September 2025 - NANOG - lists.nanog.org

Sites unreachable while traversing Dallas IXP
by Andy Cole 28 Sep '25

28 Sep '25

Group, I've been Peering with both Route Servers in the Dallas IX for over a month using a single 10G link with no issues. Due to capacity concerns I had to augment to a 20G LAG. In order to do this, I shut the existing link down (which dropped both eBGP sessions), used the existing IP space to create the LAG, and then added the 2nd 10G link. The eBGP sessions reestablished over the LAG and traffic started flowing error free. No configuration changes to routing policy at all. After a few days we started to get customer complaints for certain sites/domains being unreachable. I worked around the issue by not announcing the customer blocks to the route servers and changed the return path to traverse transit. This solved the issue, but I'm perplexed as to what could've caused the issue, and where to look to resolve it. If you guys could provide feedback and point me in the right direction I'd appreciate it. TIA. ~Andy

10 14

Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 26 Sep '25

26 Sep '25

This is an automated weekly mailing describing the state of the Global IPv4 Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG UKNOF, 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 https://thyme.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. IPv4 Routing Table Report 04:00 +10GMT Sat 27 Sep, 2025 IPv4 BGP Table (Global) as seen at Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 1004959 Prefixes after maximum aggregation (per Origin AS): 389862 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495810 Number of IPv4 prefixes with a valid ROA: 568218 Number of IPv4 prefixes with an invalid ROA: 1491 Number of IPv4 prefixes with no ROA: 435250 Total ASes present in the Internet Routing Table: 77375 Prefixes per ASN: 12.99 Origin-only ASes present in the Internet Routing Table: 66507 Origin ASes announcing only one prefix: 27085 Transit ASes present in the Internet Routing Table: 10868 Transit-only ASes present in the Internet Routing Table: 527 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 57 Max AS path prepend of ASN ( 37447) 53 Prefixes from unregistered ASNs in the Routing Table: 1001 Number of instances of unregistered ASNs: 1039 Number of 32-bit ASNs allocated by the RIRs: 47563 Number of 32-bit ASNs visible in the Routing Table: 39032 Prefixes from 32-bit ASNs in the Routing Table: 210609 Number of bogon 32-bit ASNs visible in the Routing Table: 104 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 432 Number of addresses announced to Internet: 3112431360 Equivalent to 185 /8s, 131 /16s and 239 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 327868 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269451 Total APNIC prefixes after maximum aggregation: 79993 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 259482 Unique aggregates announced from the APNIC address blocks: 105910 APNIC Region origin ASes present in the Internet Routing Table: 14840 APNIC Prefixes per ASN: 17.49 APNIC Region origin ASes announcing only one prefix: 4522 APNIC Region transit ASes present in the Internet Routing Table: 1959 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 35 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10377 Number of APNIC addresses announced to Internet: 751927936 Equivalent to 44 /8s, 209 /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, 131072-155961 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: 294946 Total ARIN prefixes after maximum aggregation: 133847 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 296224 Unique aggregates announced from the ARIN address blocks: 142930 ARIN Region origin ASes present in the Internet Routing Table: 19319 ARIN Prefixes per ASN: 15.33 ARIN Region origin ASes announcing only one prefix: 7086 ARIN Region transit ASes present in the Internet Routing Table: 1920 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 25 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5338 Number of ARIN addresses announced to Internet: 1352717056 Equivalent to 80 /8s, 160 /16s and 211 /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, 393216-402332 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, 54/8, 55/8, 56/8, 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: 279688 Total RIPE prefixes after maximum aggregation: 138215 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279173 Unique aggregates announced from the RIPE address blocks: 180498 RIPE Region origin ASes present in the Internet Routing Table: 29076 RIPE Prefixes per ASN: 9.60 RIPE Region origin ASes announcing only one prefix: 12089 RIPE Region transit ASes present in the Internet Routing Table: 3939 Average RIPE Region AS path length visible: 4.8 Max RIPE Region AS path length visible: 26 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12725 Number of RIPE addresses announced to Internet: 732971392 Equivalent to 43 /8s, 176 /16s and 65 /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 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 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: 124964 Total LACNIC prefixes after maximum aggregation: 30269 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121210 Unique aggregates announced from the LACNIC address blocks: 49429 LACNIC Region origin ASes present in the Internet Routing Table: 11298 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2669 LACNIC Region transit ASes present in the Internet Routing Table: 2491 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 37 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9259 Number of LACNIC addresses announced to Internet: 170752768 Equivalent to 10 /8s, 45 /16s and 123 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 34909 Total AfriNIC prefixes after maximum aggregation: 6853 AfriNIC Deaggregation factor: 5.09 Prefixes being announced from the AfriNIC address blocks: 48438 Unique aggregates announced from the AfriNIC address blocks: 16661 AfriNIC Region origin ASes present in the Internet Routing Table: 1968 AfriNIC Prefixes per ASN: 24.61 AfriNIC Region origin ASes announcing only one prefix: 719 AfriNIC Region transit ASes present in the Internet Routing Table: 386 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 57 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1333 Number of AfriNIC addresses announced to Internet: 103827200 Equivalent to 6 /8s, 48 /16s and 71 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 9808 13741 8759 116 CHINAMOBILE-CN China Mobile Communication 7545 6164 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4947 4193 77 ERX-CERNET-BKB China Education and Resear 9498 4470 536 311 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3720 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3311 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3118 827 182 CMNET-JIANGSU-AP China Mobile communicati 24560 2925 862 505 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4766 2332 11522 632 KIXS-AS-KR Korea Telecom, KR Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14374 40907 5402 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3956 3062 313 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3678 1320 82 SHAW, CA 174 3369 8773 824 COGENT-174, US 396982 3270 4824 459 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3068 238 1706 USDA-1, US 16625 2910 1240 2175 AKAMAI-AS, US Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7450 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 9009 3967 371 2223 M247, RO 20940 3911 3395 126 AKAMAI-ASN1, NL 12389 3132 2315 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2440 173 1764 CDNEXT, GB 34984 2412 363 573 TELLCOM-AS, TR 203020 1865 198 872 HOSTROYALE, IN 8452 1620 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12362 3276 575 UNINET, MX 10620 3502 473 1046 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1231 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1059 67 367 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 2486 56 TIM SA, BR Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1846 652 28 RAYA-AS, EG 36992 1509 1498 384 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1248 389 20 LINKdotNET-AS, EG 29571 1185 102 53 ORANGE-COTE-IVOIRE, CI 36935 1077 522 45 Vodafone-, EG 37069 1055 1096 13 MOBINIL, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 82 3 KENET-AS, KE 15399 547 56 56 WANANCHI-, KE Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14374 40907 5402 AMAZON-02, US 9808 13741 8759 116 CHINAMOBILE-CN China Mobile Communication 8151 12362 3276 575 UNINET, MX 12479 7450 1711 149 UNI2-AS, ES 7545 6164 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4947 4193 77 ERX-CERNET-BKB China Education and Resear 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 9498 4470 536 311 BBIL-AP BHARTI Airtel Ltd., IN 9009 3967 371 2223 M247, RO Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13741 13625 CHINAMOBILE-CN China Mobile Communications Grou 8151 12362 11787 UNINET, MX 12479 7450 7301 UNI2-AS, ES 7545 6164 5560 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4947 4870 ERX-CERNET-BKB China Education and Research Net 39891 4798 4735 ALJAWWALSTC-AS, SA 9498 4470 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4746 3942 CABLEONE, US 7552 3951 3923 VIETEL-AS-AP Viettel Group, VN 20940 3911 3785 AKAMAI-ASN1, NL Complete listing at https://thyme.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://thyme.apnic.net/current/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://thyme.apnic.net/current/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE Complete listing at https://thyme.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 /8:16 /9:14 /10:41 /11:93 /12:301 /13:581 /14:1199 /15:2127 /16:13796 /17:8284 /18:13524 /19:24846 /20:45125 /21:52489 /22:112988 /23:103859 /24:624890 /25:786 /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 8151 6579 12362 UNINET, MX 12479 6423 7450 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3678 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2512 3956 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2450 14374 AMAZON-02, US 30036 2299 2641 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2220 3502 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1787 2:1536 3:939 4:10 5:4790 6:170 7:6 8:1554 9:6 11:172 12:1244 13:556 14:2671 15:401 16:304 17:388 18:907 20:573 21:4 22:188 23:7856 24:2654 25:2 27:2735 29:19 31:3356 32:32 33:1 34:81 35:275 36:4440 37:4532 38:9490 39:1093 40:291 41:4315 42:945 43:2702 44:377 45:18896 46:5143 47:346 49:2012 50:2043 51:594 52:1606 54:365 55:1056 56:11 57:286 58:2177 59:1362 60:1188 61:2923 62:3049 63:1774 64:5634 65:2146 66:4927 67:3098 68:1082 69:3935 70:1043 71:635 72:2915 74:2829 75:1498 76:606 77:2768 78:1906 79:1761 80:2254 81:2098 82:3431 83:1466 84:1984 85:3514 86:1095 87:2379 88:1326 89:4502 90:813 91:8406 92:2785 93:2979 94:4196 95:4460 96:1474 97:312 98:953 99:762 100:71 101:1222 102:4127 103:32253 104:5366 105:774 106:881 107:2655 108:1220 109:4223 110:2248 111:3835 112:2654 113:1587 114:1995 115:2245 116:2081 117:2929 118:2535 119:1970 120:2292 121:1404 122:2838 123:2252 124:1733 125:2912 126:91 128:1580 129:970 130:1291 131:2126 132:789 133:461 134:1604 135:365 136:1493 137:1185 138:2801 139:1604 140:1695 141:1557 142:1910 143:2033 144:1274 145:626 146:2181 147:2120 148:2732 149:2908 150:1265 151:2535 152:2175 153:576 154:7501 155:2047 156:3488 157:1985 158:1420 159:2591 160:3551 161:1976 162:3935 163:2222 164:1926 165:2576 166:1567 167:2097 168:3827 169:778 170:5361 171:1010 172:4254 173:3417 174:906 175:1335 176:3814 177:4748 178:4231 179:2267 180:2614 181:4236 182:3730 183:2296 184:2067 185:21656 186:5373 187:4684 188:4276 189:4381 190:9686 191:1552 192:11415 193:9478 194:7794 195:5587 196:3284 197:3253 198:6249 199:8738 200:8249 201:6360 202:10643 203:10591 204:4601 205:3672 206:4554 207:3685 208:4289 209:5347 210:4969 211:2773 212:4782 213:3893 214:1037 215:52 216:6922 217:3329 218:1617 219:567 220:2189 221:1235 222:883 223:3018 End of report

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Reminder: NANOG 95 Agenda is Live! + MORE!
by Nanog News 26 Sep '25

26 Sep '25

*** Reminder: NANOG 95 Agenda is Live!* ------------------------------------------------------------ *Can't Make it In-Person? Virtual Registration is Open* From groundbreaking talks to powerhouse speakers—your roadmap to Arlington is ready. 📅 Sync your calendar + explore the full schedule now. 📍 Oct. 27–29 | Arlington, TX *VIEW AGENDA* (http://nanog.org/agenda) *REGISTER NOW* (https://nanog.org/events/nanog-95/register/) *** Board Statements of Support are Now Open* ------------------------------------------------------------ To make a statement of support ( https://nanog.org/members/elections/2025-candidate-statement-of-support-for…) you must be logged in (https://nanog.org/login/) with your NANOG Member credentials. View the six candidate bios and add your statements of support. *2025 Candidates* ( https://nanog.org/members/elections/2025-board-candidates/) *** NANOG is Active!* ------------------------------------------------------------ *Join a NANOG Yoga Session or Running Group at NANOG 95* Yoga will be Monday/Tuesday/Wednesday from 7:30am-8:15am on the lawn by the pool deck. Mats will be provided. Run Club will be Monday/Tuesday/Wednesday from 6:45am-7:45am. Meet by the door near the large sponsor banner. *** Connect, Engage, + Elevate Your Brand* ------------------------------------------------------------ *Don't Miss Your Chance to Get in Front of the Most Influential Minds in Network Engineering* *Beer N' Gear:* a high energy evening and all about connection. Attendees come to unwind and explore the latest technology. *An added bonus for NANOG 95, *as a Beer N' Gear sponsor, you may choose to use a complimentary 1/2-day conference room to host meetings, demos, or customer sessions. *Sign up by Oct 1, 2025 to secure this rare opportunity.* *NANOG Showcase *- Limited Spots Available. Build new partnerships and boost visibility with a branded table and banner provided by NANOG. This is your opportunity to align your brand with your target audience. *EMAIL US* (mailto:sponsorship@nanog.org?subject=Sponsorship) *** Stay Connected* ------------------------------------------------------------ http://www.facebook.com http://www.instagram.com/nanog_org/ http://www.linkedin.com/company/nanog/ https://www.twitter.com/nanog/ http://nanog.org

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Re: Sites unreachable while traversing Dallas IXP
by Mel Beckman 26 Sep '25

26 Sep '25

Nick, I agree that theoretically there should be no problem with different hashing implementations on each end, but as I noted in my original answer, I have directly experienced issues like packet reordering and dropped packets. Perhaps this was due to a bug of some sort in one of the implementations. I do know that changing ONLY the algorithm on one end solved the problem. Once I found a working configuration, I simply noted the potential issue for the future and avoided it. Software is too squishy to expect it to always implement every standard perfectly. -mel > On Sep 26, 2025, at 7:57 AM, Nick Hilliard <nick(a)foobar.org> wrote: > > Mel Beckman wrote on 26/09/2025 15:32: >> From >> https://www.exam-labs.com/blog/configuring-lacp-between-cisco-ios-and-junip… >> *Understanding LACP Failures and Common Pitfalls* >> Link aggregation, although a robust feature, is susceptible to various issues. To resolve these problems effectively, network administrators must first understand the potential causes of LACP failures. Here are some of the most common causes for LACP issues: >> 1. *Mismatched Configurations:** >> *Often, the primary reason for LACP failure is a misalignment in >> configurations between the two devices. This might include >> differences in LACP modes (active vs. passive), inconsistent >> port-channel settings, or mismatched VLANs. Proper alignment of >> settings across both devices is crucial to the successful >> negotiation of LACP. > > Not sure what this has to do with your previous email, where you were specifically referring to hashing algos needing to be the same or "compatible" on each side of the link: > >> Instead you configure one of the available hash-based distribution functions the two endpoints have in common. > >> I’ve found that sometimes with LAGs between different equipment vendors one or more of these algorithms aren’t compatible, resulting in packets out of order or even dropped. > > There's no such thing as the packet hashing algorithms needing to be "compatible" on each side of a LAG bundle. You can use whatever hashing algo you want on either side and it doesn't make the slightest difference at the other end. There's no concept of hashing algo compatibility, and hashing doesn't come into play with LACP or any other sort of negotiation. > > With the link above, you're confusing LACP negotiation issues with packet loss. If you have an LACP negotiation failure, typically the LAG interface won't come up to start with on a juniper / cisco device. Sometimes - rarely - you can have failure modes where an individual bearer circuit won't be used correctly, which would cause 1/N*100% packet loss, i.e. 50% if N=2. > > Also, as this is an IXP link, it probably means that it's a single untagged VLAN, i.e. no mismatched vlans. Although if there is a mismatched vlan, then that vlan will experience 100% packet loss. > > Nick

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Need a contact from USAA
by Anthony Leto 26 Sep '25

26 Sep '25

Is there anyone on-list from USAA?

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spectrum contact
by Dennis Burgess - LTI Support 26 Sep '25

26 Sep '25

I have a mutual customer that spectrum has disconnected the service from, but they (spectrum) are still advertising his prefixes. Can someone from spectrum/charter contact me about fixing this? Dennis Burgess MikroTik Certified: Trainer | Network Associate | Routing Engineer | Wireless Engineer | Traffic Control Engineer | Inter-Networking Engineer | Security Engineer | Enterprise Wireless Engineer Hurricane Electric: IPv6 Sage Cambium Certified: ePMP Author: Learn RouterOS – Second Edition<https://shop.linktechs.net/126> Link Technologies, Inc.<http://www.linktechs.net/> – MikroTik & ISP Support Services | Shop On-Line<https://shop.linktechs.net/> 📞 Office: 314-735-0270 or 1-866-620-0074 📡 Create Wireless Coverage with www.towercoverage.com<http://www.towercoverage.com/>

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APRICOT 2026: CfP
by Mark Tinka 25 Sep '25

25 Sep '25

Hello all. The APRICOT 2026 Program Committee chairs are pleased to announce that the Call for Papers (CfP) has been published at the below URL: https://2026.apricot.net/programme/callforpresentations We look forward to receiving your submissions, noting that the APRICOT 2026 conference is going to be held one month earlier than is usually the case; 9th - 11th February, 2026. The sooner you can submit your presentation, the greater the chance it could make the final agenda. Thank you. Mark Tinka, Mark Duffell & Achie Atienza APRICOT 2026 Programme Committee Chairs

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APRICOT 2026: Call for Papers
by Mark Tinka 25 Sep '25

25 Sep '25

Hello all. The APRICOT 2026 Program Committee chairs are pleased to announce that the Call for Papers (CfP) has been published at the below URL: https://2026.apricot.net/programme/callforpresentations We look forward to receiving your submissions, noting that the APRICOT 2026 conference is going to be held one month earlier than is usually the case; 9th - 11th February, 2026. The sooner you can submit your presentation, the greater the chance it could make the final agenda. Thank you. Mark Tinka, Mark Duffell & Achie Atienza APRICOT 2026 Programme Committee Chairs

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U.S. Secret Service shuts down NYC cellular disruption network
by Mel Beckman 24 Sep '25

24 Sep '25

The U.S. Secret Service announced today that it dismantled a network of electronic devices located throughout the New York tristate area that were used to conduct multiple telecommunications-related threats directed towards senior U.S. government officials, which represented an imminent threat to the agency’s protective operations. The SS say they discovered more than 300 co-located SIM servers and 100,000 SIM cards across multiple sites, and while the photo they provide shows gear set up in what looks like an apartment, it could be that interlopers have infiltrated actual Internet colo facilities. As a colo operator, I’ve turned away more than a few sketchy potential customers due to their flakey stories requesting rooftop or window antenna locations. Be on the lookout. https://www.secretservice.gov/newsroom/releases/2025/09/us-secret-service-d….<https://www.secretservice.gov/newsroom/releases/2025/09/us-secret-service-d….> -mel beckman

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2025 State of Network Automation Survey - Requesting Your Participation
by Chris Grundemann 23 Sep '25

23 Sep '25

Hey all! It's that time of year again... Survey time. The 2025 State of Network Automation Survey is open!!! No automation experience required - please share with everyone who has edit access on a production network, regardless of how automated that network might be. https://www.surveymonkey.com/r/StateOfNetworkAutomation_2025 For consistency, and ability to track trends, most of the questions are word-for-word repeats from prior years surveys. This year I deleted a few questions that don't seem relevant anymore, and I made a few questions optional, rather than required, in hopes of MANY more responses -- I also built in some logic, so that *folks who have ZERO network automation experience / deployment can still answer the survey easily*, in hopes of more accurate data collection. There are also some new questions, all suggested by the Network Automation Forum community. Finally, you will notice that we (now with NAF backing) moved off of the free Google form to a much sleeker SurveyMonkey survey. w00t Again - we invite anyone and everyone with enable on a production network to complete the survey, and we hope that everyone here will share the survey in other foraa as well - mailing lists, newsletters, social media, discord, slack, reddit, etc, etc. Survey results have been submitted as a talk for NANOG 95 in October. And will be available publically one way or another before the end of the year. Thanks! ~Chris

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