November 2003 - Test - lists.nanog.org

Re: [nsp] Re: Per VLAN Stats on MSFC2 - Complaints from the Field
by Stephen J. Wilcox 20 Nov '03

20 Nov '03

On Thu, 20 Nov 2003, Gert Doering wrote: > This is all nice and shiny, but having shortcuts doesn't mean "the L2 > fabric can't export the resulting numbers up to the L3 brain". > > They just botched it. Counters and Cisco boxes seem to be fundamentally > incompatible. I was under the impression that the information you want is lost once the packets are being forwarded by the switch which is using some hashing on the src and dst details which doesnt tie back to the L3 data in a one-to-one basis... Anyway, on a similar thread that doesnt explain why mac accounting cant be used which I used to find very useful on non p2p interfaces... Steve

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Re: RBLs in use
by Suresh Ramasubramanian 20 Nov '03

20 Nov '03

Kai Schlichting <kai(a)pac-rim.net> writes: > BT have (quite rightly) been repeatedly blocked by DNSBL's and private > lists as a result of their poor record in handling abuse incidents (whether > that's by intent or negligence by way of a colossal management failure is > another debate entirely). How sure are you, beyond just the usual nan(og|ae) idle chatter? BT is much better off than some ISPs I can think of. I do happen to know they have a few good people in there working for them. If the guy is asking for DNSBLs to use, and you have some good ones in mind, help him, I'd say. --srs -- srs (postmaster|suresh)(a)outblaze.com // gpg : EDEDEFB9 manager, outblaze.com security and antispam operations

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RBLs in use
by Paul S. Brown 20 Nov '03

20 Nov '03

I have been asked to find out what DNSBLs are in use so my employer can see what the incidence of its being blacklisted is and how much impact this is likely to have had on their business. What DNSBLs are being used by the various agencies represented on NANOG and how much weighting do you give them. Are there any DNSBLs you would completely ignore due to data quality issues? Thanks Paul

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Per VLAN Stats on MSFC2 - Complaints from the Field
by Robert A. Hayden 20 Nov '03

20 Nov '03

Hey all, This one is a weird one. I apologize if this is a bit off topic. As everyone is probably aware, the Cisco 6500/7600 line is unable to provide per-vlan I/O statistics on routed interfaces (ie, a "show int vlan xxx" has meaningless numbers in the I/O and error fields at the end). MIB tables also fail to provide meaningful data. You CAN get some L2 VLAN data, but that doesn't help you when you need to know what's going through the router interface. We've be going around and around with the vendor for a while now about how this makes it pretty useless for traffic analysis, and even showed them the RFC that requires that the information be made available to call it a router. Their latest tactic is to claim that "nobody else in the industry is concerned about this shortcoming". For us, we've been collecting routed interface stats going back all the way to 1996 and with our new gear we've been sold we find that our graphs are pretty empty and we get no reasonable information about how much traffic is passing through the L3 interfaces. So, here's the question I have for anybody out there dealing with this hardware. Is this shortcoming an issue for how you run your network? Have you asked Cisco to fix it? My feeling is that a lot of people find it to be an issue and simply accept it is yet another broken cisco thing. Please let me know privately. I want to talk into our next meeting with some printed testimonials from "real people" that this box is plain broken. Let me know as well if you don't want me to use your name and/or organization in my report. Thanks for your time. - Robert Hayden University of Wisconsin Madison

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Re:
by Michael.Dillon＠radianz.com 20 Nov '03

20 Nov '03

> I am a student doing my Masters thesis. My query is that Someone doing graduate studies in networking should really do some basic research before asking questions on a mailing list. Normally, you start by reviewing the literature. If you had done that you would have discovered that your questions don't have an answer because you are asking the wrong questions. You will also discover that the network operators on this mailing list don't have the kind of answers that you are looking for. I suggest that you spend a few weeks reading papers from http://citeseer.nj.nec.com/cs and also from the homepages of the authors. --Michael Dillon

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None
by sandoche balakrishnan 20 Nov '03

20 Nov '03

Bonjour, I am a student doing my Masters thesis. My query is that 1. what is the way to predict how a traffic will be arriving in router, by having a statistical information of the length of the bursts and the silence. (are there any papers which have worked on it) 2. Is it possible to improve the efficiency of a switching fabric if we know the traffic profile . Thanks Cordialement, Sandoche Balakrichenan. _________________________________________________________________ Contact brides & grooms FREE! Only on www.shaadi.com. http://www.shaadi.com/ptnr.php?ptnr=hmltag Register now!

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Re: Utility Mapping to be featured at the 2003 DPC in Tampa
by John Palmer 20 Nov '03

20 Nov '03

Its at http://www.michigan.gov/documents/mpsc_blackout_77423_7.pdf ----- Original Message ----- From: "daniel lance herrick" <dan.herrick(a)pbs.proquest.com> To: "John Palmer" <nanog(a)adns.net> Sent: Thursday, November 06, 2003 10:25 Subject: Re: Utility Mapping to be featured at the 2003 DPC in Tampa > On Thu, 6 Nov 2003, John Palmer wrote: > > > Also public information tells alot about things. > > The Michigan PUC just finished their study of > > the August 14th blackout and has issued their > > report. In it it has a section that outlines the > > restoration procedures the DTE and ITC (the > > transco) took to restore service. > > Is that report on the web? (I didn't find it in > the first seven pages of my Google search, but it > could be not yet indexed.) > > Would you share the URL? > > dan > > > > >

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Mirapoint Message Director appliances
by Paul S. Brown 19 Nov '03

19 Nov '03

Does anybody have any experience with the MD400/MD450 appliances? Good/bad/indifferent Do they do anything I can't do myself with Sophie, Cyrus IMAP, Postfix and SpamAssassing on a decent PC? Would you recommend them for high volume VISP mail hosting? (around 600k domains) Thanks for any opinions anybody has. P.

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Comcast
by John Ferriby 19 Nov '03

19 Nov '03

Could someone from Comcast please contact me off-list? Thanks - John now back to the IANA allocations rehash...

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New IANA IPv4 Allocations
by Steve Conte 19 Nov '03

19 Nov '03

Greetings, This is to inform you that the IANA has allocated 83/8 and 84/8 to the RIPE NCC. For a full list of IANA allocations please see : http://www.iana.org/assignments/ipv4-address-space Thanks, Steve --------------- Steve Conte - IANA conte(a)iana.org PGP KeyID: E72D5F30

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