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05 Jan '01

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Pictures of Schenectady NY CO flood?
by Sean Donelan 05 Jan '01

05 Jan '01

Did anyone get pictures of the latest CO to flood in Schenectaday, NY last week?

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BGP Persistent Route Oscillation Condition
by Clayton Fiske 05 Jan '01

05 Jan '01

In reference to: http://www.ietf.org/internet-drafts/draft-mcpherson-bgp-route-oscillation-0… I keep trying to see if I'm overlooking something. The first Type I Churn example (using route reflectors) has either omitted something, or is inconsistent in the following 2 steps: --- 2) Rd receives the UPDATE from Ra, which leaves Rd with the following installed in its BGP table: NEXT_HOP AS_PATH MED IGP Cost ----------------------- * 6 100 0 12 6 100 1 5 Rd then marks the '6 100, 0, 12' route as best because it has a lower MED. Rd sends an UPDATE message to its neighbors to let them know that this is the best route. 3) Ra receives the UPDATE message from Rd and now has the following in its BGP table: NEXT_HOP AS_PATH MED IGP Cost ----------------------- 6 100 0 13 6 100 1 4 * 10 100 10 5 The first route (6 100, 0, 13) beats the second route (6 100, 1, 4) because of lower MED, then the third route (10 100, 10, 5) beats the first route because of lower IGP metric to NEXT_HOP. Ra sends an UPDATE message to its peers to let them know its new best route. --- In step 2, the first route is chosen because of a lower MED, but the lower IGP cost of the second route is ignored. In step 3, the third route is chosen by lower IGP cost, despite having a higher MED than the first. Am I simply forgetting something here? -c

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ADSL Info
by deen＠slt.lk 05 Jan '01

05 Jan '01

Hello Nanog, Can anyone tell me whether there is an ADSL Forum, and a ADSL Mailing List server which I can subscribe to. Could someone direct me to a site where a description is given on drafting Specifications to purchase (1) CPE/Customer Premise Equipment (2) DSLAM (3) ATM and/or Broadband RAS Preferably Pruduct Independent! Deen Sri Lanka Telecom

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How can we provide enough IP address to MAN network
by Yu Ning 05 Jan '01

05 Jan '01

Hi nanog, When we build MAN (Metropolitan Area Network), we're basically enable the ip layer communication between millions of end system - taking into account the number of family, business building PCs,etc. Recall the scarcity of IPv4 address, I wonder how this huge ip address demand was met in US ? In my mind, we have the following choices: 1. Build the MAN into a private address network, a class A network 10.x.x.x will be sufficient for most metropolitan. But the cons is: need PAT/NAT to access public Internet, and that leads to the potential performance bottleneck. 2. Just wondering, can we use a distributed DHCP system? In this scenario, we can almost convert the address consuming MAN into a 10 to 1 (or 20 to 1) address pool, which achieve nearly the same address utilization efficiency of dialup address pool. Cons: don't know the scalability of DHCP, any comments? 3. Build the MAN into a IPv6 network, and use address conversion at the interconnection point between v4 and v6. Just an idea, feeling that conversion efficiency between v4-v6 should be better than NAT/PAT, any support comments? thanks ! Yu Ning -------------------------------------- (Mr.) Yu Ning, Chief Eng. Internet Network Product Dep. Data Com. Bureau, China Telecom Beijing, P.R.C. +86-10-62072357/54 --------------------------------------

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Is there anyone clueful at Conxion ?
by Bruce Campbell 05 Jan '01

05 Jan '01

Or, who do you contact in Conxion to stop receiving their notification notices? My employer seems to have gotten onto their list by mistake (no current or former connection to Conxion) and since September, no-one in Conxion has deigned to reply to requests to cease and desist via appropriate channels (ie, the return email address, phone, domain/IP/ASN contacts). --==-- Bruce.

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RE: florida ix(en) facing south
by Barrows, Jeff 05 Jan '01

05 Jan '01

>but those "clueless folks" are just providing L2 switching >and colocation in an essence. > >My point is -- it is important to whom do you peer at NAP, >not who is your "real estate" landlord. if you don't care how often the L2 thing goes down, how knowledgeable the person that picks up the phone is, or how long it takes to figure out the difference between single- and multi-mode fiber. i won't call them clueless, or insinuate that either of the IX operators discussed here are, but... yes, it does matter whether or not they are knowledgeable folks on the technology side, and yes, i want them to understand IP traffic, traffic queuing, capacity planning, congestion issues, scaling, platforms, and other things that Internet providers need to discuss with them. luckily, while some of the players down in Miami may have interests in a Miami IX from the real estate side, i don't think either of them are proposing having a bricklayer or handyman configuring the L2 gear. still though, none of that matters if the set of folks that i want to connect to aren't present there with the parts [not just transit] of their network that i want to connect to-- so that's what i am interested in knowing at the moment. i am also quite interested in knowing what the 'familiar' folks' (i.e., Equinix, Worldcom, etc.) positions are on developing an exchange in that region, and would welcome their stepping up to the demand. (either in this forum or directly.) - jsb

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FYI...
by Danny McPherson 04 Jan '01

04 Jan '01

To: IETF-Announce: ; From: Internet-Drafts(a)ietf.org Subject: I-D ACTION:draft-mcpherson-bgp-route-oscillation-00.txt Date: Thu, 04 Jan 2001 07:26:57 -0500 A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : BGP Persistent Route Oscillation Condition Author(s) : D. McPherson, V. Gill, D. Walton, A. Retana Filename : draft-mcpherson-bgp-route-oscillation-00.txt Pages : 18 Date : 03-Jan-01 The Border Gateway Protocol (BGP) [1] is an inter-Autonomous System routing protocol. The primary function of a BGP speaking system is to exchange network reachability information with other BGP systems. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-mcpherson-bgp-route-oscillation-0… Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-mcpherson-bgp-route-oscillation-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv(a)ietf.org. In the body type: "FILE /internet-drafts/draft-mcpherson-bgp-route-oscillation-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages.

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FTP with authentication to RADIUS
by Michael Medwid 04 Jan '01

04 Jan '01

Anyone know of an FTP server product that hooks into RADIUS for authentication? NT or Linux?

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Dialup congestion and winter weather
by Sean Donelan 04 Jan '01

04 Jan '01

It seems like a lot of people are at home, dialing into the Internet today. There is a major ice storm in the middle of the country, and its pretty much a holiday week elsewhere. Traffic seems to be moving on the major backbones, but some folks in the midwest report some problems dialing in from home.

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