June 2011 - Test - lists.nanog.org

IPv6 - a noobs prespective
by Robert Lusby 14 Jun '11

14 Jun '11

As part of my role, I'm responsible, for a small (20 - 25 machine) network in the UK. When it comes to IPv6 I'm a complete noob. So ok - this is how I stand for IPv6: I "get" IPv4, I get NAT, I get why it's needed, and I get why it's evil. I know my IPv4 network inside and out, how DHCP runs and assigns addresses, how that ties in with our VPN, how everything gets channeled via the NAT to our ISP etc ... I also get why we need IPv6, that it means removing the NAT (which, surprise surprise also runs our Firewall), and I that I might need new kit for it. I am however *terrified* of making that move. There is so many new phrases, words, things to think about etc I want to, I'm keen to, and I know we have to, move to IPv6 - but at the moment it just seems so complicated - not least without affecting any IPv4 stuff. Just my own two pence from a noobie point of view. * On a side note - what's the best guide for upgrading a simple Windows network to run on IPv6? I'll take a read.

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Is a postmaster from csod.com/cornerstoneondemand.com present?
by Jason Gurtz 14 Jun '11

14 Jun '11

la4prd4.mx.csod.com seems to be having trouble saying helo/ehlo and disconnects after our welcome banner Users think we're blocking training registration emails from your large wholesale energy customer in the N.E. area; we're not. Please get in touch. 860.823.4118 if email fails. ~JasonG

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Re: AUS?
by Scott Weeks 14 Jun '11

14 Jun '11

--- santino.codispoti(a)gmail.com wrote: From: Santino Codispoti <santino.codispoti(a)gmail.com> Is there a nanogish group that covers AUS? ---------------------------------- First hit on a search engine: "australia network operator group". www.ausnog.net scott

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bgp feed to customer
by Richard Zheng 13 Jun '11

13 Jun '11

Hi, This is probably a typical setup for border router not speaking BGP, wonder how to handle it properly. Border router B is connected with customer router C. Router C wants default-only/partial/full routes. Router B can't or is not willing to handle it. Router C has a multihop EBGP session with a backbone router A. To get router B know the customer routes, router A redistributes them from EBGP to OSPF. The issue is redistribution from EBGP to OSPF works half way. OSPF database has the external routes, but forwarding address is set to Router A. So the routing loop occurs between A and B. I wonder if it is a design issue or configuration issue? Thanks, Richard ---------- -------------- ------------ | BGP rtr A | ============ | no-BGP rtr B | ============ | Customer C | ---------- -------------- ------------

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Streaming
by Joe Maimon 13 Jun '11

13 Jun '11

Is it just me tearing my hair out?

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Presentation slides on video feed
by Randy Carpenter 13 Jun '11

13 Jun '11

Does anyone know why the presentation slides keep going black after a few minutes for each presenter on the video feed? When a new presenter comes to the podium, their presentation appears, buy always goes black after a while. thanks, -Randy

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Anyone from Charter on here?
by Mike Lyon 13 Jun '11

13 Jun '11

Howdy, Would someone with network clue at Charter hit me up offlist? Need some assistance and I can't get past your wonderful support personnel. Thanks! Mike

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ATM Cell Capture File Request
by Kenneth M. Chipps Ph.D. 13 Jun '11

13 Jun '11

I need a capture file that can be opened in Wireshark that shows ATM cells to illustrate some lecture notes. The file the Wireshark site has does not show any detail for ATM, despite the file name. A search has uncovered no other file. GNS3 does not support ATM link captures. If anyone has such a thing they could share with me, please contact me offlist. Kenneth M. Chipps Ph.D.

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IPv6 and DNS
by Fabio Mendes 13 Jun '11

13 Jun '11

Hi guys, Firstly, sorry if this may sound too newbie for the list. Reading the discussion about dhcpv6 vs RAs, this question just popped in my mind. It seems that most of IPv6 addressing for hosts will be choosed using EUI-64 method. Considering that no one (specially endusers) will bother to memorize an IPv6 prefix plus a mac address, integration between DNS servers and routers/dhcpv6 servers will be crucial. For dhcp there is already a mechanism for updating names in the DNS server for dynamically assigned IPs. I suppose it will be used (use some modifications) for IPv6. However, I never heard of anything similar for routers (in the case of autoconfigured addresses). Are there any dns servers that support updates from routers ?

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Actual IPv6 test day issue
by Chris Adams 12 Jun '11

12 Jun '11

So I found out I had an actual end-user issue related to IPv6 test day. My mother couldn't get to our webmail with her B&N Nook Color (based on Android 2.3). I went over and couldn't connect with my T-Mobile G2 (Android 2.2) either. Their connection is via DSL and does not have IPv6 configured, but they do have a D-Link DIR-825 wireless router (just running as a wireless bridge with DHCP disabled). The DIR-825 was running an older code, 2.02NA, which was "IPv6 ready"; it had router advertisements enabled (there was no config option to disable them). The problem was that while HTTP would work on Android, HTTPS would not (you'd just get the standard "page not available" error). It appears that there is a bug in Android that keeps it from falling back to IPv4 for HTTPS connections. I don't know if that's somebody's idea of an extra level of "security" or what. I upgraded the DIR-825 to 2.05NA, which doesn't have RA always enabled, and everything works now (on IPv4 only). I haven't had a chance to set up a more detailed test; I just figured I'd throw it out there to see if anybody else saw such. -- Chris Adams <cmadams(a)hiwaay.net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.

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