September 2017 - Test - lists.nanog.org

AS PATH limits
by craig washington 22 Sep '17

22 Sep '17

Hello world. I was wondering and forgive me if this discussions has already taken place. How many AS PATHS are too many? Meaning how do we determine how many to filter on transit links or public peering links? Thanks in advance

6 6

Weekly Routing Table Report
by cscora＠apnic.net 22 Sep '17

22 Sep '17

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG MENOG, BJNOG, SDNOG, CMNOG, LACNOG, IRNOG and the RIPE Routing WG. Daily listings are sent to bgp-stats(a)lists.apnic.net For historical data, please see http://thyme.rand.apnic.net. If you have any comments please contact Philip Smith <pfsinoz(a)gmail.com>. Routing Table Report 04:00 +10GMT Sat 23 Sep, 2017 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 665219 Prefixes after maximum aggregation (per Origin AS): 258596 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 320766 Total ASes present in the Internet Routing Table: 58466 Prefixes per ASN: 11.38 Origin-only ASes present in the Internet Routing Table: 50520 Origin ASes announcing only one prefix: 22262 Transit ASes present in the Internet Routing Table: 7946 Transit-only ASes present in the Internet Routing Table: 230 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 33 Max AS path prepend of ASN ( 8591) 26 Prefixes from unregistered ASNs in the Routing Table: 94 Number of instances of unregistered ASNs: 95 Number of 32-bit ASNs allocated by the RIRs: 20036 Number of 32-bit ASNs visible in the Routing Table: 15872 Prefixes from 32-bit ASNs in the Routing Table: 64954 Number of bogon 32-bit ASNs visible in the Routing Table: 23 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 368 Number of addresses announced to Internet: 2853913952 Equivalent to 170 /8s, 27 /16s and 69 /24s Percentage of available address space announced: 77.1 Percentage of allocated address space announced: 77.1 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 98.7 Total number of prefixes smaller than registry allocations: 220782 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 183318 Total APNIC prefixes after maximum aggregation: 52306 APNIC Deaggregation factor: 3.50 Prefixes being announced from the APNIC address blocks: 182289 Unique aggregates announced from the APNIC address blocks: 75028 APNIC Region origin ASes present in the Internet Routing Table: 8345 APNIC Prefixes per ASN: 21.84 APNIC Region origin ASes announcing only one prefix: 2312 APNIC Region transit ASes present in the Internet Routing Table: 1199 Average APNIC Region AS path length visible: 4.3 Max APNIC Region AS path length visible: 32 Number of APNIC region 32-bit ASNs visible in the Routing Table: 3202 Number of APNIC addresses announced to Internet: 765521632 Equivalent to 45 /8s, 160 /16s and 238 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-137529 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 200202 Total ARIN prefixes after maximum aggregation: 96002 ARIN Deaggregation factor: 2.09 Prefixes being announced from the ARIN address blocks: 201865 Unique aggregates announced from the ARIN address blocks: 93864 ARIN Region origin ASes present in the Internet Routing Table: 17957 ARIN Prefixes per ASN: 11.24 ARIN Region origin ASes announcing only one prefix: 6624 ARIN Region transit ASes present in the Internet Routing Table: 1765 Average ARIN Region AS path length visible: 3.8 Max ARIN Region AS path length visible: 23 Number of ARIN region 32-bit ASNs visible in the Routing Table: 2197 Number of ARIN addresses announced to Internet: 1109873952 Equivalent to 66 /8s, 39 /16s and 85 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-397212 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 177675 Total RIPE prefixes after maximum aggregation: 86849 RIPE Deaggregation factor: 2.05 Prefixes being announced from the RIPE address blocks: 173627 Unique aggregates announced from the RIPE address blocks: 104715 RIPE Region origin ASes present in the Internet Routing Table: 24420 RIPE Prefixes per ASN: 7.11 RIPE Region origin ASes announcing only one prefix: 11206 RIPE Region transit ASes present in the Internet Routing Table: 3475 Average RIPE Region AS path length visible: 4.3 Max RIPE Region AS path length visible: 32 Number of RIPE region 32-bit ASNs visible in the Routing Table: 6202 Number of RIPE addresses announced to Internet: 713228160 Equivalent to 42 /8s, 130 /16s and 255 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-207259 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 86491 Total LACNIC prefixes after maximum aggregation: 19501 LACNIC Deaggregation factor: 4.44 Prefixes being announced from the LACNIC address blocks: 87740 Unique aggregates announced from the LACNIC address blocks: 39785 LACNIC Region origin ASes present in the Internet Routing Table: 6406 LACNIC Prefixes per ASN: 13.70 LACNIC Region origin ASes announcing only one prefix: 1776 LACNIC Region transit ASes present in the Internet Routing Table: 1179 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 33 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 3925 Number of LACNIC addresses announced to Internet: 171368928 Equivalent to 10 /8s, 54 /16s and 225 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-268700 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 17437 Total AfriNIC prefixes after maximum aggregation: 3862 AfriNIC Deaggregation factor: 4.52 Prefixes being announced from the AfriNIC address blocks: 19330 Unique aggregates announced from the AfriNIC address blocks: 7080 AfriNIC Region origin ASes present in the Internet Routing Table: 1072 AfriNIC Prefixes per ASN: 18.03 AfriNIC Region origin ASes announcing only one prefix: 343 AfriNIC Region transit ASes present in the Internet Routing Table: 211 Average AfriNIC Region AS path length visible: 4.7 Max AfriNIC Region AS path length visible: 21 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 346 Number of AfriNIC addresses announced to Internet: 93461760 Equivalent to 5 /8s, 146 /16s and 29 /24s AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4538 5296 4194 88 ERX-CERNET-BKB China Education and Rese 7545 3845 406 387 TPG-INTERNET-AP TPG Telecom Limited, AU 17974 2934 901 71 TELKOMNET-AS2-AP PT Telekomunikasi Indo 4766 2827 11126 753 KIXS-AS-KR Korea Telecom, KR 9829 2744 1499 540 BSNL-NIB National Internet Backbone, IN 9808 2389 8699 32 CMNET-GD Guangdong Mobile Communication 45899 2259 1472 114 VNPT-AS-VN VNPT Corp, VN 9394 2174 4931 27 CTTNET China TieTong Telecommunications 4755 2104 422 221 TATACOMM-AS TATA Communications formerl 4134 1745 28203 462 CHINANET-BACKBONE No.31,Jin-rong Street Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6327 3438 1341 88 SHAW - Shaw Communications Inc., CA 22773 3317 2952 157 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 18566 2209 405 108 MEGAPATH5-US - MegaPath Corporation, US 6389 2044 3671 39 BELLSOUTH-NET-BLK - BellSouth.net Inc., 20115 2040 2250 429 CHARTER-NET-HKY-NC - Charter Communicat 209 1914 5067 645 CENTURYLINK-US-LEGACY-QWEST - Qwest Com 16509 1859 3964 553 AMAZON-02 - Amazon.com, Inc., US 30036 1842 330 257 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom 6983 1687 854 229 ITCDELTA - Earthlink, Inc., US 701 1678 10589 626 UUNET - MCI Communications Services, In Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 39891 3387 186 23 ALJAWWALSTC-AS, SA 20940 2911 912 2085 AKAMAI-ASN1, US 8551 2457 377 41 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 34984 2049 330 429 TELLCOM-AS, TR 9121 1927 1691 17 TTNET, TR 12389 1756 1644 677 ROSTELECOM-AS, RU 12479 1708 1052 63 UNI2-AS, ES 13188 1604 100 52 TRIOLAN, UA 6849 1225 355 21 UKRTELNET, UA 8402 1202 544 15 CORBINA-AS OJSC "Vimpelcom", RU Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 10620 3567 542 229 Telmex Colombia S.A., CO 8151 3200 3468 584 Uninet S.A. de C.V., MX 11830 2099 370 65 Instituto Costarricense de Electricidad 6503 1565 437 53 Axtel, S.A.B. de C.V., MX 10481 1563 351 525 Prima S.A., AR 7303 1557 1023 241 Telecom Argentina S.A., AR 6147 1277 377 27 Telefonica del Peru S.A.A., PE 3816 1033 510 92 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 28573 965 2285 181 CLARO S.A., BR 11172 913 126 85 Alestra, S. de R.L. de C.V., MX 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 1203 398 48 LINKdotNET-AS, EG 37611 766 91 8 Afrihost, ZA 36903 708 356 136 MT-MPLS, MA 36992 662 1383 31 ETISALAT-MISR, EG 24835 515 850 15 RAYA-AS, EG 29571 422 36 10 CITelecom-AS, CI 37492 415 354 77 ORANGE-, TN 8452 357 1730 17 TE-AS TE-AS, EG 15399 357 35 7 WANANCHI-, KE 23889 306 103 14 MauritiusTelecom, MU Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 4538 5296 4194 88 ERX-CERNET-BKB China Education and Rese 7545 3845 406 387 TPG-INTERNET-AP TPG Telecom Limited, AU 10620 3567 542 229 Telmex Colombia S.A., CO 6327 3438 1341 88 SHAW - Shaw Communications Inc., CA 39891 3387 186 23 ALJAWWALSTC-AS, SA 22773 3317 2952 157 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 8151 3200 3468 584 Uninet S.A. de C.V., MX 17974 2934 901 71 TELKOMNET-AS2-AP PT Telekomunikasi Indo 20940 2911 912 2085 AKAMAI-ASN1, US 4766 2827 11126 753 KIXS-AS-KR Korea Telecom, KR Complete listing at http://thyme.rand.apnic.net/current/data-ASnet Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 7545 3845 3458 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 3387 3364 ALJAWWALSTC-AS, SA 6327 3438 3350 SHAW - Shaw Communications Inc., CA 10620 3567 3338 Telmex Colombia S.A., CO 22773 3317 3160 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 17974 2934 2863 TELKOMNET-AS2-AP PT Telekomunikasi Indonesia, I 8151 3200 2616 Uninet S.A. de C.V., MX 8551 2457 2416 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 9808 2389 2357 CMNET-GD Guangdong Mobile Communication Co.Ltd. 9829 2744 2204 BSNL-NIB National Internet Backbone, IN Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 65602 UNALLOCATED 8.225.192.0/24 30372 SUNESYS2 - Sunesys, LLC, US 64525 PRIVATE 45.119.143.0/24 133275 GIGANTIC-AS Gigantic Infotel P 64525 PRIVATE 45.125.62.0/24 133275 GIGANTIC-AS Gigantic Infotel P 65530 PRIVATE 45.249.40.0/24 133720 SOFTCALLCOC-AS SOFT CALL CUST- 65010 PRIVATE 46.56.192.0/19 42772 VELCOM-AS, BY 65010 PRIVATE 46.56.224.0/19 42772 VELCOM-AS, BY 65001 PRIVATE 46.237.40.0/21 13118 ASN-YARTELECOM PJSC Rostelecom 65534 PRIVATE 58.68.109.0/24 10201 DWL-AS-IN Dishnet Wireless Lim 64513 PRIVATE 62.150.101.0/24 9155 QNET Kuwait, KW 290012147 UNALLOCATED 63.65.43.0/24 7046 RFC2270-UUNET-CUSTOMER - MCI C Complete listing at http://thyme.rand.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 14.192.48.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 14.192.49.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 14.192.50.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 14.192.51.0/24 134833 LIHGL-HK LANLIAN INTERNATIONAL HOLDING GROUP LIMITE 23.128.126.0/23 62878 XLITT - Xlitt, US 27.100.7.0/24 56096 UNKNOWN 41.78.12.0/23 62878 XLITT - Xlitt, US 41.78.180.0/23 37265 -Reserved AS-, ZZ 41.242.132.0/23 62878 XLITT - Xlitt, US 43.228.144.0/22 9829 BSNL-NIB National Internet Backbone, IN Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:15 /9:13 /10:36 /11:106 /12:283 /13:551 /14:1048 /15:1868 /16:13425 /17:7771 /18:13648 /19:25304 /20:39242 /21:42715 /22:80092 /23:65224 /24:371401 /25:854 /26:635 /27:668 /28:37 /29:38 /30:216 /31:2 /32:27 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6327 3234 3438 SHAW - Shaw Communications Inc., CA 39891 2946 3387 ALJAWWALSTC-AS, SA 22773 2528 3317 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 18566 2094 2209 MEGAPATH5-US - MegaPath Corporation, US 8551 1922 2457 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 30036 1620 1842 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi 10620 1520 3567 Telmex Colombia S.A., CO 11830 1489 2099 Instituto Costarricense de Electricidad y Telec 11492 1422 1601 CABLEONE - CABLE ONE, INC., US 9121 1373 1927 TTNET, TR Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1560 2:834 4:18 5:2452 6:31 7:1 8:1073 12:1856 13:159 14:1682 15:28 16:2 17:169 18:76 20:60 23:2458 24:1608 25:2 27:2370 29:1 31:1920 32:89 33:19 35:21 36:405 37:2361 38:1378 39:69 40:98 41:3036 42:492 43:1946 44:79 45:3089 46:2816 47:171 49:1248 50:1010 51:19 52:826 54:368 55:1 56:4 57:44 58:1571 59:981 60:327 61:2013 62:1721 63:1906 64:4647 65:2210 66:4535 67:2256 68:1189 69:3353 70:1160 71:608 72:2140 74:2643 75:401 76:426 77:1484 78:1543 79:1895 80:1417 81:1411 82:1014 83:724 84:970 85:1878 86:467 87:1201 88:813 89:2228 90:171 91:6243 92:1030 93:2347 94:2379 95:2722 96:637 97:353 98:961 99:95 100:153 101:1440 102:1 103:15882 104:3046 105:189 106:544 107:1758 108:827 109:2917 110:1479 111:1751 112:1278 113:1332 114:1069 115:1551 116:1689 117:1757 118:2148 119:1638 120:725 121:1072 122:2426 123:1869 124:1502 125:1801 128:909 129:677 130:442 131:1484 132:600 133:194 134:704 135:225 136:305 137:468 138:1953 139:520 140:380 141:668 142:747 143:907 144:796 145:184 146:1104 147:701 148:1467 149:584 150:702 151:985 152:753 153:302 154:903 155:756 156:683 157:714 158:485 159:1558 160:749 161:748 162:2505 163:506 164:976 165:1429 166:382 167:1295 168:3034 169:845 170:3538 171:382 172:1017 173:2010 174:789 175:776 176:1856 177:3962 178:2540 179:1124 180:2202 181:2502 182:2441 183:770 184:874 185:10781 186:3427 187:2175 188:2591 189:1841 190:8850 191:1366 192:9651 193:5810 194:4740 195:3935 196:2131 197:1308 198:5529 199:5854 200:7625 201:4526 202:10375 203:9925 204:4516 205:2843 206:3008 207:3148 208:3954 209:4033 210:3945 211:2084 212:2877 213:2538 214:845 215:66 216:5880 217:2132 218:955 219:587 220:1676 221:930 222:761 223:1208 End of report

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pd table vs 6296
by Randy Bush 22 Sep '17

22 Sep '17

say i want to use pd to a fairly large aggregation. the router has to hold the pd table. it sees some routers have limited table size, e.g. 1k. so what's a poor boy to do? the classic ipv4 solution would be 6296 <the horror!>. are folk doing pd scaling? how? randy

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Vodafone Global Carrier Services: Contact to Abuse/Fraud Department?
by Benoit Panizzon 22 Sep '17

22 Sep '17

Hello I'm trying to reach somebody from Vodafone Global Carrier Services, regarding abusive calls originating from their network (probably transit from some other TSP). Their IC team do not consider them self in charge of abuse cases. The Vodafone UK fraud teams declares itself only responsible if I am a Vodafone end customer. If somebody has a contact or works @ Vodafone Global Carrier Services, could you please contact me off list? Kind regards -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

1 0

Puerto Rico just lost internet?
by Javier J 22 Sep '17

22 Sep '17

Any info would help.

7 13

Hughesnet IPv6
by Patrick Shoemaker 21 Sep '17

21 Sep '17

Are there any HughesNet network engineers on here who could either contact me off list to answer some questions about the IPv6 implementation on the Gen5 platform? Standard support mechanisms are not very useful here. Thanks, Patrick Shoemaker

1 0

Bell Canada (AS 577) and NTT (AS 2914) routing
by Scott Larson 21 Sep '17

21 Sep '17

I'm looking for a contact at Bell to look at a routing/traffic issue we've been seeing since at least 5pm PDT yesterday. One of our uplinks is via NTT and after correlating with their NOC, it appears traffic passing through that link ends up dying inside the Bell network. -- *[image: userimage]Scott Larson[image: los angeles] <https://www.google.com/maps/place/4216+Glencoe+Ave,+Marina+Del+Rey,+CA+9029…>Lead Systems Administrator[image: wdlogo] <https://www.wiredrive.com/> [image: linkedin] <https://www.linkedin.com/company/wiredrive> [image: facebook] <https://www.twitter.com/wiredrive> [image: twitter] <https://www.facebook.com/wiredrive> [image: instagram] <https://www.instagram.com/wiredrive>T 310 823 8238 <310%20823%208238%20x1106> | M 310 904 8818 <310%20904%208818>*

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RE: AS PATH limits
by Jakob Heitz (jheitz) 21 Sep '17

21 Sep '17

The consequence of keeping a route with a long AS_PATH is that it uses a little more memory. Also, if you send it on, you will add one ASN and may exceed the maximum BGP message size and not be able to send it. Even that is no reason to drop the incoming route. The consequence of dropping the route is that someone loses connectivity because you dropped it. The need for limiting AS_PATH length stemmed from this incident: https://dyn.com/blog/the-flap-heard-around-the-world/ This bug has long been fixed, so it should not happen again. However, if you want to be extra cautious, because unpatched routers may still be out there, then 200 should not drop any normal route. Just keep an eye on what you are dropping Thanks, Jakob Date: Tue, 19 Sep 2017 13:33:03 +0000 From: craig washington <craigwashington01(a)hotmail.com> To: "nanog(a)nanog.org" <nanog(a)nanog.org> Subject: AS PATH limits Message-ID: <SN1PR0701MB206268455259CC64FC0D8ED7A8600(a)SN1PR0701MB2062.namprd07.prod.outlook.com> Content-Type: text/plain; charset="iso-8859-1" Hello world. I was wondering and forgive me if this discussions has already taken place. How many AS PATHS are too many? Meaning how do we determine how many to filter on transit links or public peering links? Thanks in advance

1 0

Has Level3 done away with traceroute??
by Van Dyk, Donovan 21 Sep '17

21 Sep '17

Hello All, Recently I was troubleshooting a network event for a client of our who resides on the Level3 network. While trying to verify the path, I noticed I am no longer able to traceroute through the Level3 network. The funny thing is this is not just isolated to the /32. It appears to be that the entire 4.0.0.0/9 network is no longer able to traceroute through. Everything dies on their edge network. This appears to be isolated to traceroute. I have check this in NA and EU. My carrier contacted Level3 who pretty much stated that they can’t provide anything. I have checked multiple looking glasses and other online tools and none of them make it. Even Level3 looking glass drops the packets. Does anyone know anything about this? I’m pretty sure this is the first time we are seeing this. Random 4.0.0.0/9 address. NTT looking glass Tracing the route to 4.35.230.7 1 * ae-2.a00.snjsca04.us.bb.gin.ntt.net (129.250.3.58) 3 msec 1 msec 2 * * * 3 * * * 4 * * * 5 * * * 6 * * * TATA looking glass traceroute to 4.7.6.4 (4.7.6.4), 30 hops max, 52 byte packets 1 if-ae-14-3.tcore2.FNM-Frankfurt.as6453.net (195.219.87.89) 2.056 ms if-ae-6-2.tcore1.FR0-Frankfurt.as6453.net (195.219.50.173) 1.253 ms 1.177 ms MPLS Label=616998 CoS=0 TTL=1 S=1 2 195.219.50.50 (195.219.50.50) 1.214 ms 1.247 ms 1.535 ms 3 195.219.50.50 (195.219.50.50) 1.144 ms * 2.246 ms 4 * * * 5 * * * 6 * * * 7 * * * 8 * * * 9 * * * 10 * * * Telia looking glass traceroute to 4.7.6.4 (4.7.6.4), 30 hops max, 52 byte packets 1 if-ae-14-3.tcore2.FNM-Frankfurt.as6453.net (195.219.87.89) 2.056 ms if-ae-6-2.tcore1.FR0-Frankfurt.as6453.net (195.219.50.173) 1.253 ms 1.177 ms MPLS Label=616998 CoS=0 TTL=1 S=1 2 195.219.50.50 (195.219.50.50) 1.214 ms 1.247 ms 1.535 ms 3 195.219.50.50 (195.219.50.50) 1.144 ms * 2.246 ms 4 * * * 5 * * * 6 * * * 7 * * * 8 * * * 9 * * * 10 * * * Level3 looking glass Traceroute results from Atlanta, GA to 4.200.65.42(dialup-4.200.65.42.Dial1.LosAngeles1) 1 0.0.0.0 * * * 2 0.0.0.0 * * * 3 0.0.0.0 * * * 4 0.0.0.0 * * * 5 0.0.0.0 * * * 6 0.0.0.0 * * * 7 0.0.0.0 * * * 8 0.0.0.0 * * * 9 0.0.0.0 * * * 10 0.0.0.0 * * * 11 0.0.0.0 * * * -- Donovan Van Dyk SOC Network Engineer Fort Lauderdale, FL USA [cid:image001.png@01D332DA.F4DD00A0] The information contained in this electronic mail transmission and its attachments may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient (or an individual responsible for delivery of the message to such person), you are strictly prohibited from copying, disseminating or distributing this communication. If you have received this communication in error, please notify the sender immediately and destroy all electronic, paper or other versions.

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Re: IOS new versions and network load
by Jean-Francois Mezei 21 Sep '17

21 Sep '17

On 2017-09-17 19:37, Eduardo Schoedler wrote: > Server is an app now, any MacOS can have it running. But do carriers/ISPs really want to deal with a rack unfriendly Mac Mini or iMac at a carrier hotel? If the Server App could run on Linux, or if OS-X could boot on standard servers, perhaps, it it seems to be a very bad fit in carrier/enterprise environments. > Implementation will be a little tricky, because you need your > customers to look a record in your domain. I've tried reading some about it. The cache server app registers with Apple its existence and the IP address ranges it serves When a client wants to download new IOS version, Apple checked and finds that the client's IP is served by the caching server whose "local" IP is a.b.c.d (akaL the inside NAT IP address). Tells client to get version of software from that IP address. The DNS TXT records are used by the Caching Server to get the list of IP blocks it can serve. (not needed in the target small office environments where everyone is on same subnet and the caching server can tell the apple serves the one subnet it seves).

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