RE: L3VPN VPNv4 NLRI - Route Reflector Scaling
This is made easier by the cisco allowing regular expressions in the extcommunity list, an RT scoping policy can be implemented as a result. David Freedman Group Network Engineering Claranet Limited http://www.clara.net -Original Message- From: Mark Tinka [mailto:[EMAIL PROTECTED] Sent: Fri 4/4/2008 11:07 To: David Freedman Cc: nanog@merit.edu Subject: Re: L3VPN VPNv4 NLRI - Route Reflector Scaling On Friday 04 April 2008, David Freedman wrote: The downside to this of course is that the RRs spend time discarding prefixes when update time comes around for the PEs. And also, of course, the fact that you have to maintain the Extended communities on the route reflector(s). Cheers, Mark.
Re: L3VPN VPNv4 NLRI - Route Reflector Scaling
On Friday 04 April 2008, David Freedman wrote: The downside to this of course is that the RRs spend time discarding prefixes when update time comes around for the PEs. And also, of course, the fact that you have to maintain the Extended communities on the route reflector(s). Cheers, Mark. signature.asc Description: This is a digitally signed message part.
Re: L3VPN VPNv4 NLRI - Route Reflector Scaling
And apologies for the html of the previous two posts :)
RE: L3VPN VPNv4 NLRI - Route Reflector Scaling
On Wednesday 02 April 2008, David Freedman wrote: We have dedicated VPNv4 route reflectors, they work well for us. An inevitable end as the number of routes grows. In our case we use the cisco rr-group directive (http://www.cisco.com/en/US/docs/ios/12_3/iproute/command/reference/ip2_a1g.html#wp1040902) to limit RR clusters to the prefixes we actually want them to reflect, filtered by extcommunity. The downside to this of course is that the RRs spend time discarding prefixes when update time comes around for the PEs. Dave.
BGP Update Report
BGP Update Report Interval: 03-Mar-08 -to- 03-Apr-08 (32 days) Observation Point: BGP Peering with AS2.0 TOP 20 Unstable Origin AS Rank ASNUpds % Upds/PfxAS-Name 1 - AS9498 112594 1.8% 89.4 -- BBIL-AP BHARTI BT INTERNET LTD. 2 - AS24731 86506 1.4% 994.3 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 3 - AS479559162 1.0% 262.9 -- INDOSAT2-ID INDOSATM2 ASN 4 - AS958359010 0.9% 50.6 -- SIFY-AS-IN Sify Limited 5 - AS912157933 0.9% 23.0 -- TTNET TTnet Autonomous System 6 - AS17974 49249 0.8% 73.6 -- TELKOMNET-AS2-AP PT Telekomunikasi Indonesia 7 - AS815148905 0.8% 29.9 -- Uninet S.A. de C.V. 8 - AS26829 42926 0.7% 42926.0 -- YKK-USA - YKK USA,INC 9 - AS18306 42194 0.7%1140.4 -- MASANHANANET-AS-KR HANANET 10 - AS24863 41021 0.7% 89.2 -- LINKdotNET-AS 11 - AS14895 37427 0.6% 12475.7 -- LAWSON-SOFTWARE - Lawson Software 12 - AS886635531 0.6% 117.3 -- BTC-AS Bulgarian Telecommunication Company Plc. 13 - AS238633265 0.5% 23.2 -- INS-AS - ATT Data Communications Services 14 - AS22773 33139 0.5% 38.3 -- CCINET-2 - Cox Communications Inc. 15 - AS630632375 0.5% 688.8 -- Telcel, C.A 16 - AS23005 31944 0.5%1996.5 -- SWITCH-COMMUNICATIONS - SWITCH Communications Group LLC 17 - AS11830 30574 0.5% 13.2 -- Instituto Costarricense de Electricidad y Telecom. 18 - AS123927747 0.5% 7.3 -- SPRINTLINK - Sprint 19 - AS17487 26930 0.4% 26930.0 -- ICBCASIA-AP Industrial and Commercial Bank 20 - AS462126812 0.4% 171.9 -- UNSPECIFIED UNINET-TH TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASNUpds % Upds/PfxAS-Name 1 - AS26829 42926 0.7% 42926.0 -- YKK-USA - YKK USA,INC 2 - AS17487 26930 0.4% 26930.0 -- ICBCASIA-AP Industrial and Commercial Bank 3 - AS19334 23474 0.4% 23474.0 -- SPORTLINE-DBC - SPORTLINE 4 - AS42787 17891 0.3% 17891.0 -- MMIP-AS MultiMedia IP Ltd. 5 - AS13495 15818 0.3% 15818.0 -- NTT do Brasil Telecomunicaoes Ltda 6 - AS14895 37427 0.6% 12475.7 -- LAWSON-SOFTWARE - Lawson Software 7 - AS21291 11800 0.2% 11800.0 -- OMEGABANK 8 Dragatsaniou str 8 - AS309298286 0.1%8286.0 -- HUTCB Hidrotechnical Faculty - Technical University 9 - AS190177981 0.1%7981.0 -- QUALCOMM-QWBS-LV - Qualcomm Wireless Business Solutions 10 - AS151365605 0.1%5605.0 -- AS-NSPOF - NSPOF Communications Inc 11 - AS446565510 0.1%5510.0 -- HOLOSFIND-ROMANIA HOLOSFIND SRL 12 - AS419075180 0.1%5180.0 -- POLFA PZPF Polfa 13 - AS292255158 0.1%5158.0 -- TAIF-TELCOM-AS JSC TAIF-TELCOM 14 - AS250243276 0.1%3276.0 -- DECEUNINCK-PLASTICS Deceuninck Plastics Autonomous System 15 - AS369753151 0.1%3151.0 -- CBA-AS 16 - AS7257 8755 0.1%2918.3 -- PREMIERE-GLOBAL-SERVICES-INC - Premiere Global Services, Inc. 17 - AS391052758 0.0%2758.0 -- CLASS-AS SC Class Computers And Service SRL 18 - AS299102452 0.0%2452.0 -- IACP - INTL. ASSN OF CHIEF OF POLICEI 19 - AS400112091 0.0%2091.0 -- 65-79-192-0-SYNIVERSE-CRX - Panhandle Telecommunications Systems, INC. 20 - AS343782013 0.0%2013.0 -- RUG-AS Razgulay Group TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 125.23.208.0/20 57526 0.9% AS9498 -- BBIL-AP BHARTI BT INTERNET LTD. 2 - 12.108.254.0/24 42926 0.7% AS26829 -- YKK-USA - YKK USA,INC 3 - 64.79.128.0/1931752 0.5% AS23005 -- SWITCH-COMMUNICATIONS - SWITCH Communications Group LLC 4 - 213.91.175.0/24 27626 0.4% AS8866 -- BTC-AS Bulgarian Telecommunication Company Plc. 5 - 220.241.83.0/24 26930 0.4% AS17487 -- ICBCASIA-AP Industrial and Commercial Bank 6 - 203.101.87.0/24 25494 0.4% AS9498 -- BBIL-AP BHARTI BT INTERNET LTD. 7 - 63.169.11.0/2423474 0.4% AS19334 -- SPORTLINE-DBC - SPORTLINE 8 - 125.57.60.0/2421655 0.3% AS18306 -- MASANHANANET-AS-KR HANANET 9 - 124.7.192.0/2420548 0.3% AS9583 -- SIFY-AS-IN Sify Limited 10 - 211.175.148.0/24 19452 0.3% AS18306 -- MASANHANANET-AS-KR HANANET 11 - 221.128.192.0/18 19348 0.3% AS18231 -- EXATT-AS-AP Exatt Technologies Private Ltd. 12 - 202.140.63.0/24 18333 0.3% AS17443 -- ESTELCOM-AP International Internet gateway , India AS9498 -- BBIL-AP BHARTI BT INTERNET LTD. 13 - 193.33.184.0/23 17891 0.3% AS42787 -- MMIP-AS MultiMedia IP Ltd. 14 - 203.63.26.0/2416533 0.2% AS9747 -- EZINTERNET-AS-AP EZInternet Pty
The Cidr Report
This report has been generated at Fri Apr 4 21:14:24 2008 AEST.
The report analyses the BGP Routing Table of AS2.0 router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org for a current version of this report.
Recent Table History
Date PrefixesCIDR Agg
29-03-08254760 160771
30-03-08254714 160927
30-03-08254751 161160
31-03-08254425 161804
01-04-08254869 163354
02-04-08254282 164273
03-04-08256374 164322
04-04-08255841 164514
AS Summary
27912 Number of ASes in routing system
11759 Number of ASes announcing only one prefix
1623 Largest number of prefixes announced by an AS
AS4755 : VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System
88497920 Largest address span announced by an AS (/32s)
AS721 : DISA-ASNBLK - DoD Network Information Center
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 04Apr08 ---
ASnumNetsNow NetsAggr NetGain % Gain Description
Table 256013 1644679154635.8% All ASes
AS4755 1623 442 118172.8% VSNL-AS Videsh Sanchar Nigam
Ltd. Autonomous System
AS9498 1150 69 108194.0% BBIL-AP BHARTI BT INTERNET
LTD.
AS4323 1395 387 100872.3% TWTC - Time Warner Telecom,
Inc.
AS18566 1044 149 89585.7% COVAD - Covad Communications
Co.
AS22773 917 146 77184.1% CCINET-2 - Cox Communications
Inc.
AS11492 1211 461 75061.9% CABLEONE - CABLE ONE
AS6389 1022 298 72470.8% BELLSOUTH-NET-BLK -
BellSouth.net Inc.
AS17488 1010 298 71270.5% HATHWAY-NET-AP Hathway IP Over
Cable Internet
AS8151 1192 520 67256.4% Uninet S.A. de C.V.
AS1785 1001 346 65565.4% AS-PAETEC-NET - PaeTec
Communications, Inc.
AS6478 899 338 56162.4% ATT-INTERNET3 - ATT WorldNet
Services
AS18101 674 113 56183.2% RIL-IDC Reliance Infocom Ltd
Internet Data Centre,
AS2386 1394 858 53638.5% INS-AS - ATT Data
Communications Services
AS6197 988 512 47648.2% BATI-ATL - BellSouth Network
Solutions, Inc
AS7011 1083 619 46442.8% FRONTIER-AND-CITIZENS -
Frontier Communications of
America, Inc.
AS4812 565 104 46181.6% CHINANET-SH-AP China Telecom
(Group)
AS4134 857 419 43851.1% CHINANET-BACKBONE
No.31,Jin-rong Street
AS7018 1459 1034 42529.1% ATT-INTERNET4 - ATT WorldNet
Services
AS17676 509 88 42182.7% GIGAINFRA BB TECHNOLOGY Corp.
AS6198 729 313 41657.1% BATI-MIA - BellSouth Network
Solutions, Inc
AS855564 154 41072.7% CANET-ASN-4 - Bell Aliant
AS19262 892 491 40145.0% VZGNI-TRANSIT - Verizon
Internet Services Inc.
AS5668 683 292 39157.2% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS6140 615 231 38462.4% IMPSAT-USA - ImpSat USA, Inc.
AS8103 560 180 38067.9% STATE-OF-FLA - Florida
Department of Management
Services - Technology Program
AS9443 455 78 37782.9% INTERNETPRIMUS-AS-AP Primus
Telecommunications
AS3602 454 81 37382.2% AS3602-RTI - Rogers Telecom
Inc.
AS7545 481 117 36475.7% TPG-INTERNET-AP TPG Internet
Pty
120+ km long haul 1GE
Hi all! I've been looking at long haul (120+ km) options for repeaterless 1GE. Since these are not your garden variety optics, I'd appreciate any insights or recommendations. - Zed You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com
Nanog 43/CBX -- Hotel codes etc
Since several members pointed out I should post this information as people are buying their plane tickets here it is: If you plan on staying over in NY for a few extra nights to attend CBX or just enjoy the city you will need to use the codes below. I would recommend calling the hotel since you will need your nanog code as well as the CBX code below for your longer duration stay. Also, if you are PLANNING ANY EVENTS during the nanog and wish that information passed on to other attendees please feel free to forward me your event. I can also help make sure it does not conflict with any other events. I do know there are events planned for the weekend prior to nanog and there are events afterwards during the CBX. TIPS: New York is a wonderful city, however, as with any large city travel safely -Do not use your iPod white ear pieces. Especially on the subway at night -Travel in groups or with a local -Know where you are going ahead of time so you do not need to keep the map open -Using your laptop on the train at night and storing it in a big laptop bag that says LAPTOP or FORUM on it is a no-no -DO NOT go to the wonderful local Apple Store and walk around the city with that white APPLE bag full of iPhones -Stay on the main streets not the allays especially off-Broadway -Car services from the hotel are flat rates and very cost effective. It's a very safe city for the last decade but travel smartly and enjoy. Anyone wishing to be invited or included in any events around the city or sponsored activities please email me at davediaz AT telx.com or davediaz AT gmail.com HOTEL CODES: Rates for June 4th 5th at the Brooklyn Bridge Marriott use CODE # TXBTXBA Click here to book now http://cwp.marriott.com/nycbk/cbx/ Cocktail Event at Battery Park Gardens Wednesday June 4th 7 - 11pm - R.S.V.P to [EMAIL PROTECTED] - All NANOG Attendees are invited Telx Customer Business Exchange CBX Thursday June 5th 9am - 3pm Visit http://cbx.telx.com to register *It is FREE to attend - All NANOG Attendees are invited David Diaz telx +++ FACTA NON VERBA
Re: Nanog 43/CBX -- Hotel codes etc
On Fri, 4 Apr 2008 17:21:41 -0400 David Diaz [EMAIL PROTECTED] wrote: TIPS: New York is a wonderful city, however, as with any large city travel safely -Do not use your iPod white ear pieces. Especially on the subway at night -Travel in groups or with a local -Know where you are going ahead of time so you do not need to keep the map open -Using your laptop on the train at night and storing it in a big laptop bag that says LAPTOP or FORUM on it is a no-no -DO NOT go to the wonderful local Apple Store and walk around the city with that white APPLE bag full of iPhones -Stay on the main streets not the allays especially off-Broadway -Car services from the hotel are flat rates and very cost effective. It's a very safe city for the last decade but travel smartly and enjoy. I think you're contradicting yourself here... Anyway -- I regard most of those warnings as quite overblown. I mean, on lots of subway cars you stand out more if you don't have white earbuds in, probably attached to iPhones. Midtown is very safe. Your laptop bag doesn't have to say laptop on it to be recognized as such, but there are so many other people with laptop bags that you won't stand out if you have one. Subway crime? The average daily ridership is about 5,000,000; there are on average 9 felonies a day on the whole system. To quote a city police official I met, that makes the subways by far the safest city in the world. Yes, you're probably at more risk if you look like a tourist. But there are lots of ways to do that, like waiting for a walk sign before crossing the street... (Visiting Tokyo last month was quite a shock to my system; I had to unlearn all sorts of things.) Enjoy the city and don't worry about crime. The real danger is not remembering that you never have the right of way anywhere, unless you take it... (I currently live in a neighborhood that ~20 years ago, I probably wouldn't have dared to visit. But the city is safer now than it's been in at least 40 years.) --Steve Bellovin, http://www.cs.columbia.edu/~smb
Does TCP Need an Overhaul? (internetevolution, via slashdot)
in http://www.internetevolution.com/author.asp?section_id=499doc_id=150113 larry roberts says: ..., last year a new alternative to using output queues, called flow management was introduced. This concept finally solves the TCP unfairness problem and leads to my answer: Fix the network, not TCP. ... What is really necessary is to detect just the flows that need to slow down, and selectively discard just one packet at the right time, but not more, per TCP cycle. Discarding too many will cause a flow to stall -- we see this when Web access takes forever. Flow management requires keeping information on each active flow, which currently is inexpensive and allows us to build an intelligent process that can precisely control the rate of every flow as needed to insure no overloads. Thus, there are now two options for network equipment: o Random discards from output queues bIntelligent rate control of every flow -- creates much TCP unfairness o Intelligent rate control of every flow -- eliminates most TCP unfairness ... i wouldn't want to get in an argument with somebody who was smart and savvy enough to invent packet switching during the year i entered kindergarden, but, somebody told me once that keeping information on every flow was *not* inexpensive. should somebody tell dr. roberts? (i'd hate to think that everybody would have to buy roberts' (anagran's) Fast Flow Technology at every node of their network to make this work. that doesn't sound inexpensive to me.
Re: Does TCP Need an Overhaul? (internetevolution, via slashdot)
On Fri, Apr 4, 2008 at 9:51 PM, Paul Vixie [EMAIL PROTECTED] wrote: (i'd hate to think that everybody would have to buy roberts' (anagran's) Fast Flow Technology at every node of their network to make this work. that doesn't sound inexpensive to me. I suppose he could try to sell it... and people with larger networks could see if keeping state on a few million active flows per device is 'expensive' or 'inexpensive'. Perhaps it's less expensive than it seems as though it would. Oh, will this be in linecard RAM? main-cpu-RAM? calculated on ASIC/port or overall for the whole box/system? How about deconflicting overlapping ip-space (darn that mpls!!!) what about asymmetric flows? I had thought the flow-routing thing was a dead end subject long ago? -Chris
Re: Does TCP Need an Overhaul? (internetevolution, via slashdot)
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 - -- Christopher Morrow [EMAIL PROTECTED] wrote: I suppose he could try to sell it... and people with larger networks could see if keeping state on a few million active flows per device is 'expensive' or 'inexpensive'. Perhaps it's less expensive than it seems as though it would. I like respect Larry, etc., but actually, he is trying to sell it in a semi-disingenuous way: http://www.anagran.com/company_management.php See also: http://www.networkworld.com/news/2007/080607-roberts-fast-flow-routing.html - - ferg -BEGIN PGP SIGNATURE- Version: PGP Desktop 9.6.3 (Build 3017) wj8DBQFH9xCaq1pz9mNUZTMRAmSBAJ9FTHV/mWnZXcNR6drkqktdn+3DJACg6gaX 8/TN08qfaXCJrEhwhw0/ybw= =Mr08 -END PGP SIGNATURE- -- Fergie, a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg(at)netzero.net ferg's tech blog: http://fergdawg.blogspot.com/
