282 90:174 91:6227 92:1027 93:2316 94:2405 95:2675 96:648 97:352 98:957 99:101 100:153 101:1226 102:1 103:16102 104:3091 105:209 106:565 107:1737 108:831 109:2906 110:1508 111:1759 112:1244 113:1290 114:1053 115:1573 116:1645 117:1821 118:2148 119:1656 120:898 121:1075 122:2437 123:1880 124:1496 125:1818 128:957 129:663 130:446 131:1506 132:596 133:193 134:826 135:227 136:435 137:476 138:1954 139:540 140:381 141:671 142:747 143:911 144:806 145:189 146:1116 147:704 148:1490 149:613 150:712 151:995 152:720 153:300 154:925 155:747 156:716 157:746 158:600 159:1603 160:807 161:727 162:2504 163:513 164:991 165:1448 166:390 167:1335 168:3038 169:819 170:3541 171:392 172:1006 173:1896 174:818 175:775 176:1865 177:3962 178:2477 179:1124 180:2220 181:2103 182:2413 183:815 184:884 185:11268 186:3311 187:2362 188:2566 189:1924 190:8161 191:1345 192:9702 193:5865 194:4732 195:3963 196:2229 197:1270 198:5525 199:5873 200:7177 201:4628 202:10353 203:10006 204:4530 205:2861 206:3015 207:3117 208:3974 209:3884 210:3931 211:2068 212:2844 213:2578 214:860 215:67 216:5689 217:2109 218:920 219:601 220:1676 221:939 222:722 223:1287 End of report

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Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover
by Jacques Latour 02 Nov '17

02 Nov '17

Hi, Does anyone know if there's fibre resiliency between Calgary and Toronto over the Great lakes, I thinking redundancy could be achieved by using two paths one following the railroad and the other following the Trans-Canadian highway. Does anyone know if there is fibre following the Trans-Canadian highway and who owns it? Is this achievable? Thanks, Jacques CTO, CIRA

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New Cable Systems - Asia
by Rod Beck 02 Nov '17

02 Nov '17

Good article providing an overview of recent cable builds. http://www.zdnet.com/article/facebook-amazon-softbank-ntt-sign-on-for-60tbp… [https://zdnet4.cbsistatic.com/hub/i/r/2017/10/31/32fcd53c-09cb-4f94-9675-53…]<http://www.zdnet.com/article/facebook-amazon-softbank-ntt-sign-on-for-60tbp…> Facebook, Amazon, SoftBank, NTT sign on for 60Tbps Jupiter subsea cable | ZDNet<http://www.zdnet.com/article/facebook-amazon-softbank-ntt-sign-on-for-60tbp…> www.zdnet.com A consortium of tech companies will be building out yet another Asia-Pacific subsea cable, with the 60Tbps Jupiter cable system to connect the US with Japan and the Philippines. Roderick Beck Director of Global Sales United Cable Company www.unitedcablecompany.com<http://www.unitedcablecompany.com> 85 Király utca, 1077 Budapest rod.beck(a)unitedcablecompany.com 36-30-859-5144 [1467221477350_image005.png]

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Re: Calgary <-> Toronto 100% Canadian Fibre Resiliency on failover
by Scott Weeks 01 Nov '17

01 Nov '17

--- jfmezei_nanog(a)vaxination.ca wrote: From: Jean-Francois Mezei <jfmezei_nanog(a)vaxination.ca> It isn't clear to me what happens to fibre when a railway abandons and removes tracks. ---------------------------------------- That's an interesting question. Anyone have experience with that? scott

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What's the point of prepend communities?
by Jason Lixfeld 01 Nov '17

01 Nov '17

Hi, Of all the ISPs that I am familiar with that have a BGP community structure usable by their peering partners and/or downstream customers, among other things, they allow the customer to signal the ISP to prepend their own AS to the as-path of a particular prefix announcement. What functionality does a provider prepend support that is otherwise lost in the absence of such a feature, but all the while, the customer would be able to prepend their own AS to the same prefix announcement anyway? Is this a relic from before ISPs allowed for local preference adjustment, or is there actually a use case for this? Thanks!

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Major ISP Issues
by Jon Zamani 01 Nov '17

01 Nov '17

Who else reporting the same? CenturyLink Comcast/XFinity Seems nationwide R/S, [cid:image001.jpg@01D352EF.3C15CF40] Jon Zamani | Sr. Network and Security Engineer MetaSource, LLC | 67 W 13490 S Suite 300 | Draper, UT 84020-8334 office 801.984.6606 | mobile 801.209.5578 | jzamani(a)metasource.com<mailto:jzamani@metasource.com> RFC 1925<https://www.ietf.org/rfc/rfc1925.txt> - The 12 Truths ________________________________ NOTICE: This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended only for the use of the Individual (s) named above. MetaSource makes no expressed or implied warranty of any kind respecting the information presented and assumes no responsibility for errors and omissions. If you are not the intended recipient of this e-mail, or the employee or agent responsible for delivering this to the intended recipient, you are hereby notified that any dissemination or copying of this e-mail is strictly prohibited. If you have received this e-mail in error, please immediately notify us by telephone at 215-788-8885 or notify us by e-mail at legal(a)metasource.com. Also, please mail a hardcopy of the e-mail to MetaSource at 1900 Frost Road, Suite 100, Bristol, PA 19007 via the U.S. Postal Service. We will reimburse you for all expenses incurred.

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