Re: Verizon FiOS Distribution Switch
On 1/19/11 3:56 PM, Chris Burwell cburw...@gmail.com wrote: Any advice or tips would be helpful. If all you need the ActionTek for is a MoCA bridge (to make the cable boxes talk to the larger world), my experience is you can move it to the inside of your NAT if you like. One does not need to burn a routable IP for it. On 1/19/11 5:25 PM, Mike mike-na...@tiedyenetworks.com wrote: also add 'nonegotiate' and turn off spanning tree on the port while you're at it. There's a list somewhere of standard stuff when connecting to an untrusted l2 network, which is what you should treat anything (including FiOS) connecting to you that you don't own. Nonegotiate doesn't touch STP. It stops the switchport from sending DTP frames, but one wouldn't be attempting to establish a trunk to a FiOS ONT. http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/1 2.1_11_ea1/command/reference/cli2.html#wpmkr3005909 To stop a port from participating in spanning tree, one would want some combination of global and interface bpduguard and bpdufilter. Which combination you want seems to vary with every Cisco Press book and document, and every engineer has a different idea of which is correct. One is best off labbing it out themselves with the equipment they intend to use. -porkchop -- Michael Kaegler, TESSCO Technologies: Engineering, 410 229 1295 Your wireless success, nothing less. http://www.tessco.com/
Re: Nanog Webcast Equipment
On 7/1/09 1:24 AM, Charles Wyble char...@thewybles.com wrote: Would love to see replies and/or summary on list if possible. Since theres interest, I'll share a multicast solution that has so far worked for us for internal use. (Abilene/Internet2 connected institutions may use this publically too.) After getting multicast working, we used a DV camera that our marketing team had (camcorders work too) and connected it via firewire to a laptop. We ran a product called Wirecast (we used MacOS, Wintel version is available too), which can switch between multiple video sources, static images, video files, and even presentation computers (signal is network-delivered) etc... And output simultaneously to several destinations which can include multicast and unicast addresses, with each stream at a different quality. We had to be sure quicktime was installed on the client machines, and we created a web page with the benefit of AC_Quicktime.js (google for it; you'll find a copy with full instructions) which allowed clients to subscribe to the large multicast feed. For remote sites with small links, one could provide a link to a smaller multicast feed. For clients who could not do multicast for whatever reason, the small multicast feed was subscribed to by an OSX server running the Quicktime Streaming Server (built-in). It retransmitted the video in unicast. (You have to do this by placing the SDP file in the Movies/ directory of the server.) The wirecast license cost is $450 for the big one and theres a free demo. The number of viewers is limited by your network and user support infrastructure. All the other components we already owned. And, as any photography nerd will tell you, quality isn't a function of codec and bandwidth alone. A webcam produced a usable but unremarkable image. Using the Real Camera made a world of difference and made the stream look broadcast-quality. The opportunity to do a company-wide multicast hasn't come up yet, but we keep it in our back pocket. Company-wide testing went without a hitch. -porkchop -- Michael Kaegler, TESSCO Technologies: Engineering, 410 229 1295 Your wireless success, nothing less. http://www.tessco.com/
Re: Geo Location and DNS
We last went through this 30 days ago. http://www.merit.edu/mail.archives/nanog/msg17619.html -porkchop On 5/29/09 1:50 PM, Clue Store cluest...@gmail.com wrote: Hi All, I am having a hell of a time trying to figure out who it is I need to contact to get this fixed. I just got a new /21 allocation from ARIN and am announcing it with no issues. I can ping anywhere and the planet can see me. The issue I am having is that when I surf out on this new allocation, it sends me to sites as if I were in Canada. A google search is all things canadian. Not that I have anything against canadians, but I also cannot surf to alot of sites using various DNS servers (my own, 4.2.2.2, etc). Anyone have any clue where I can get this fixed?? TIA, Max -- Michael Kaegler, TESSCO Technologies: Engineering, 410 229 1295 Your wireless success, nothing less. http://www.tessco.com/
Testing LFNs
I have a new T3 thats 65msec long. I'd usually be using iperf to test new links, but at 65msec, even at the maximum window size, I can only get 6-8mbit through. No combination of options I've been able to find has gotten me more than 6mbit through this link. Should I just shotgun 9 copies of it? Are there better ways to test these links? Can one verify this link with just a pair of 7200s and linux machines on either side? Or is this something one really needs real test hardware for? If 6mbit go through clean, is there a real chance 44 will not? TIA, -mKaegler -- Michael Kaegler, TESSCO Technologies: Engineering, 410 229 1295 Your wireless success, nothing less. http://www.tessco.com/
Re: Testing LFNs (Wrapup)
Thanks to everyone who responded on and off-list! It seems evident that I didn't have a complete understanding of the iperf switches which alter buffer sizes. Several people made a few neat points, which I'll quickly summarize: * In iperf, -P will allow one to run multiple tcp tests at once. * IOS has a built-in tester... ttcp. http://tinyurl.com/6fp75j * For suggestions on changing the kernel buffer sizes: * . http://www.29west.com/docs/THPM/ (section 8) * . http://fasterdata.es.net/ * Linux.com has a related writeup: http://www.linux.com/feature/144532 Finally, past performance does not indicate future results applies here. 44mbit will not necessarily go clean just because 6 did. Thanks for the tips, -mKaegler On 5/6/09 11:10 AM, Michael Kaegler kaegl...@tessco.com wrote: I have a new T3 thats 65msec long. I'd usually be using iperf to test new links, but at 65msec, even at the maximum window size, I can only get 6-8mbit through. No combination of options I've been able to find has gotten me more than 6mbit through this link. Should I just shotgun 9 copies of it? Are there better ways to test these links? Can one verify this link with just a pair of 7200s and linux machines on either side? Or is this something one really needs real test hardware for? If 6mbit go through clean, is there a real chance 44 will not? TIA, -mKaegler -- Michael Kaegler, TESSCO Technologies: Engineering, 410 229 1295 Your wireless success, nothing less. http://www.tessco.com/
