June 2025 - NANOG - lists.nanog.org

BYOIP and AS prepend in AWS
by Hank Nussbacher 23 Jun '25

23 Jun '25

Can someone explain to me how to BYOIP into AWS and use AS prepends? Have been unsuccessful in finding how. Thanks, Hank

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Re: BYOIP and AS prepend in AWS
by Giorgio Bonfiglio 23 Jun '25

23 Jun '25

> On 23 Jun 2025, at 12:06, Ben Ashton <ben(a)vuppa.net> wrote: > > And yet, does not answer the question. Uh? Were you meaning to respond to Mel’s?

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nomination for Postel Award
by Mike Noyes 21 Jun '25

21 Jun '25

Nomination of David Täht for the Jon Postel Prize, 2025 https://docs.google.com/document/d/1hRtD9xE6H9cJGQaKIXHi_f_HpoRNK4-4-lS1ZwY… -- Mike Noyes mike at noyes.name @mhnoyes:matrix.org

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 20 Jun '25

20 Jun '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 21 Jun, 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: 986806 Prefixes after maximum aggregation (per Origin AS): 381244 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 482827 Number of IPv4 prefixes with a valid ROA: 544483 Number of IPv4 prefixes with an invalid ROA: 1414 Number of IPv4 prefixes with no ROA: 440909 Total ASes present in the Internet Routing Table: 76957 Prefixes per ASN: 12.82 Origin-only ASes present in the Internet Routing Table: 65860 Origin ASes announcing only one prefix: 26879 Transit ASes present in the Internet Routing Table: 11097 Transit-only ASes present in the Internet Routing Table: 559 Average AS path length visible in the Internet Routing Table: 5.2 Max AS path length visible: 80 Max AS path prepend of ASN ( 37447) 75 Prefixes from unregistered ASNs in the Routing Table: 1156 Number of instances of unregistered ASNs: 1202 Number of 32-bit ASNs allocated by the RIRs: 46694 Number of 32-bit ASNs visible in the Routing Table: 38421 Prefixes from 32-bit ASNs in the Routing Table: 204873 Number of bogon 32-bit ASNs visible in the Routing Table: 118 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 447 Number of addresses announced to Internet: 3106923392 Equivalent to 185 /8s, 47 /16s and 227 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 323319 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 260272 Total APNIC prefixes after maximum aggregation: 77958 APNIC Deaggregation factor: 3.34 Prefixes being announced from the APNIC address blocks: 251570 Unique aggregates announced from the APNIC address blocks: 104492 APNIC Region origin ASes present in the Internet Routing Table: 14668 APNIC Prefixes per ASN: 17.15 APNIC Region origin ASes announcing only one prefix: 4454 APNIC Region transit ASes present in the Internet Routing Table: 1962 Average APNIC Region AS path length visible: 5.5 Max APNIC Region AS path length visible: 78 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10171 Number of APNIC addresses announced to Internet: 749585664 Equivalent to 44 /8s, 173 /16s and 197 /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: 290319 Total ARIN prefixes after maximum aggregation: 131377 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 292113 Unique aggregates announced from the ARIN address blocks: 139571 ARIN Region origin ASes present in the Internet Routing Table: 19229 ARIN Prefixes per ASN: 15.19 ARIN Region origin ASes announcing only one prefix: 7014 ARIN Region transit ASes present in the Internet Routing Table: 2010 Average ARIN Region AS path length visible: 4.6 Max ARIN Region AS path length visible: 34 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5231 Number of ARIN addresses announced to Internet: 1349715200 Equivalent to 80 /8s, 115 /16s and 5 /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: 275332 Total RIPE prefixes after maximum aggregation: 134898 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 273980 Unique aggregates announced from the RIPE address blocks: 175856 RIPE Region origin ASes present in the Internet Routing Table: 28937 RIPE Prefixes per ASN: 9.47 RIPE Region origin ASes announcing only one prefix: 12066 RIPE Region transit ASes present in the Internet Routing Table: 4010 Average RIPE Region AS path length visible: 5.3 Max RIPE Region AS path length visible: 69 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12509 Number of RIPE addresses announced to Internet: 731197568 Equivalent to 43 /8s, 149 /16s and 48 /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: 124493 Total LACNIC prefixes after maximum aggregation: 29614 LACNIC Deaggregation factor: 4.20 Prefixes being announced from the LACNIC address blocks: 121035 Unique aggregates announced from the LACNIC address blocks: 48913 LACNIC Region origin ASes present in the Internet Routing Table: 11268 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2654 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.9 Max LACNIC Region AS path length visible: 75 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9223 Number of LACNIC addresses announced to Internet: 171320320 Equivalent to 10 /8s, 54 /16s and 36 /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: 35234 Total AfriNIC prefixes after maximum aggregation: 6644 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 47661 Unique aggregates announced from the AfriNIC address blocks: 13593 AfriNIC Region origin ASes present in the Internet Routing Table: 1925 AfriNIC Prefixes per ASN: 24.76 AfriNIC Region origin ASes announcing only one prefix: 691 AfriNIC Region transit ASes present in the Internet Routing Table: 375 Average AfriNIC Region AS path length visible: 6.0 Max AfriNIC Region AS path length visible: 80 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1287 Number of AfriNIC addresses announced to Internet: 104893952 Equivalent to 6 /8s, 64 /16s and 142 /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 11291 8760 110 CHINAMOBILE-CN China Mobile Communication 7545 6181 846 648 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4804 4192 76 ERX-CERNET-BKB China Education and Resear 9498 4432 535 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3915 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3698 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3290 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2892 856 533 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4766 2326 11520 609 KIXS-AS-KR Korea Telecom, KR 45090 2208 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 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 13627 40957 5235 AMAZON-02, US 11492 4780 317 603 CABLEONE, US 7155 3857 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 81 SHAW, CA 174 3473 8743 858 COGENT-174, US 22773 3349 3032 166 ASN-CXA-ALL-CCI-22773-RDC, US 749 3227 54767 2478 DNIC-AS-00749, US 396982 3192 3854 428 GOOGLE-CLOUD-PLATFORM, US 16625 3001 1256 2220 AKAMAI-AS, US 36352 2823 230 852 AS-COLOCROSSING, 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 7672 1713 148 UNI2-AS, ES 39891 4780 291 66 ALJAWWALSTC-AS, SA 20940 3942 3395 126 AKAMAI-ASN1, NL 9009 3896 358 2100 M247, RO 12389 3122 2305 888 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 576 TELLCOM-AS, TR 212238 2313 169 1695 CDNEXT, GB 8452 1616 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 8551 1421 366 39 BEZEQ-INTERNATIONAL-AS Bezeqint Internet 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 12209 3256 574 UNINET, MX 10620 3505 481 1017 Telmex Colombia S.A., CO 13999 2537 537 354 Mega Cable, S.A. de C.V., MX 11830 1987 369 64 Instituto Costarricense de Electricidad y 28573 1373 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1340 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1208 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1197 371 22 Telefonica del Peru S.A.A., PE 22884 1061 67 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1048 2503 52 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 1820 644 27 RAYA-AS, EG 24863 1621 389 16 LINKdotNET-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1077 523 47 Vodafone-, EG 20011 568 154 212 INTERNET-SOLUTIONS, ZA 36914 568 82 3 KENET-AS, KE 15399 542 57 59 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 13627 40957 5235 AMAZON-02, US 8151 12209 3256 574 UNINET, MX 9808 11291 8760 110 CHINAMOBILE-CN China Mobile Communication 12479 7672 1713 148 UNI2-AS, ES 7545 6181 846 648 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4804 4192 76 ERX-CERNET-BKB China Education and Resear 11492 4780 317 603 CABLEONE, US 39891 4780 291 66 ALJAWWALSTC-AS, SA 9498 4432 535 312 BBIL-AP BHARTI Airtel Ltd., IN 20940 3942 3395 126 AKAMAI-ASN1, NL Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12209 11635 UNINET, MX 9808 11291 11181 CHINAMOBILE-CN China Mobile Communications Grou 12479 7672 7524 UNI2-AS, ES 7545 6181 5533 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4804 4728 ERX-CERNET-BKB China Education and Research Net 39891 4780 4714 ALJAWWALSTC-AS, SA 11492 4780 4177 CABLEONE, US 9498 4432 4120 BBIL-AP BHARTI Airtel Ltd., IN 7552 3915 3889 VIETEL-AS-AP Viettel Group, VN 20940 3942 3816 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 46887 CROWNCASTLE-AS46887, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 33132 CROWNCASTLE-AS33132, 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: 6939 HURRICANE, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.155.208.0/24 Origin: 396169 AS-GHCIL-01, US 23.155.208.0/24 Transit: 35985 ONERINGNET-ATL-1, US 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 /11:92 /12:300 /13:582 /14:1200 /15:2131 /16:13857 /17:8324 /18:13595 /19:24774 /20:44798 /21:52169 /22:112422 /23:102942 /24:608754 /25:795 /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 6594 7672 UNI2-AS, ES 8151 6425 12209 UNINET, MX 11492 3576 4780 CABLEONE, US 39891 3489 4780 ALJAWWALSTC-AS, SA 6327 3431 3636 SHAW, CA 7155 2816 3857 VIASAT-SP-BACKBONE, US 22773 2501 3349 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2346 13627 AMAZON-02, US 30036 2254 2595 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2192 3505 Telmex Colombia S.A., CO Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1738 2:1505 3:824 4:10 5:4749 6:162 7:6 8:1595 9:1 11:172 12:1346 13:451 14:2564 15:363 16:285 17:377 18:918 20:548 21:4 22:188 23:7593 24:2816 25:2 27:2712 29:19 31:3297 32:38 33:1 34:80 35:255 36:3164 37:4586 38:9390 39:908 40:169 41:4286 42:954 43:2593 44:378 45:18630 46:5107 47:321 49:1957 50:1884 51:592 52:1564 54:319 55:1077 56:11 57:272 58:2149 59:1344 60:1171 61:2804 62:2936 63:1799 64:5470 65:2169 66:4649 67:3066 68:1122 69:3850 70:1071 71:624 72:2860 74:2793 75:1506 76:626 77:2738 78:1884 79:1714 80:2223 81:2062 82:3168 83:1444 84:1875 85:3459 86:1082 87:2372 88:1310 89:4408 90:770 91:8408 92:2721 93:2920 94:4036 95:4383 96:1429 97:311 98:981 99:687 100:72 101:1188 102:3866 103:32281 104:5156 105:762 106:1044 107:2663 108:1255 109:4106 110:2232 111:3347 112:2131 113:1547 114:1999 115:2139 116:2066 117:2534 118:2364 119:1941 120:2075 121:1427 122:2802 123:2192 124:1640 125:2898 126:91 128:1590 129:957 130:1300 131:2041 132:783 133:451 134:1541 135:346 136:1347 137:1174 138:2859 139:1569 140:1623 141:1504 142:1903 143:1862 144:1168 145:545 146:2182 147:2109 148:2696 149:2918 150:1259 151:1967 152:2087 153:524 154:7343 155:1754 156:2873 157:1910 158:1330 159:2498 160:3575 161:1852 162:3853 163:2217 164:1831 165:1995 166:1496 167:1978 168:3993 169:791 170:5142 171:1009 172:4451 173:3340 174:921 175:1296 176:3715 177:4766 178:3743 179:2318 180:2636 181:4088 182:3459 183:1834 184:2077 185:21559 186:5182 187:4600 188:4263 189:4329 190:9584 191:1492 192:11313 193:9483 194:7812 195:5550 196:3282 197:3250 198:6199 199:8540 200:8225 201:6393 202:10488 203:10592 204:4573 205:3664 206:4487 207:3586 208:4277 209:5169 210:4859 211:2644 212:4591 213:3751 214:1030 215:48 216:6751 217:3186 218:1412 219:559 220:2138 221:1146 222:857 223:2508 End of report

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Stream All N94 Talks! N95 Registration is OPEN + Inside N94: Community Speaks Out!
by Nanog News 20 Jun '25

20 Jun '25

*** Stream All N94 Talks Now on YouTube* ------------------------------------------------------------ *Have You Subscribed to our NANOG YouTube Channel?* Whether you missed a session or just want to revisit your favorite talks, the full lineup from NANOG 94 in Denver is now available to watch online on our NANOG 94 Playlist. *WATCH NOW <https://youtube.com/playlist?list=PLO8DR5ZGla8gr-Hw8obs1A0wgxJ4hHdmb&si=ZEe…> * *** NANOG 95 Registration is OPEN* ------------------------------------------------------------ *Join Us Oct. 27-29 in Arlington, TX* Register now to lock in Early Bird pricing before it rides off into the sunset. *REGISTER NOW!* <https://nanog.org/events/nanog-95/register/> *** Inside N94: In the Words of Our Community* ------------------------------------------------------------ *What Really Happens at a NANOG Conference? Let’s Hear It From the People Who Were There.* *READ NOW <https://nanog.org/stories/articles/inside-nanog-94-in-the-words-of-our-comm…> * *** 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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IPv6 native percentage (end user perspective)
by Forrest Christian (List Account) 20 Jun '25

20 Jun '25

I see numerous statistics from Google and similar sources that indicate the percentage of end users who are IPv6 native. What I'm missing are statistics going the other way - what percentage of sites (or endpoints that customers regularly connect to) are IPv6-native, from a total traffic perspective? That is, if I switch to IPv6 on my eyeball network, how much of my existing traffic will I have to CGNAT in some way to reach the IPv4-only network? We have sufficient IPv4 address resources to stick with IPv4 for the foreseeable future. However, at some point, the percentage of traffic using IPv6 becomes so high that the reasons not to move become less significant. For example, the CGNAT box becomes significantly smaller, as most of the traffic should flow around it on IPv6. -- - Forrest

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Re: IPv6 native percentage (end user perspective)
by Andrew 19 Jun '25

19 Jun '25

My experience on my own home network is that ~80% of wan traffic is v6-native, ~19% is using dns64/nat64, and ~1% is ipv4-native. This is for 5 people in the US. The 1% includes all of the (internet-bound) traffic from all devices that don’t support v6 at all, and all traffic from sockets which don’t respect dns64. I’m not using ipv6-only/mostly, just enabling dns64 in parallel with dual stack. So much of the traffic goes to streaming services. So very much traffic. Andrew

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RIP Fred Baker
by Suresh Ramasubramanian 19 Jun '25

19 Jun '25

https://en.wikipedia.org/wiki/Fred_Baker_(engineer) End of an era --srs

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 13 Jun '25

13 Jun '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 14 Jun, 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: 987315 Prefixes after maximum aggregation (per Origin AS): 381363 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 482560 Number of IPv4 prefixes with a valid ROA: 544429 Number of IPv4 prefixes with an invalid ROA: 1985 Number of IPv4 prefixes with no ROA: 440901 Total ASes present in the Internet Routing Table: 76982 Prefixes per ASN: 12.83 Origin-only ASes present in the Internet Routing Table: 65862 Origin ASes announcing only one prefix: 26875 Transit ASes present in the Internet Routing Table: 11120 Transit-only ASes present in the Internet Routing Table: 565 Average AS path length visible in the Internet Routing Table: 5.2 Max AS path length visible: 75 Max AS path prepend of ASN ( 7438) 64 Prefixes from unregistered ASNs in the Routing Table: 1137 Number of instances of unregistered ASNs: 1178 Number of 32-bit ASNs allocated by the RIRs: 46645 Number of 32-bit ASNs visible in the Routing Table: 38406 Prefixes from 32-bit ASNs in the Routing Table: 204489 Number of bogon 32-bit ASNs visible in the Routing Table: 110 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 436 Number of addresses announced to Internet: 3110769024 Equivalent to 185 /8s, 106 /16s and 145 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 323428 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 259895 Total APNIC prefixes after maximum aggregation: 77917 APNIC Deaggregation factor: 3.34 Prefixes being announced from the APNIC address blocks: 251279 Unique aggregates announced from the APNIC address blocks: 104432 APNIC Region origin ASes present in the Internet Routing Table: 14661 APNIC Prefixes per ASN: 17.14 APNIC Region origin ASes announcing only one prefix: 4454 APNIC Region transit ASes present in the Internet Routing Table: 1965 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 39 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10163 Number of APNIC addresses announced to Internet: 749730560 Equivalent to 44 /8s, 175 /16s and 251 /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: 290744 Total ARIN prefixes after maximum aggregation: 131511 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 292529 Unique aggregates announced from the ARIN address blocks: 139581 ARIN Region origin ASes present in the Internet Routing Table: 19241 ARIN Prefixes per ASN: 15.20 ARIN Region origin ASes announcing only one prefix: 7015 ARIN Region transit ASes present in the Internet Routing Table: 2011 Average ARIN Region AS path length visible: 4.6 Max ARIN Region AS path length visible: 34 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5235 Number of ARIN addresses announced to Internet: 1352798976 Equivalent to 80 /8s, 162 /16s and 19 /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: 275386 Total RIPE prefixes after maximum aggregation: 134813 RIPE Deaggregation factor: 2.04 Prefixes being announced from the RIPE address blocks: 273932 Unique aggregates announced from the RIPE address blocks: 175708 RIPE Region origin ASes present in the Internet Routing Table: 28945 RIPE Prefixes per ASN: 9.46 RIPE Region origin ASes announcing only one prefix: 12051 RIPE Region transit ASes present in the Internet Routing Table: 4022 Average RIPE Region AS path length visible: 5.3 Max RIPE Region AS path length visible: 69 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12499 Number of RIPE addresses announced to Internet: 731261568 Equivalent to 43 /8s, 150 /16s and 42 /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: 124610 Total LACNIC prefixes after maximum aggregation: 29637 LACNIC Deaggregation factor: 4.20 Prefixes being announced from the LACNIC address blocks: 120914 Unique aggregates announced from the LACNIC address blocks: 48887 LACNIC Region origin ASes present in the Internet Routing Table: 11270 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2546 Average LACNIC Region AS path length visible: 5.9 Max LACNIC Region AS path length visible: 75 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9227 Number of LACNIC addresses announced to Internet: 171832064 Equivalent to 10 /8s, 61 /16s and 243 /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: 35543 Total AfriNIC prefixes after maximum aggregation: 6730 AfriNIC Deaggregation factor: 5.28 Prefixes being announced from the AfriNIC address blocks: 48225 Unique aggregates announced from the AfriNIC address blocks: 13561 AfriNIC Region origin ASes present in the Internet Routing Table: 1923 AfriNIC Prefixes per ASN: 25.08 AfriNIC Region origin ASes announcing only one prefix: 694 AfriNIC Region transit ASes present in the Internet Routing Table: 377 Average AfriNIC Region AS path length visible: 6.0 Max AfriNIC Region AS path length visible: 59 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1282 Number of AfriNIC addresses announced to Internet: 104941568 Equivalent to 6 /8s, 65 /16s and 72 /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 11144 8759 105 CHINAMOBILE-CN China Mobile Communication 7545 6171 847 649 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4779 4192 76 ERX-CERNET-BKB China Education and Resear 9498 4411 534 308 BBIL-AP BHARTI Airtel Ltd., IN 7552 3919 1332 26 VIETEL-AS-AP Viettel Group, VN 7713 3716 1044 67 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3288 1869 103 VNPT-AS-VN VNPT Corp, VN 24560 2887 855 532 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4766 2352 11521 616 KIXS-AS-KR Korea Telecom, KR 45090 2209 1439 86 TENCENT-NET-AP Shenzhen Tencent Computer 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 13689 40939 5231 AMAZON-02, US 11492 4762 316 595 CABLEONE, US 7155 3862 286 85 VIASAT-SP-BACKBONE, US 6327 3636 1320 81 SHAW, CA 174 3476 8745 877 COGENT-174, US 22773 3346 3032 169 ASN-CXA-ALL-CCI-22773-RDC, US 749 3229 54783 2480 DNIC-AS-00749, US 396982 3187 3854 427 GOOGLE-CLOUD-PLATFORM, US 16625 3004 1251 2218 AKAMAI-AS, US 36352 2816 230 857 AS-COLOCROSSING, 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 7696 1713 148 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 3951 3395 127 AKAMAI-ASN1, NL 9009 3887 358 2083 M247, RO 12389 3121 2305 888 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2402 361 579 TELLCOM-AS, TR 212238 2272 166 1659 CDNEXT, GB 8452 1614 1852 14 TE-AS TE-AS, EG 13188 1606 100 34 TRIOLAN, UA 62240 1414 94 738 CLOUVIDER Clouvider - Global ASN, GB 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 12195 3254 578 UNINET, MX 10620 3502 481 1019 Telmex Colombia S.A., CO 13999 2493 541 357 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1374 2436 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1340 787 207 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1204 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1200 371 22 Telefonica del Peru S.A.A., PE 22884 1061 67 374 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 6503 1041 373 162 Axtel, S.A.B. de C.V., MX 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 1820 644 27 RAYA-AS, EG 24863 1633 389 16 LINKdotNET-AS, EG 29571 1607 102 33 ORANGE-COTE-IVOIRE, CI 36992 1431 1519 280 ETISALAT-MISR, EG 36903 1249 554 96 MT-MPLS, MA 37069 1107 1100 18 MOBINIL, EG 36935 1066 523 47 Vodafone-, EG 20011 981 185 286 INTERNET-SOLUTIONS, ZA 36914 564 82 3 KENET-AS, KE 15399 542 57 59 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 13689 40939 5231 AMAZON-02, US 8151 12195 3254 578 UNINET, MX 9808 11144 8759 105 CHINAMOBILE-CN China Mobile Communication 12479 7696 1713 148 UNI2-AS, ES 7545 6171 847 649 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 4538 4779 4192 76 ERX-CERNET-BKB China Education and Resear 11492 4762 316 595 CABLEONE, US 9498 4411 534 308 BBIL-AP BHARTI Airtel Ltd., IN 20940 3951 3395 127 AKAMAI-ASN1, NL Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 12195 11617 UNINET, MX 9808 11144 11039 CHINAMOBILE-CN China Mobile Communications Grou 12479 7696 7548 UNI2-AS, ES 7545 6171 5522 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 4538 4779 4703 ERX-CERNET-BKB China Education and Research Net 11492 4762 4167 CABLEONE, US 9498 4411 4103 BBIL-AP BHARTI Airtel Ltd., IN 7552 3919 3893 VIETEL-AS-AP Viettel Group, VN 20940 3951 3824 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 22542 UNALLOCATED 8.7.205.0/24 3356 LEVEL3, US 33123 UNALLOCATED 8.10.69.0/24 174 COGENT-174, US 46639 UNALLOCATED 8.17.66.0/24 701 UUNET, US 53775 UNALLOCATED 8.20.88.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 46887 CROWNCASTLE-AS46887, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 394804 UNALLOCATED 8.33.225.0/24 3356 LEVEL3, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 46639 UNALLOCATED 8.38.73.0/24 3356 LEVEL3, 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: 6939 HURRICANE, 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 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.155.208.0/24 Origin: 396169 AS-GHCIL-01, US 23.155.208.0/24 Transit: 35985 ONERINGNET-ATL-1, US 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 /11:92 /12:300 /13:582 /14:1211 /15:2140 /16:13919 /17:8329 /18:13756 /19:24798 /20:44789 /21:52198 /22:112503 /23:102842 /24:608991 /25:794 /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 6616 7696 UNI2-AS, ES 8151 6413 12195 UNINET, MX 11492 3559 4762 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3431 3636 SHAW, CA 7155 2821 3862 VIASAT-SP-BACKBONE, US 22773 2496 3346 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2377 13689 AMAZON-02, US 30036 2246 2587 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2189 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) ---------------------------------------------- 1:1726 2:1491 3:819 4:10 5:4709 6:162 7:6 8:1596 9:1 11:172 12:1346 13:451 14:2559 15:360 16:285 17:379 18:920 20:545 21:4 22:188 23:7599 24:2820 25:2 27:2711 29:19 31:3297 32:39 33:1 34:80 35:257 36:3102 37:4591 38:9372 39:908 40:166 41:4202 42:953 43:2598 44:378 45:18624 46:5116 47:325 49:1954 50:1899 51:592 52:1567 54:328 55:1091 56:11 57:269 58:2148 59:1366 60:1171 61:2811 62:2936 63:1801 64:5452 65:2179 66:4661 67:3049 68:1132 69:3861 70:1075 71:639 72:2828 74:2793 75:1509 76:620 77:2717 78:1882 79:1718 80:2240 81:2063 82:3157 83:1450 84:1876 85:3460 86:1081 87:2392 88:1302 89:4421 90:770 91:8407 92:2721 93:2913 94:4028 95:4348 96:1425 97:312 98:981 99:698 100:73 101:1205 102:3818 103:32298 104:5149 105:765 106:1035 107:2668 108:1252 109:4094 110:2236 111:3336 112:2133 113:1539 114:1998 115:2120 116:2065 117:2529 118:2359 119:1946 120:2022 121:1432 122:2789 123:2195 124:1636 125:2909 126:91 128:1598 129:957 130:1302 131:2014 132:780 133:449 134:1521 135:350 136:1349 137:1174 138:2836 139:1582 140:1610 141:1510 142:1900 143:1842 144:1138 145:545 146:2185 147:2106 148:2711 149:2894 150:1253 151:1976 152:2095 153:512 154:7466 155:1745 156:3029 157:1908 158:1331 159:2497 160:3589 161:1850 162:3846 163:2200 164:1858 165:1983 166:1499 167:1961 168:4015 169:795 170:5125 171:1021 172:4466 173:3332 174:921 175:1297 176:3707 177:4739 178:3725 179:2310 180:2636 181:4072 182:3444 183:1861 184:2077 185:21605 186:5197 187:4522 188:4261 189:4297 190:9624 191:1488 192:11322 193:9486 194:7826 195:5565 196:3281 197:3668 198:6209 199:8533 200:8246 201:6379 202:10491 203:10585 204:4581 205:3643 206:4490 207:3629 208:4264 209:5181 210:4862 211:2639 212:4588 213:3744 214:1029 215:48 216:6767 217:3167 218:1412 219:553 220:2141 221:1138 222:857 223:2494 End of report

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LDP interop with RSVP and SR
by Saku Ytti 13 Jun '25

13 Jun '25

I just want to double check that I'm not confused. Since day1 we have had excellent LDP/SR interop, that is, for your SR network, connecting LDP-only nodes or islands doesn't require soiling your entire SR network with LDP state. Do we really not have a similar solution for RSVP? Let's imagine an RSVP-only network, where we add a single LDP-only speaker. Instead of tLDP from every RSVPOnly to RSVPBorder and then LDP between RSVPBorder and LDPOnly, why can't RSVPBorder handle the interop? RSVP -> LDP - Every RSVPOnly would have 1 LSP to RSVPBorder and 1 LSP for each LDP nodes RSVPBorder meets, via RESV TunnelId or such discriminator you can of course have arbitrary amount of LSPs between two endpoints - RSVPBorder will advertise different labels for each of these LSPs, like it would for split LSPs or QoS based LSPs - the LSP terminating on RSVPBorder is popped, the LSPs intended for LDP speaker are swapped from RSVP label to the LDP label LDP -> RSVP - RSVPBorder synthesises for each RSVPOnly/32 LDP route to LDPOnly - As LDPOnly sends LDP label to RSVPBorder, RSVPBorder swaps it to the RSVP label Now in practice when this requirement exists, everyone is running full mesh tLDP, because that's easy to provision. Ending up having thousands of useless LDP sessions with state and fragility that comes with it. -- ++ytti

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