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Contact at AT&T? -- Never mind
by Stephen Satchell 28 Nov '17

28 Nov '17

> I'm trying to resolve an issue with their network blocking Secure IMAP, port 993/TCP. Is there any contact available? Problem resolved. If anyone wants the gruesome details, ask off-list.

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Contact at AT&T?
by Stephen Satchell 28 Nov '17

28 Nov '17

I'm trying to resolve an issue with their network blocking Secure IMAP, port 993/TCP. Is there any contact available?

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ospf database size - affects that underlying transport mtu might have
by Aaron Gould 28 Nov '17

28 Nov '17

This is a *single area* ospf environment, that has been stable for years.. But now suddenly is having issues with new ospf neightbor adjacencies , which are riding a 3rd party transport network Anyone ever experienced anything strange with underlying transport network mtu possibly causing ospf neighbor adjacency to be broken ? I'm asking if the underlying 3rd party transport layer 2 network has a smaller mtu than the endpoint ospf ip interface have, could this cause those ospf neighbors to not fully establish ? .and I'm also asking this if the single ospf area has grown large enough to cause some sort of initial database packet to be larger than that underlying 3rd party mtu is providing -Aaron

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RE: ospf database size - affects that underlying transport mtu might have
by Scott Weeks 27 Nov '17

27 Nov '17

--- nanog(a)nanog.org wrote: From: Richard Vander Reyden via NANOG <nanog(a)nanog.org> > This is a *single area* ospf environment, that has been > stable for years. But now suddenly is having issues with > new ospf neightbor adjacencies , which are riding a 3rd > party transport network >> I have seen this in the lab before, was related to the >> size of the LSA. --------------------------------------------------- Wouldn't this show in some SNMP OID that can be monitored? If nothing else, fragmentation (see below). Also, how big was the LSA? It should be able to be pretty big. According to: https://supportforums.cisco.com/t5/service-providers-documents/ospf-and-mtu… "RFC 2328 (OSPF version 2 specification) says...If necessary, the length of OSPF packets can be up to 65,535 bytes (including the IP header). The OSPF packet types that are likely to be large (Database Description Packets, Link State Request, Link State Update, and Link State Acknowledgment packets) can usually be split into several separate protocol packets, without loss of functionality. This is recommended; IP fragmentation should be avoided whenever possible." scott

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Wireless ISPs during disasters (hurricane harvey, irma and maria)
by Sean Donelan 27 Nov '17

27 Nov '17

While some of the big companies like Facebook, Google and Microsoft got some press about their wireless experiments during the post-hurricane recovery, the FCC hasn't heard about the experience of wireless ISPs during the recovery. Were there any wireless ISPs in south-Texas, south-Florida, Puerto Rico or U.S. Virigin Islands? How did they survive, or able to speed recovery efforts? Were there resources they needed? WISPs don't normally report in the FCC DIRS or NORS disaster reporting systems, so WISPs are a blank spot.

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Definition of ISP vs Transit provider
by Jean-Francois Mezei 27 Nov '17

27 Nov '17

The FCC is about to reclassify "Broadband Internet Access Service" as an information service instead of Telecommunications Service. This prombpted the following question which isn't about the FCC action per say. This is about how does one define Transit provider vs ISP ? Cogent for instance acts as a transit provider to other networks but also sells connectivity to companies. Peer1 in Canada used to sell "transit" to a then small emerging ISP, but as its sole transit provider, provided the BGP management as well as peering at Torix. Is the service to the ISP still called "transit" ? Or would ISP be defined as the organsation which assigns IPs to end users via PPPoE of DHCP ? One could argue that a network which assigns 4 or less IPs per customer would be an ISP. But what about IPv6 where the ISP could give each end user a /64 ? Just curious to see if there are agreed upon definitions from the network operators's point of view. I note that large companies tend to do everything from transit, to residential ISP, business ISP, libraries, airports etc. For Bell Canada, it is almost all under AS577. So separating what is telecom and what is information becomes more "interesting". As a point of reference this is what I *think* the FCC defines as an ISP: ## 23. Broadband Internet access service also does not include virtual private network (VPN) services, content delivery networks (CDNs), hosting or data storage services, or Internet backbone services (if those services are separate from broadband Internet access service), consistent with past Commission precedent.69 The Commission has historically distinguished these services from “mass market” services, as they do not provide the capability to transmit data to and receive data from all or substantially all Internet endpoints.70 We do not disturb that finding here. 24. Finally, we observe that to the extent that coffee shops, bookstores, airlines, private end- user networks such as libraries and universities, and other businesses acquire broadband Internet access service from a broadband provider to enable patrons to access the Internet from their respective establishments, provision of such service by the premise operator would not itself be considered a broadband Internet access service unless it was offered to patrons as a retail mass market service, as we define it here.71 Likewise, when a user employs, for example, a wireless router or a Wi-Fi hotspot to create a personal Wi-Fi network that is not intentionally offered for the benefit of others, he or she is not offering a broadband Internet access service, under our definition, because the user is not marketing and selling such service to residential customers, small business, and other end-user customers such as schools and libraries. ## The full 210 proposed FCC decision is at: https://apps.fcc.gov/edocs_public/attachmatch/DOC-347927A1.pdf

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Weekly Routing Table Report
by cscora＠apnic.net 24 Nov '17

24 Nov '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, CaribNOG TZNOG, 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 25 Nov, 2017 Report Website: http://thyme.rand.apnic.net Detailed Analysis: http://thyme.rand.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 671033 Prefixes after maximum aggregation (per Origin AS): 261644 Deaggregation factor: 2.56 Unique aggregates announced (without unneeded subnets): 324996 Total ASes present in the Internet Routing Table: 59154 Prefixes per ASN: 11.34 Origin-only ASes present in the Internet Routing Table: 51075 Origin ASes announcing only one prefix: 22520 Transit ASes present in the Internet Routing Table: 8079 Transit-only ASes present in the Internet Routing Table: 236 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 34 Max AS path prepend of ASN ( 55644) 31 Prefixes from unregistered ASNs in the Routing Table: 93 Number of instances of unregistered ASNs: 93 Number of 32-bit ASNs allocated by the RIRs: 20684 Number of 32-bit ASNs visible in the Routing Table: 16548 Prefixes from 32-bit ASNs in the Routing Table: 67751 Number of bogon 32-bit ASNs visible in the Routing Table: 12 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 361 Number of addresses announced to Internet: 2860612768 Equivalent to 170 /8s, 129 /16s and 124 /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: 98.7 Total number of prefixes smaller than registry allocations: 222029 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 184121 Total APNIC prefixes after maximum aggregation: 52958 APNIC Deaggregation factor: 3.48 Prefixes being announced from the APNIC address blocks: 183299 Unique aggregates announced from the APNIC address blocks: 76534 APNIC Region origin ASes present in the Internet Routing Table: 8500 APNIC Prefixes per ASN: 21.56 APNIC Region origin ASes announcing only one prefix: 2392 APNIC Region transit ASes present in the Internet Routing Table: 1230 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 34 Number of APNIC region 32-bit ASNs visible in the Routing Table: 3364 Number of APNIC addresses announced to Internet: 766844704 Equivalent to 45 /8s, 181 /16s and 31 /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: 201230 Total ARIN prefixes after maximum aggregation: 96918 ARIN Deaggregation factor: 2.08 Prefixes being announced from the ARIN address blocks: 202591 Unique aggregates announced from the ARIN address blocks: 94796 ARIN Region origin ASes present in the Internet Routing Table: 18033 ARIN Prefixes per ASN: 11.23 ARIN Region origin ASes announcing only one prefix: 6687 ARIN Region transit ASes present in the Internet Routing Table: 1780 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: 2268 Number of ARIN addresses announced to Internet: 1112570912 Equivalent to 66 /8s, 80 /16s and 124 /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: 181159 Total RIPE prefixes after maximum aggregation: 88503 RIPE Deaggregation factor: 2.05 Prefixes being announced from the RIPE address blocks: 177056 Unique aggregates announced from the RIPE address blocks: 106800 RIPE Region origin ASes present in the Internet Routing Table: 24646 RIPE Prefixes per ASN: 7.18 RIPE Region origin ASes announcing only one prefix: 11258 RIPE Region transit ASes present in the Internet Routing Table: 3503 Average RIPE Region AS path length visible: 4.5 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 6415 Number of RIPE addresses announced to Internet: 713358720 Equivalent to 42 /8s, 132 /16s and 253 /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: 86384 Total LACNIC prefixes after maximum aggregation: 19288 LACNIC Deaggregation factor: 4.48 Prefixes being announced from the LACNIC address blocks: 87654 Unique aggregates announced from the LACNIC address blocks: 39340 LACNIC Region origin ASes present in the Internet Routing Table: 6608 LACNIC Prefixes per ASN: 13.26 LACNIC Region origin ASes announcing only one prefix: 1824 LACNIC Region transit ASes present in the Internet Routing Table: 1224 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 29 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 4128 Number of LACNIC addresses announced to Internet: 172452320 Equivalent to 10 /8s, 71 /16s and 105 /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: 18044 Total AfriNIC prefixes after maximum aggregation: 3909 AfriNIC Deaggregation factor: 4.62 Prefixes being announced from the AfriNIC address blocks: 20072 Unique aggregates announced from the AfriNIC address blocks: 7236 AfriNIC Region origin ASes present in the Internet Routing Table: 1100 AfriNIC Prefixes per ASN: 18.25 AfriNIC Region origin ASes announcing only one prefix: 358 AfriNIC Region transit ASes present in the Internet Routing Table: 218 Average AfriNIC Region AS path length visible: 4.6 Max AfriNIC Region AS path length visible: 21 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 373 Number of AfriNIC addresses announced to Internet: 94937856 Equivalent to 5 /8s, 168 /16s and 163 /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 5279 4192 76 ERX-CERNET-BKB China Education and Rese 7545 4062 410 408 TPG-INTERNET-AP TPG Telecom Limited, AU 4766 2789 11128 758 KIXS-AS-KR Korea Telecom, KR 17974 2777 916 76 TELKOMNET-AS2-AP PT Telekomunikasi Indo 9829 2759 1499 540 BSNL-NIB National Internet Backbone, IN 45899 2369 1505 156 VNPT-AS-VN VNPT Corp, VN 7552 2296 1158 60 VIETEL-AS-AP Viettel Group, VN 9394 2169 4931 26 CTTNET China TieTong Telecommunications 4755 2083 422 212 TATACOMM-AS TATA Communications formerl 9808 2068 8699 32 CMNET-GD Guangdong Mobile Communication 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 3348 1323 87 SHAW - Shaw Communications Inc., CA 22773 3308 2952 154 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 18566 2171 405 107 MEGAPATH5-US - MegaPath Corporation, US 20115 2054 2288 444 CHARTER-NET-HKY-NC - Charter Communicat 6389 2013 3671 39 BELLSOUTH-NET-BLK - BellSouth.net Inc., 16509 1943 4076 585 AMAZON-02 - Amazon.com, Inc., US 209 1929 5062 645 CENTURYLINK-US-LEGACY-QWEST - Qwest Com 30036 1855 331 259 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom 11492 1674 235 575 CABLEONE - CABLE ONE, INC., US 701 1547 10589 625 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 3519 186 23 ALJAWWALSTC-AS, SA 20940 2849 851 2056 AKAMAI-ASN1, US 8551 2489 378 42 BEZEQ-INTERNATIONAL-AS Bezeqint Interne 34984 2064 330 426 TELLCOM-AS, TR 12389 2012 1736 737 ROSTELECOM-AS, RU 12479 1917 1066 102 UNI2-AS, ES 9121 1853 1691 17 TTNET, TR 13188 1604 100 52 TRIOLAN, UA 6849 1227 355 21 UKRTELNET, UA 8402 1226 544 14 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 3553 538 297 Telmex Colombia S.A., CO 8151 3446 3425 581 Uninet S.A. de C.V., MX 11830 2645 370 66 Instituto Costarricense de Electricidad 6503 1622 437 53 Axtel, S.A.B. de C.V., MX 7303 1495 1021 196 Telecom Argentina S.A., AR 6147 1220 377 27 Telefonica del Peru S.A.A., PE 3816 1034 512 103 COLOMBIA TELECOMUNICACIONES S.A. ESP, C 28573 999 2258 193 CLARO S.A., BR 11172 914 126 86 Alestra, S. de R.L. de C.V., MX 18881 903 1063 28 TELEFÔNICA BRASIL S.A, BR 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 1210 398 48 LINKdotNET-AS, EG 37611 802 91 8 Afrihost, ZA 36903 736 370 138 MT-MPLS, MA 36992 678 1383 31 ETISALAT-MISR, EG 8452 524 1730 17 TE-AS TE-AS, EG 24835 515 850 15 RAYA-AS, EG 29571 431 36 10 CITelecom-AS, CI 37492 425 367 77 ORANGE-, TN 37342 355 32 1 MOVITEL, MZ 15399 349 35 7 WANANCHI-, KE 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 5279 4192 76 ERX-CERNET-BKB China Education and Rese 7545 4062 410 408 TPG-INTERNET-AP TPG Telecom Limited, AU 10620 3553 538 297 Telmex Colombia S.A., CO 39891 3519 186 23 ALJAWWALSTC-AS, SA 8151 3446 3425 581 Uninet S.A. de C.V., MX 6327 3348 1323 87 SHAW - Shaw Communications Inc., CA 22773 3308 2952 154 ASN-CXA-ALL-CCI-22773-RDC - Cox Communi 20940 2849 851 2056 AKAMAI-ASN1, US 4766 2789 11128 758 KIXS-AS-KR Korea Telecom, KR 17974 2777 916 76 TELKOMNET-AS2-AP PT Telekomunikasi Indo 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 4062 3654 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 3519 3496 ALJAWWALSTC-AS, SA 6327 3348 3261 SHAW - Shaw Communications Inc., CA 10620 3553 3256 Telmex Colombia S.A., CO 22773 3308 3154 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 8151 3446 2865 Uninet S.A. de C.V., MX 17974 2777 2701 TELKOMNET-AS2-AP PT Telekomunikasi Indonesia, I 11830 2645 2579 Instituto Costarricense de Electricidad y Telec 8551 2489 2447 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 7552 2296 2236 VIETEL-AS-AP Viettel Group, VN Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Network Transit AS Description 65501 PRIVATE 5.141.112.0/22 6828 USI, RU 65602 UNALLOCATED 8.225.192.0/24 30372 SUNESYS2 - Sunesys, LLC, US 64710 PRIVATE 39.134.26.0/23 56042 CMNET-SHANXI-AP China Mobile c 64710 PRIVATE 39.134.28.0/23 56042 CMNET-SHANXI-AP China Mobile c 64710 PRIVATE 39.134.30.0/24 56042 CMNET-SHANXI-AP China Mobile c 64710 PRIVATE 39.134.31.0/24 56042 CMNET-SHANXI-AP China Mobile c 64710 PRIVATE 39.137.20.0/23 56042 CMNET-SHANXI-AP China Mobile c 64710 PRIVATE 39.137.22.0/24 56042 CMNET-SHANXI-AP China Mobile c 65001 PRIVATE 46.237.40.0/21 13118 ASN-YARTELECOM PJSC Rostelecom 64513 PRIVATE 62.150.101.0/24 9155 QNET Kuwait, KW Complete listing at http://thyme.rand.apnic.net/current/data-badAS Advertised Unallocated Addresses -------------------------------- Network Origin AS Description 14.128.12.0/22 55427 BROADLINK-AS-AP Broadlink Nepal, NP 14.128.14.0/23 10247 NETLINE, ZA 14.192.50.0/23 10247 NETLINE, ZA 14.192.58.0/23 10247 NETLINE, ZA 27.100.7.0/24 56096 UNKNOWN 36.255.250.0/23 10247 NETLINE, ZA 41.78.180.0/23 37265 -Reserved AS-, ZZ 43.228.144.0/22 9829 BSNL-NIB National Internet Backbone, IN 43.251.20.0/22 9381 WTT-AS-AP WTT HK Limited, HK 43.251.84.0/22 133676 PNPL-AS Precious netcom pvt ltd, 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 /12:285 /13:550 /14:1060 /15:1856 /16:13336 /17:7754 /18:13617 /19:25184 /20:38959 /21:43744 /22:81587 /23:66378 /24:374339 /25:840 /26:622 /27:652 /28:35 /29:21 /30:15 /31:2 /32:27 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 6327 3141 3348 SHAW - Shaw Communications Inc., CA 39891 2946 3519 ALJAWWALSTC-AS, SA 22773 2544 3308 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 18566 2066 2171 MEGAPATH5-US - MegaPath Corporation, US 11830 1989 2645 Instituto Costarricense de Electricidad y Telec 8551 1953 2489 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo 30036 1622 1855 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi 10620 1544 3553 Telmex Colombia S.A., CO 11492 1493 1674 CABLEONE - CABLE ONE, INC., US 34984 1371 2064 TELLCOM-AS, TR Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1565 2:816 4:18 5:2598 6:38 8:1079 9:1 12:1853 13:181 14:1741 15:29 16:3 17:184 18:76 20:52 21:1 23:2407 24:1938 25:2 27:2367 31:1957 32:87 35:21 36:455 37:2431 38:1439 39:87 40:100 41:3048 42:519 43:1895 44:82 45:3307 46:2835 47:183 49:1369 50:1040 51:34 52:903 54:354 55:5 56:4 57:42 58:1573 59:994 60:367 61:1986 62:1776 63:1838 64:4596 65:2242 66:4488 67:2299 68:1193 69:3173 70:1131 71:588 72:2098 74:2681 75:389 76:415 77:1527 78:1569 79:1886 80:1442 81:1411 82:1036 83:753 84:1000 85:1960 86:481 87:1230 88:887 89:2298 90:174 91:6244 92:1029 93:2345 94:2410 95:2675 96:667 97:351 98:963 99:103 100:154 101:1482 102:1 103:16186 104:3185 105:208 106:566 107:1774 108:815 109:2942 110:1505 111:1732 112:1270 113:1353 114:1074 115:1599 116:1705 117:1642 118:2159 119:1650 120:713 121:1073 122:2408 123:1901 124:1482 125:1824 128:934 129:680 130:445 131:1544 132:600 133:193 134:895 135:227 136:442 137:464 138:1961 139:539 140:381 141:677 142:753 143:913 144:801 145:190 146:1136 147:694 148:1562 149:622 150:708 151:1003 152:729 153:302 154:952 155:740 156:731 157:752 158:599 159:1607 160:814 161:734 162:2534 163:529 164:931 165:1471 166:392 167:1349 168:3103 169:821 170:3541 171:399 172:1011 173:1893 174:826 175:774 176:1895 177:3989 178:2497 179:1160 180:2243 181:2106 182:2422 183:807 184:887 185:11535 186:3299 187:2276 188:2593 189:1894 190:8190 191:1322 192:9715 193:5862 194:4762 195:3979 196:2247 197:1423 198:5548 199:5876 200:7206 201:4867 202:10401 203:9959 204:4569 205:2871 206:3072 207:3096 208:3984 209:3879 210:3939 211:2051 212:2886 213:2586 214:850 215:65 216:5711 217:2096 218:871 219:602 220:1678 221:938 222:718 223:1202 End of report

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Broadcast television in an IP world
by Thomas Edwards 24 Nov '17

24 Nov '17

Of potential interest to NANOG members, a key element of the new digital TV OTA standard, ATSC 3.0 (besides improved efficiency/flexibility of modulation, 4K, HEVC video coding, AC-4 immersive audio, high dynamic range/wide color gamut), is the expectation that it will be typically be viewed on an Internet connected TV, thus allowing for a composition of OTA content with interactive & personalized Internet-delivered services. This hybrid OTA/OTT concept has already been trialed in parts of Europe using the “HbbTV” (hybrid broadband-broadcast TV) standard. This URL describes some of the potential capabilities of ATSC 3.0 in this area: https://nabpilot.org/next-generation-tv-home-gateway/ ATSC 3.0 will be deployed early next year in Phoenix, AZ as a test market, with 10 stations participating, including affiliates of the four largest TV networks. At the same time, many live local television station broadcasts are already available via OTT. This can be done either directly by a network & affiliates, such as CBS All Access, or through a distributor (which we call a Digital MVPD or “DMVPD”) which now include Sling TV, Playstation Vue, DirecTV Now, YouTube TV, Hulu with Live TV, and Fubo TV. To aid in achieving the scale required for mass OTT, I’d like to point out two efforts by the Streaming Video Alliance. The first is the Open Caching initiative. As you may know, some large OTT content distributors have offered to deploy content caches in end-user ISPs (such as Google Global Cache or Netflix Open Connect), but to date they have been proprietary to that distributor. Open Caching from the SVA establishes the basic architectural guidelines for implementation of a non-proprietary, open caching system: https://www.streamingvideoalliance.org/technical-work/working-groups/open-c… Another effort is Multicast ABR. This is generally imagined as the use of multicast within an end-user ISP. There was recently a PoC to demonstrate live 4K streaming using the CableLabs Multicast ABR architecture based on RFC 5740 NORM (NACK-Oriented Reliable Multicast). This utilizes the home gateway to receive the live multicast stream, and “convert” the stream to unicast HTTP for last-foot delivery. https://www.streamingvideoalliance.org/2017/07/31/multicast-abr-poc/ https://apps.cablelabs.com/specification/ip-multicast-adaptive-bit-rate-arc… -Thomas -- Thomas Edwards FOX Networks Engineering & Operations VP Engineering & Development thomas.edwards(a)fox.com 10201 W Pico Blvd Los Angeles, CA 90035

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RE: Definition of ISP vs Transit provider
by Scott Weeks 23 Nov '17

23 Nov '17

--- Jacques.Latour(a)cira.ca wrote: From: Jacques Latour <Jacques.Latour(a)cira.ca> ISP: Anybody offering services over the internet, including Transit Providers. Transit Provider: An internet service "transit" where the whole Internet can reach your advertised network addresses. --------------------------------------- I deleted the smiley face, so that may have more to do with this than I expect, but the above won't work. At home I have 2 upstreams, the whole internet can reach my advertised addresses and I provide 'transit' for my neighbor via an RF signal. Which one am I? I'll add a :-) too... scott

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Re: Definition of ISP vs Transit provider
by Scott Weeks 22 Nov '17

22 Nov '17

--- jfmezei_nanog(a)vaxination.ca wrote: From: Jean-Francois Mezei <jfmezei_nanog(a)vaxination.ca> This is about how does one define Transit provider vs ISP ? Just curious to see if there are agreed upon definitions from the network operators's point of view. -------------------------------------- Different parts of the same company? ;-) Maybe transit is transit *only* and no individual end users. Their end users are networks with business networks attached only. But, then individual end users have business networks in their home, too. So, blurry at best. scott

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