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Consolidation of Email Platforms Bad for Email?
by Mike Hammett 04 Oct '20

04 Oct '20

I originally asked on mailops, but here is a much wider net and I suspect there's a lot of overlap in interest. I had read an article one time, somewhere about the ongoing consolidation of e-mail into a handful of providers was bad for the Internet as a whole. It was some time ago and thus, the details have escaped me, so I was looking to refresh my recollection. Have any of you read a similar article before? If so, can you link me to it? ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com

9 9

Weekly Routing Table Report
by cscora＠apnic.net 02 Oct '20

02 Oct '20

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. Routing Table Report 04:00 +10GMT Sat 03 Oct, 2020 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 825359 Prefixes after maximum aggregation (per Origin AS): 314351 Deaggregation factor: 2.63 Unique aggregates announced (without unneeded subnets): 397439 Total ASes present in the Internet Routing Table: 69555 Prefixes per ASN: 11.87 Origin-only ASes present in the Internet Routing Table: 59753 Origin ASes announcing only one prefix: 24749 Transit ASes present in the Internet Routing Table: 9802 Transit-only ASes present in the Internet Routing Table: 303 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 53 Max AS path prepend of ASN ( 29951) 51 Prefixes from unregistered ASNs in the Routing Table: 846 Number of instances of unregistered ASNs: 847 Number of 32-bit ASNs allocated by the RIRs: 33664 Number of 32-bit ASNs visible in the Routing Table: 27841 Prefixes from 32-bit ASNs in the Routing Table: 129355 Number of bogon 32-bit ASNs visible in the Routing Table: 15 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 459 Number of addresses announced to Internet: 2862713472 Equivalent to 170 /8s, 161 /16s and 138 /24s Percentage of available address space announced: 77.3 Percentage of allocated address space announced: 77.3 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.5 Total number of prefixes smaller than registry allocations: 276628 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 217410 Total APNIC prefixes after maximum aggregation: 63639 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 211241 Unique aggregates announced from the APNIC address blocks: 86657 APNIC Region origin ASes present in the Internet Routing Table: 10890 APNIC Prefixes per ASN: 19.40 APNIC Region origin ASes announcing only one prefix: 3045 APNIC Region transit ASes present in the Internet Routing Table: 1596 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 30 Number of APNIC region 32-bit ASNs visible in the Routing Table: 6007 Number of APNIC addresses announced to Internet: 778823680 Equivalent to 46 /8s, 107 /16s and 232 /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, 131072-141625 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: 241089 Total ARIN prefixes after maximum aggregation: 110999 ARIN Deaggregation factor: 2.17 Prefixes being announced from the ARIN address blocks: 238805 Unique aggregates announced from the ARIN address blocks: 116832 ARIN Region origin ASes present in the Internet Routing Table: 18606 ARIN Prefixes per ASN: 12.83 ARIN Region origin ASes announcing only one prefix: 6777 ARIN Region transit ASes present in the Internet Routing Table: 1905 Average ARIN Region AS path length visible: 3.8 Max ARIN Region AS path length visible: 53 Number of ARIN region 32-bit ASNs visible in the Routing Table: 3444 Number of ARIN addresses announced to Internet: 1090132480 Equivalent to 64 /8s, 250 /16s and 26 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-399260 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 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: 230770 Total RIPE prefixes after maximum aggregation: 108541 RIPE Deaggregation factor: 2.13 Prefixes being announced from the RIPE address blocks: 226812 Unique aggregates announced from the RIPE address blocks: 136044 RIPE Region origin ASes present in the Internet Routing Table: 27423 RIPE Prefixes per ASN: 8.27 RIPE Region origin ASes announcing only one prefix: 11829 RIPE Region transit ASes present in the Internet Routing Table: 3880 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 9546 Number of RIPE addresses announced to Internet: 709350784 Equivalent to 42 /8s, 71 /16s and 213 /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: 111496 Total LACNIC prefixes after maximum aggregation: 25729 LACNIC Deaggregation factor: 4.33 Prefixes being announced from the LACNIC address blocks: 112649 Unique aggregates announced from the LACNIC address blocks: 47778 LACNIC Region origin ASes present in the Internet Routing Table: 10532 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2602 LACNIC Region transit ASes present in the Internet Routing Table: 1967 Average LACNIC Region AS path length visible: 4.9 Max LACNIC Region AS path length visible: 29 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8118 Number of LACNIC addresses announced to Internet: 174326272 Equivalent to 10 /8s, 100 /16s and 2 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-272796 + 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: 23747 Total AfriNIC prefixes after maximum aggregation: 4773 AfriNIC Deaggregation factor: 4.98 Prefixes being announced from the AfriNIC address blocks: 35393 Unique aggregates announced from the AfriNIC address blocks: 9754 AfriNIC Region origin ASes present in the Internet Routing Table: 1419 AfriNIC Prefixes per ASN: 24.94 AfriNIC Region origin ASes announcing only one prefix: 496 AfriNIC Region transit ASes present in the Internet Routing Table: 291 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 49 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 726 Number of AfriNIC addresses announced to Internet: 109619712 Equivalent to 6 /8s, 136 /16s and 170 /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 7545 5645 766 677 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4743 4193 74 ERX-CERNET-BKB China Education and Rese 7552 3604 1330 21 VIETEL-AS-AP Viettel Group, VN 45899 3242 1896 51 VNPT-AS-VN VNPT Corp, VN 7713 2713 829 625 TELKOMNET-AS-AP PT Telekomunikasi Indon 9808 2550 9043 60 CMNET-GD Guangdong Mobile Communication 4766 2348 11103 554 KIXS-AS-KR Korea Telecom, KR 9498 2301 450 231 BBIL-AP BHARTI Airtel Ltd., IN 4755 2145 441 193 TATACOMM-AS TATA Communications formerl 9394 2042 4914 18 CTTNET China TieTong Telecommunications Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 11492 4589 307 658 CABLEONE, US 16509 4339 8612 1998 AMAZON-02, US 7155 4034 264 32 VIASAT-SP-BACKBONE, US 22773 3653 2985 181 ASN-CXA-ALL-CCI-22773-RDC, US 6327 3349 1323 82 SHAW, CA 16625 3082 1623 2214 AKAMAI-AS, US 209 2483 5060 521 CENTURYLINK-US-LEGACY-QWEST, US 30036 2472 367 99 MEDIACOM-ENTERPRISE-BUSINESS, US 26484 2393 150 315 IKGUL-26484, US 5650 2312 2981 1625 FRONTIER-FRTR, US Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 6193 1652 136 UNI2-AS, ES 39891 3652 203 21 ALJAWWALSTC-AS, SA 8551 3438 379 45 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 20940 3208 2221 1030 AKAMAI-ASN1, EU 12389 2759 2275 864 ROSTELECOM-AS, RU 34984 2197 355 572 TELLCOM-AS, TR 9009 2182 242 1184 M247, GB 13188 1610 100 31 TRIOLAN, UA 58224 1272 839 520 TCI, IR 61317 1271 153 587 ASDETUK http://www.heficed.com, GB Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 8094 3327 605 Uninet S.A. de C.V., MX 10620 3393 531 511 Telmex Colombia S.A., CO 11830 2558 369 63 Instituto Costarricense de Electricidad 6503 1631 323 414 Axtel, S.A.B. de C.V., MX 7303 1482 953 268 Telecom Argentina S.A., AR 13999 1450 458 386 Mega Cable, S.A. de C.V., MX 28573 1355 2253 219 CLARO S.A., BR 3816 1155 577 160 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 6147 1146 379 39 Telefonica del Peru S.A.A., PE 11664 968 210 400 Techtel LMDS Comunicaciones Interactiva Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24863 1428 393 22 LINKdotNET-AS, EG 36992 1182 1527 125 ETISALAT-MISR, EG 24835 1106 464 28 RAYA-AS, EG 36903 918 480 94 MT-MPLS, MA 29571 701 68 12 ORANGE-COTE-IVOIRE, CI 6713 553 1863 34 IAM-AS, MA 15399 495 46 15 WANANCHI-, KE 37342 481 32 1 MOVITEL, MZ 36935 450 519 37 Vodafone-, EG 23889 345 232 16 MauritiusTelecom, MU Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 8094 3327 605 Uninet S.A. de C.V., MX 12479 6193 1652 136 UNI2-AS, ES 7545 5645 766 677 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4743 4193 74 ERX-CERNET-BKB China Education and Rese 11492 4589 307 658 CABLEONE, US 16509 4339 8612 1998 AMAZON-02, US 7155 4034 264 32 VIASAT-SP-BACKBONE, US 22773 3653 2985 181 ASN-CXA-ALL-CCI-22773-RDC, US 39891 3652 203 21 ALJAWWALSTC-AS, SA 7552 3604 1330 21 VIETEL-AS-AP Viettel Group, VN Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 12479 6193 6057 UNI2-AS, ES 7545 5645 4968 TPG-INTERNET-AP TPG Telecom Limited, AU 4538 4743 4669 ERX-CERNET-BKB China Education and Research Net 7155 4034 4002 VIASAT-SP-BACKBONE, US 11492 4589 3931 CABLEONE, US 39891 3652 3631 ALJAWWALSTC-AS, SA 7552 3604 3583 VIETEL-AS-AP Viettel Group, VN 22773 3653 3472 ASN-CXA-ALL-CCI-22773-RDC, US 8551 3438 3393 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 6327 3349 3267 SHAW, CA Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22357 UNALLOCATED 8.7.108.0/24 3356 LEVEL3, US 62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 174 COGENT-174, US 32985 UNALLOCATED 8.28.31.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 174 COGENT-174, US 23061 UNALLOCATED 8.39.119.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 46766 UNALLOCATED 8.44.208.0/24 3356 LEVEL3, US 40544 UNALLOCATED 12.0.33.0/24 6461 ZAYO-6461, US 46505 UNALLOCATED 12.7.131.0/24 7018 ATT-INTERNET4, US Complete listing at http://thyme.rand.apnic.net/current/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at http://thyme.rand.apnic.net/current/data-dsua Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.142.80.0/24 Origin: 10753 LVLT-10753, US Transit: 3356 LEVEL3, US 23.157.0.0/24 Origin: 395101 UNASSIGNED Transit: 33657 CMCS, US 27.100.7.0/24 Origin: 56096 UNASSIGNED Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet 27.126.156.0/22 Origin: 55827 UNASSIGNED Transit: 9930 TTNET-MY TIME dotCom Berhad No. 14, Jala 27.126.156.0/23 Origin: 55827 UNASSIGNED Transit: 9930 TTNET-MY TIME dotCom Berhad No. 14, Jala Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:9 /9:12 /10:39 /11:100 /12:288 /13:577 /14:1175 /15:1932 /16:13474 /17:8329 /18:14017 /19:25606 /20:41134 /21:49465 /22:102574 /23:86079 /24:479297 /25:1252 /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 5158 6193 UNI2-AS, ES 11492 3678 4589 CABLEONE, US 6327 3146 3349 SHAW, CA 7155 3122 4034 VIASAT-SP-BACKBONE, US 8551 2897 3438 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 22773 2823 3653 ASN-CXA-ALL-CCI-22773-RDC, US 8151 2821 8094 Uninet S.A. de C.V., MX 39891 2801 3652 ALJAWWALSTC-AS, SA 30036 2215 2472 MEDIACOM-ENTERPRISE-BUSINESS, US 5650 1995 2312 FRONTIER-FRTR, US Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1642 2:1170 3:33 4:19 5:3605 6:54 8:1483 9:1 11:1 12:1767 13:350 14:2350 15:72 16:8 17:296 18:88 20:111 23:4018 24:2343 25:3 27:2314 31:2156 32:120 34:1 35:43 36:998 37:3497 38:1877 39:459 40:150 41:3717 42:636 43:2156 44:218 45:15019 46:3535 47:320 49:1539 50:1659 51:101 52:1116 54:231 55:696 56:6 57:54 58:1636 59:1168 60:793 61:2311 62:2164 63:2018 64:5252 65:2369 66:5075 67:2910 68:1166 69:4081 70:1396 71:678 72:2971 74:2565 75:1455 76:673 77:1974 78:1662 79:2632 80:2064 81:1610 82:1325 83:1229 84:1250 85:2680 86:562 87:1792 88:937 89:2833 90:383 91:7154 92:1575 93:2500 94:2802 95:3397 96:1249 97:337 98:925 99:980 100:87 101:1026 102:1109 103:24503 104:3576 105:383 106:909 107:2121 108:693 109:3774 110:1959 111:2345 112:1690 113:1432 114:1529 115:1832 116:1830 117:2105 118:2174 119:1743 120:911 121:1049 122:2556 123:2037 124:1628 125:2137 128:1372 129:1243 130:723 131:1944 132:764 133:306 134:1365 135:331 136:637 137:881 138:2295 139:1053 140:745 141:1088 142:971 143:1206 144:1152 145:353 146:1393 147:1237 148:2148 149:1191 150:762 151:1332 152:1558 153:436 154:4507 155:1266 156:3017 157:1105 158:880 159:1984 160:1976 161:1076 162:3189 163:893 164:1510 165:1322 166:591 167:1671 168:3537 169:618 170:4360 171:774 172:1994 173:2761 174:972 175:1044 176:2795 177:4290 178:2704 179:1878 180:2248 181:2555 182:3121 183:1445 184:2441 185:17028 186:3925 187:3024 188:3317 189:2684 190:9020 191:1457 192:10459 193:7723 194:6311 195:4542 196:3149 197:2017 198:6059 199:5934 200:7321 201:5268 202:10560 203:10187 204:4648 205:3092 206:3202 207:3265 208:4000 209:4473 210:4198 211:2073 212:3507 213:3271 214:1173 215:60 216:6121 217:2477 218:852 219:614 220:2042 221:916 222:974 223:1641 End of report

1 0

CIDR cleanup
by John Von Essen 02 Oct '20

02 Oct '20

Sorry if this is slightly off-topic, but I am writing some code for a custom GeoDNS routemap. My starting data set is a raw list of /24 subnets, no prefix aggregation has been done. In other words, its the entire BGP routing table in /24 prefixes - tagged by Geo region. Each region is its own txt file with a dump of /24’s. As a result, these lists are HUGE. I want to aggregate the prefixes as much as possible to create a smaller routemap. So right now it looks like: ... 105.170.72.0/24 brs 105.170.73.0/24 brs 105.170.74.0/24 brs 105.170.75.0/24 brs 105.170.76.0/24 brs 105.170.77.0/24 brs 105.170.78.0/24 brs 105.170.79.0/24 brs 105.170.80.0/24 brs 105.170.81.0/24 brs 105.170.82.0/24 brs 105.170.83.0/24 brs 105.170.84.0/24 brs … and so on. Obviously, 105.170.72.0/24 thru 105.170.79.0/24 can be aggregated to 105.170.72.0/21 and so on. I normally use Perl, does anyone now if there is a perl module that will automatically do this prefix aggregation? I tried to write my code to do this, and its not trivial, just lookinh for a shortcurt. I did a breif glance at some CIDR related Perl cpan modules, and nothing has jumped out. Thanks John

7 8

CIDR string replacement
by Royce Williams 02 Oct '20

02 Oct '20

The recent thread on CIDR aggregation cleanup scripts reminds me that I'm looking for a similarly efficient implementation of a related tool. (I'm gearing up to write my own in Perl, but don't want to reinvent the wheel.) I'd like a fast, Unix-pipeline-ready tool that *replaces* all IPs within that range with a supplied string, using a simple config file as input, and ideally with autodetection of IP-address "word" boundaries, as in: $ cat cidr-replace.cfg 105.170.75.0/24|[Unitel] 209.112.128.0/18|[ACS] 209.165.128.0/18|[GCI] 192.0.2.0/24|[TEST-NET-1] 198.51.100.0/24|[TEST-NET-2] 203.0.113.0/24|[TEST-NET-3] $ echo "source,data1,data2,209.112.130.2,data3" | cidr-replace cidr-replace.cfg source,data1,data2,[ACS],data3 And I know this is kludgy, but it would also be useful for quick-and-dirty work if it had a flag to "append" the string using a known delimiter, as in: $ echo "source,data1,data2,209.112.130.2,data3" | cidr-replace --append ',' cidr-replace.cfg source,data1,data2,209.112.130.2,[ACS],data3 (But I'm happy to hack that last functionality into an existing script.) -- Royce

2 1

Telstra Hijack
by Ross Tajvar 02 Oct '20

02 Oct '20

I'm surprised no one else has mentioned this yet, but Telstra is hijacking a lot of prefixes: https://rpki.cloudflare.com/?view=bgp&prefix=&asn=1221&validState=Invalid Since we don't have RPKI filtering in our network (yet), we are currently filtering everything with the path ".* 4637 1221$". This is of course taking a while...

3 5

Re: CIDR cleanup
by John Kristoff 01 Oct '20

01 Oct '20

On Thu, 1 Oct 2020 13:32:53 +0000 John Von Essen <john(a)essenz.com> wrote: > I tried to write my code to do this, and its not trivial, just > lookinh for a shortcurt. I did a breif glance at some CIDR related > Perl cpan modules, and nothing has jumped out. I wrote the code below some time ago. I've not used it in awhile, but presumably it does what I think it does. I called it compactaddrs.pl. Feed it a list of CIDR blocks via stdin. John #!/usr/bin/perl -T use strict; use warnings; # compactaddrs - aggregate addr blocks use NetAddr::IP qw( Compact ); my @v4blocks; my @v6blocks; while( defined(my $line=<>) ) { chomp $line; if ( $line =~ /:/ ) { push @v6blocks, NetAddr::IP->new($line); } else { push @v4blocks, NetAddr::IP->new($line); } } if ( scalar @v4blocks > 0 ) { print "# IPv4 aggregate prefixes\n"; my @aggregates = Compact(@v4blocks); print 'WHERE'; for my $prefix (@aggregates) { print ' saddr <<= '; print "'$prefix' OR"; # print "$prefix\n"; } } if ( scalar @v6blocks > 0 ) { print " #IPv6 aggregate prefixes\n"; my @aggregates = Compact(@v6blocks); for my $prefix (@aggregates) { print "$prefix\n"; } } print "\n";

1 0

Re: Hand held copper Ethernet testers
by Rich Greenwood 01 Oct '20

01 Oct '20

On Thu, Oct 1, 2020 at 5:00 AM <nanog-request(a)nanog.org> wrote: > My old Test-Um Lanscaper died, and I was curious what people liked these > days. Don’t need throughput testing or anything like that, just basic wire > map testing, cable ID, cable length, PoE voltage, and DHCP client. > We've been happy with the Platinum Tools Net Prowler: https://www.platinumtools.com/products/testers/network-testers/net-prowler-… It does physical cable testing and ID, DHCP and basic IP testing, PoE testing, and LLDP. --Rich -- Rich Greenwood Network Engineer Shasta County Office of Education Office: 530-225-0161 Hotline: 530-225-0279

1 0

Gaming Consoles and IPv4
by Matt Hoppes 01 Oct '20

01 Oct '20

I know the solution is always “IPv6”, but I’m curious if anyone here knows why gaming consoles are so stupid when it comes to IPv4? We have VoIP and video systems that work fine through multiple layers of PAT and NAT. Why do we still have gaming consoles, in 2020, that can’t find their way through a PAT system with STUN or other methods? It seems like this should be a simple solution, why are we still opening ports or having systems that don’t work?

22 45

Re: CIDR cleanup
by Charles Cloughly 01 Oct '20

01 Oct '20

Not Perl, though this may be useful depending on your environment: https://github.com/rus-cert/compress-cidr The examples are for IPv6, though I use it to consolidate lists of IPv4 in a variety of jobs/scripts without issue. YMMV. From: NANOG on behalf of John Von Essen Sent: Thursday, October 1, 2020 6:32 AM To: NANOG Subject: CIDR cleanup Sorry if this is slightly off-topic, but I am writing some code for a custom GeoDNS routemap. My starting data set is a raw list of /24 subnets, no prefix aggregation has been done. In other words, its the entire BGP routing table in /24 prefixes - tagged by Geo region. Each region is its own txt file with a dump of /24’s. As a result, these lists are HUGE. I want to aggregate the prefixes as much as possible to create a smaller routemap. So right now it looks like: ... 105.170.72.0/24 brs 105.170.73.0/24 brs 105.170.74.0/24 brs 105.170.75.0/24 brs 105.170.76.0/24 brs 105.170.77.0/24 brs 105.170.78.0/24 brs 105.170.79.0/24 brs 105.170.80.0/24 brs 105.170.81.0/24 brs 105.170.82.0/24 brs 105.170.83.0/24 brs 105.170.84.0/24 brs … and so on. Obviously, 105.170.72.0/24 thru 105.170.79.0/24 can be aggregated to 105.170.72.0/21 and so on. I normally use Perl, does anyone now if there is a perl module that will automatically do this prefix aggregation? I tried to write my code to do this, and its not trivial, just lookinh for a shortcurt. I did a breif glance at some CIDR related Perl cpan modules, and nothing has jumped out. Thanks John

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Hand held copper Ethernet testers
by Chris Boyd 01 Oct '20

01 Oct '20

My old Test-Um Lanscaper died, and I was curious what people liked these days. Don’t need throughput testing or anything like that, just basic wire map testing, cable ID, cable length, PoE voltage, and DHCP client. What do y’all like? —Chris

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