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Proposals at ITU-T for Internet Evolution Raise Serious Concerns; According to ISOC
by Nanog News 12 Aug '22

12 Aug '22

*Proposals at ITU-T for Internet Evolution Raise Serious Concerns; According to ISOC* *Huawei, Chinese Carriers, and China want to Redesign a Prominent Part of the Internet via a set of “New IP” Proposals* Any new initiative has pros and cons, but according to ISOC (Internet Society), the “New IP” proposals are threatening and should be discussed further. We caught up with Hosein Badran to give us the good, bad, and ugly of the “New IP” proposals. Badran is a senior director for ISOC and leads the technology, policy, and advocacy initiatives in Internet access, infrastructure, and trust domains. *READ NOW* <https://www.nanog.org/stories/new-ip-proposals-are-a-threat-according-to-is…>

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Weekly Global IPv4 Routing Table Report
by Routing Table Analysis Role Account 12 Aug '22

12 Aug '22

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 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 13 Aug, 2022 BGP Table (Global) as seen in Japan. Report Website: https://thyme.apnic.net Detailed Analysis: https://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 906415 Prefixes after maximum aggregation (per Origin AS): 341627 Deaggregation factor: 2.65 Unique aggregates announced (without unneeded subnets): 438270 Total ASes present in the Internet Routing Table: 73570 Prefixes per ASN: 12.32 Origin-only ASes present in the Internet Routing Table: 63137 Origin ASes announcing only one prefix: 25993 Transit ASes present in the Internet Routing Table: 10433 Transit-only ASes present in the Internet Routing Table: 394 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 55 Max AS path prepend of ASN (265020) 50 Prefixes from unregistered ASNs in the Routing Table: 976 Number of instances of unregistered ASNs: 976 Number of 32-bit ASNs allocated by the RIRs: 39963 Number of 32-bit ASNs visible in the Routing Table: 33196 Prefixes from 32-bit ASNs in the Routing Table: 158224 Number of bogon 32-bit ASNs visible in the Routing Table: 12 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 512 Number of addresses announced to Internet: 3071462016 Equivalent to 183 /8s, 18 /16s and 202 /24s Percentage of available address space announced: 83.0 Percentage of allocated address space announced: 83.0 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: 307865 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 236418 Total APNIC prefixes after maximum aggregation: 67273 APNIC Deaggregation factor: 3.51 Prefixes being announced from the APNIC address blocks: 231493 Unique aggregates announced from the APNIC address blocks: 96306 APNIC Region origin ASes present in the Internet Routing Table: 12876 APNIC Prefixes per ASN: 17.98 APNIC Region origin ASes announcing only one prefix: 3730 APNIC Region transit ASes present in the Internet Routing Table: 1756 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 26 Number of APNIC region 32-bit ASNs visible in the Routing Table: 8107 Number of APNIC addresses announced to Internet: 773195776 Equivalent to 46 /8s, 22 /16s and 8 /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, 131072-151865 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: 264514 Total ARIN prefixes after maximum aggregation: 120926 ARIN Deaggregation factor: 2.19 Prefixes being announced from the ARIN address blocks: 264776 Unique aggregates announced from the ARIN address blocks: 127575 ARIN Region origin ASes present in the Internet Routing Table: 19055 ARIN Prefixes per ASN: 13.90 ARIN Region origin ASes announcing only one prefix: 6929 ARIN Region transit ASes present in the Internet Routing Table: 1917 Average ARIN Region AS path length visible: 3.8 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 4588 Number of ARIN addresses announced to Internet: 1295966720 Equivalent to 77 /8s, 62 /16s and 226 /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, 393216-401308 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, 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: 260316 Total RIPE prefixes after maximum aggregation: 119284 RIPE Deaggregation factor: 2.18 Prefixes being announced from the RIPE address blocks: 257614 Unique aggregates announced from the RIPE address blocks: 153269 RIPE Region origin ASes present in the Internet Routing Table: 28202 RIPE Prefixes per ASN: 9.13 RIPE Region origin ASes announcing only one prefix: 12086 RIPE Region transit ASes present in the Internet Routing Table: 4009 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 10794 Number of RIPE addresses announced to Internet: 717796224 Equivalent to 42 /8s, 200 /16s and 179 /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 196608-213403 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: 116177 Total LACNIC prefixes after maximum aggregation: 27812 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 115871 Unique aggregates announced from the LACNIC address blocks: 48885 LACNIC Region origin ASes present in the Internet Routing Table: 10980 LACNIC Prefixes per ASN: 10.55 LACNIC Region origin ASes announcing only one prefix: 2666 LACNIC Region transit ASes present in the Internet Routing Table: 2246 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 55 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8709 Number of LACNIC addresses announced to Internet: 176389120 Equivalent to 10 /8s, 131 /16s and 124 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + 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: 28014 Total AfriNIC prefixes after maximum aggregation: 5577 AfriNIC Deaggregation factor: 5.02 Prefixes being announced from the AfriNIC address blocks: 36149 Unique aggregates announced from the AfriNIC address blocks: 11797 AfriNIC Region origin ASes present in the Internet Routing Table: 1668 AfriNIC Prefixes per ASN: 21.67 AfriNIC Region origin ASes announcing only one prefix: 582 AfriNIC Region transit ASes present in the Internet Routing Table: 323 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 34 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 998 Number of AfriNIC addresses announced to Internet: 107817216 Equivalent to 6 /8s, 109 /16s and 41 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 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 9081 8884 50 CHINAMOBILE-CN China Mobile Communicati 7545 5912 789 699 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4708 4192 75 ERX-CERNET-BKB China Education and Rese 7552 3604 1330 20 VIETEL-AS-AP Viettel Group, VN 7713 3508 1042 61 TELKOMNET-AS-AP PT Telekomunikasi Indon 45899 3377 1877 67 VNPT-AS-VN VNPT Corp, VN 4766 2501 11125 603 KIXS-AS-KR Korea Telecom, KR 9498 2426 499 238 BBIL-AP BHARTI Airtel Ltd., IN 45090 2176 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute 24560 2158 851 404 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd 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 6859 10405 2726 AMAZON-02, US 11492 4549 301 570 CABLEONE, US 7155 3906 265 32 VIASAT-SP-BACKBONE, US 22773 3842 3069 363 ASN-CXA-ALL-CCI-22773-RDC, US 16625 3477 1791 2508 AKAMAI-AS, US 6327 3448 1319 62 SHAW, CA 749 3029 50730 2287 DNIC-AS-00749, US 30036 2604 371 288 MEDIACOM-ENTERPRISE-BUSINESS, US 396982 2523 3384 360 GOOGLE-CLOUD-PLATFORM, US 209 2370 4936 407 CENTURYLINK-US-LEGACY-QWEST, 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 6858 1730 144 UNI2-AS, ES 9121 6608 1692 17 TTNET, TR 20940 4052 3348 219 AKAMAI-ASN1, NL 39891 4006 234 46 ALJAWWALSTC-AS, SA 8551 3992 374 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 12389 2941 2290 911 ROSTELECOM-AS, RU 6849 2755 355 21 UKRTELNET, UA 9009 2604 254 1333 M247, GB 34984 2247 358 630 TELLCOM-AS, TR 47331 2063 324 1563 TTNET, TR 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 10834 3399 557 Uninet S.A. de C.V., MX 10620 3486 515 778 Telmex Colombia S.A., CO 11830 2384 369 64 Instituto Costarricense de Electricidad 13999 1952 320 521 Mega Cable, S.A. de C.V., MX 28573 1361 2329 265 Claro NXT Telecomunicacoes Ltda, BR 6503 1288 338 520 Axtel, S.A.B. de C.V., MX 3816 1272 697 155 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6147 1106 369 21 Telefonica del Peru S.A.A., PE 11664 1046 176 460 Techtel LMDS Comunicaciones Interactiva 26615 976 2466 43 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 1546 521 31 RAYA-AS, EG 24863 1542 393 21 LINKdotNET-AS, EG 36992 1324 1519 268 ETISALAT-MISR, EG 36903 1199 545 114 MT-MPLS, MA 29571 976 66 52 ORANGE-COTE-IVOIRE, CI 36935 801 520 42 Vodafone-, EG 6713 611 1863 34 IAM-AS, MA 15399 519 52 39 WANANCHI-, KE 37342 481 32 1 MOVITEL, MZ 23889 401 232 16 MauritiusTelecom, MU 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 8151 10834 3399 557 Uninet S.A. de C.V., MX 9808 9081 8884 50 CHINAMOBILE-CN China Mobile Communicati 16509 6859 10405 2726 AMAZON-02, US 12479 6858 1730 144 UNI2-AS, ES 9121 6608 1692 17 TTNET, TR 7545 5912 789 699 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4708 4192 75 ERX-CERNET-BKB China Education and Rese 11492 4549 301 570 CABLEONE, US 20940 4052 3348 219 AKAMAI-ASN1, NL 39891 4006 234 46 ALJAWWALSTC-AS, SA Complete listing at https://thyme.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 9081 9031 CHINAMOBILE-CN China Mobile Communications Grou 12479 6858 6714 UNI2-AS, ES 9121 6608 6591 TTNET, TR 7545 5912 5213 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4708 4633 ERX-CERNET-BKB China Education and Research Net 16509 6859 4133 AMAZON-02, US 11492 4549 3979 CABLEONE, US 39891 4006 3960 ALJAWWALSTC-AS, SA 8551 3992 3953 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 7155 3906 3874 VIASAT-SP-BACKBONE, US 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 398083 UNALLOCATED 5.133.124.0/24 399587 UT, US 33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US 18604 UNALLOCATED 8.25.204.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 18798 UNALLOCATED 8.40.106.0/24 6461 ZAYO-6461, US 394856 UNALLOCATED 8.40.216.0/24 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 23.141.0.0/24 Origin: 395350 UNASSIGNED 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED 27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet 41.57.124.0/22 Origin: 37442 UNASSIGNED 41.57.124.0/22 Transit: 37204 TELONE, ZW 41.57.124.0/23 Origin: 37442 UNASSIGNED 41.57.124.0/23 Transit: 37204 TELONE, ZW 41.57.124.0/24 Origin: 37442 UNASSIGNED 41.57.124.0/24 Transit: 37204 TELONE, ZW 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 /9:13 /10:40 /11:101 /12:303 /13:595 /14:1209 /15:2065 /16:13536 /17:8326 /18:13926 /19:25105 /20:44437 /21:52302 /22:109236 /23:97011 /24:537393 /25:801 /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 5845 6858 UNI2-AS, ES 9121 5766 6608 TTNET, TR 8151 4556 10834 Uninet S.A. de C.V., MX 11492 3464 4549 CABLEONE, US 8551 3455 3992 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 6327 3260 3448 SHAW, CA 39891 3189 4006 ALJAWWALSTC-AS, SA 7155 2995 3906 VIASAT-SP-BACKBONE, US 22773 2853 3842 ASN-CXA-ALL-CCI-22773-RDC, US 6849 2613 2755 UKRTELNET, UA Complete listing at https://thyme.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1963 2:1024 3:157 4:5 5:3869 6:111 7:6 8:1576 9:1 11:173 12:1647 13:338 14:2366 15:242 16:44 17:383 18:189 20:242 21:4 22:188 23:5854 24:2417 25:6 27:2608 29:19 31:2418 32:95 34:7 35:87 36:1821 37:4448 38:3393 39:722 40:152 41:3878 42:1138 43:2202 44:289 45:16087 46:4157 47:332 49:1695 50:1944 51:237 52:1459 54:385 55:847 56:8 57:58 58:1792 59:1169 60:964 61:2288 62:2543 63:1930 64:5576 65:2376 66:4875 67:2984 68:1207 69:4153 70:1316 71:682 72:3043 74:2643 75:1398 76:583 77:2247 78:3948 79:3127 80:2013 81:1792 82:1500 83:1212 84:1380 85:3710 86:744 87:1911 88:2823 89:3406 90:547 91:7646 92:2042 93:2544 94:3514 95:4795 96:1296 97:350 98:1023 99:736 100:77 101:1063 102:2209 103:29605 104:4548 105:467 106:874 107:2548 108:868 109:4331 110:2005 111:3328 112:2043 113:1537 114:1483 115:2010 116:1912 117:2448 118:2303 119:1845 120:1785 121:1077 122:2518 123:2078 124:1578 125:2107 128:1245 129:1047 130:974 131:2073 132:781 133:378 134:1942 135:298 136:856 137:871 138:2506 139:1507 140:939 141:1446 142:1332 143:1408 144:1199 145:341 146:1855 147:1509 148:2216 149:1766 150:863 151:1070 152:1868 153:464 154:3682 155:1456 156:1740 157:1271 158:1036 159:2207 160:2500 161:1321 162:3493 163:1347 164:1644 165:1632 166:783 167:1755 168:3852 169:880 170:4536 171:841 172:3324 173:3125 174:1037 175:1137 176:3657 177:4781 178:3544 179:2178 180:2335 181:3245 182:3235 183:1937 184:2379 185:19618 186:4482 187:3839 188:4000 189:3384 190:8962 191:1448 192:10967 193:8683 194:7097 195:5074 196:2950 197:2408 198:6011 199:6034 200:7602 201:5806 202:10493 203:10035 204:4514 205:3421 206:3769 207:3439 208:4042 209:4697 210:4367 211:2407 212:4078 213:3473 214:1129 215:65 216:6396 217:2642 218:1286 219:574 220:2014 221:951 222:827 223:1999 End of report

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IERS ponders reverse leapsecond...
by Jay Ashworth 12 Aug '22

12 Aug '22

General press loses its *mind*: https://www.cbsnews.com/news/earth-spinning-faster-than-usual-shortest-day-… Have you tested leap second handling, especially in reverse? How do you simulate it? Are there existing test harnesses for simulating it? Cheers, -- jra -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

14 18

400G forwarding - how does it work?
by James Bensley 12 Aug '22

12 Aug '22

Hi All, I've been trying to understand how forwarding at 400G is possible, specifically in this example, in relation to the Broadcom J2 chips, but I don't the mystery is anything specific to them... According to the Broadcom Jericho2 BCM88690 data sheet it provides 4.8Tbps of traffic processing and supports packet forwarding at 2Bpps. According to my maths that means it requires packet sizes of 300Bs to reach line rate across all ports. The data sheet says packet sizes above 284B, so I guess this is excluding some headers like the inter-frame gap and CRC (nothing after the PHY/MAC needs to know about them if the CRC is valid)? As I interpret the data sheet, J2 should supports chassis with 12x 400Gbps ports at line rate with 284B packets then. Jericho2 can be linked to a BCM16K for expanded packet forwarding tables and lookup processing (i.e. to hold the full global routing table, in such a case, forwarding lookups are offloaded to the BCM16K). The BCM16K documentation suggests that it uses TCAM for exact matching (e.g.,for ACLs) in something called the "Database Array" (with 2M 40b entries?), and SRAM for LPM (e.g., IP lookups) in something called the "User Data Array" (with 16M 32b entries?). A BCM16K supports 16 parallel searches, which means that each of the 12x 400G ports on a Jericho2 could perform an forwarding lookup at same time. This means that the BCM16K "only" needs to perform forwarding look-ups at a linear rate of 1x 400Gbps, not 4.8Tbps, and "only" for packets larger than 284 bytes, because that is the Jericho2 line-rate Pps rate. This means that each of the 16 parallel searches in the BCM16K, they need to support a rate of 164Mpps (164,473,684) to reach 400Gbps. This is much more in the realm of feasible, but still pretty extreme... 1 second / 164473684 packets = 1 packet every 6.08 nanoseconds, which is within the access time of TCAM and SRAM but this needs to include some computing time too e.g. generating a key for a lookup and passing the results along the pipeline etc. The BCM16K has a clock speed of 1Ghz (1,000,000,000, cycles per second, or cycle every 1 nano second) and supports an SRAM memory access in a single clock cycle (according to the data sheet). If one cycle is required for an SRAM lookup, the BCM16K only has 5 cycles to perform other computation tasks, and the J2 chip needs to do the various header re-writes and various counter updates etc., so how is magic this happening?!? The obvious answer is that it's not magic and my understanding is fundamentally flawed, so please enlighten me. Cheers, James.

18 64

Facebook down?
by Michael Thomas 11 Aug '22

11 Aug '22

They haven't been serving up images for like an hour or so and now it's showing their fail whale. Not sure if it's a (internal) network problem or not. I'm in California fwiw. Mike

3 5

Getting Fiber to My Town by Jared Mauch
by Jared Brown 11 Aug '22

11 Aug '22

I believe this belongs here: Getting Fiber to My Town by Jared Mauch https://www.youtube.com/watch?v=ASXJgvy3mEg (YouTube video of NLnog presentation) https://nlnog.net/static/live/nlnog_live_sep_2020_jared.pdf (slides for presentation) https://news.ycombinator.com/item?id=24424910#24430901 (discussion on Hacker News with Jared participating) https://washftth.com/ (project homepage) I find this an interesting description of how to apply skills that we normally only use at work to solve connectivity issues at home. Quite timely too, as home connectivity is needed more than ever. Highlights: - location: just outside of Ann Arbor - no fixed broadband since 2002 -> build own network - pre-wire neighbors with fiber drops and feed them off WISP first - lots of work to sign up customers, having to resort to snailmail to reach all - 70% of homes passed signed up - Have ASN, get IPv6 and IPv4 allocation, multihome and connect to local IXP - purchase equipment: fusion splicer, OTDR, materials, directional drill(!) - hire contractors, deal with all manner of problems, theft, stop work orders, unbudgeted costs, unmarked/badly marked utilities, hitting (own) utilities - build own fiber blower(!) for blowing in fiber in ducts - splice, OTDR, resplice, schedule installs ... which don't always go to plan - Upstream very helpful, offered a Cisco 6500 as CPE, however respectfuly declined and went with Arista - Link up! Network is now live with 17 subscribers hooked up. More waiting to be connected - Mixed Active Ethernet and GPON - latency drops from 30 ms to 8 ms, bandwidth from 20-30M to 730M, total commit 1.5G on 10G port, plans from 50M to 500M - SPAM! IPv4 brokers and the usual unsolicited contacts from bottom of the baller IP transit providers - Costs: $126k in 2020, $95k contractors, $32k materials and equipment. Total outlay ~$150k + years of sweat equity. Important to spread out costs over longer period of time to be able to afford. Offset costs by using pre-pay model (Can pay $5,000 up-front and receive $50 credit for 100 months) All in all it was an excellent presentation. I only wish Jared had spent some more time on how he had to become a telco and how this got him better access to the public right of way. Of course, some more details on his directional boring and some nice video of him running the drill would have been a cherry on top :) I'd like to congratulate Jared on lighting up his network and wish him success in running it. I did a similar build almost twenty years ago and regret I didn't have the forethought to document the effort better then. Not that there was a YouTube to put it all on then :) You can find the other presentations from NLnog live September 2020 at https://www.youtube.com/channel/UCVz78FbsOJ6v6xb6S2GpvWQ Jared, not the Mauch one

10 13

Peering with Google and Microsoft
by Oskar Borgqvist 11 Aug '22

11 Aug '22

Hi Nanog We have tried to get peering with Google but only get answers that they are making their peering system better. I have received this answer for over 1 year. The reason why we needed peering to Google is that they do not send out exact prefixes over IXP RS, which means that our traffic from Sweden down to Germany and up again to Sweden again. This has created a bit of a problem for us. If anyone could help us with this it would be appreciated. Or can give an explanation. Since then, we have also tried to get peering with Microsoft without success. We have tried to contact them via their peering email without success. Would appreciate help here as well. Sincerely, Oskar Borgqvist -- Oskar Borgqvist CEO/Owner/Network Engineer Mail: oskar(a)karabro.se Tele: +46 406 68 80 96 Vi bygger broar mellan internet och människor

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RE: IPv6 internet broken, cogent/telia/hurricane not peering
by VOLKAN KIRIK 11 Aug '22

11 Aug '22

hello nobody has to peer with some operator for free. they are simply trading internet services. they do not have to believe in FREE (as in price) internet connectivity.. if they peered you, you would decrease the price of the products even more and more... ask cogentco (as174) for paid peering. they will give you nice paid peering or ip transit offer that you can use for both ipv4 and ipv6. for example i would assume they would be OK charging he.net (as6939) 5 usd cent per megabit. you need to understand that you are never going to become tier1 without support from as174. they are currently cheapest and they are okay with dual homing too. think like united nations security council. you must think twice; are you gaining any profit by segmenting world-wide internet? or are you loosing prospective single-homing customers because you lack connectivity to as174 clients? we must think big. asking for a money is OKay while begging for FREE service is not... operating NOC and backbone has some expenses that henet wouldnt understand with their rented links. cogentco bear much more expenses than henet i am not here to insult henet but i honestly think that they are contemptible... just like google's peering decision makers. sir! if you have become big content/eyeball operator, doesnt mean that every operator in the industry have to respect your tier-1 policy and give you their services for free. thats the thing henet and google couldnt understand. think like UNSC and you will understand even USA can not do anything they want in the world, as RU has voting right, too. TL;DR; instead of crying here and begging for free service. send real representatives that could negotiate the money you would pay. bye

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IoT - The end of the internet
by Christopher Wolff 11 Aug '22

11 Aug '22

Hi folks, Has anyone proposed that the adoption of billions of IoT devices will ultimately ‘break’ the Internet? It’s not a rhetorical question I promise, just looking for a journal or other scholarly article that implies that the Internet is doomed.

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Sflow/netflow/ipfix open source security projects
by Drew Weaver 10 Aug '22

10 Aug '22

Hello, I am interested in getting involved with an open source project in my spare time. I thought that it may be useful to contribute to an open source project that uses flow data to check for lateral movement inside of networks and also to check for known bads in remote connections. This seems like really low hanging fruit from a defense scenario. I've tried googling around for something like this and I have come up short. Is anyone aware of any such projects? Thanks, -Drew

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