Re: [WISPA] RED queues out, PCQ queues in - anyone else doing this?
Rubens, Thanks for the reply! I'm using a 5GHz AirMax back haul (PtMP) to two 2.4GHz APs (All UBNT gear). The 5GHz back haul has never broken a sweat. Our upstream is a 1M/256K high latency connection so there just isn't that much data to move. You got me thinking about the ack packets. Besides possibly a queue type, what do you think about prioritizing them high? Thanks! Greg On Apr 7, 2011, at 10:19 PM, Rubens Kuhl wrote: I was running Butch's script with PCQ queues but I started wondering about buffer bloat (yeah, I follow NANOG too) on the router. I thought about trying RED on the outbound queue since if packets are dropped and resent on our wireless network it's no biggie. Our wireless network is way overkill as far as our bandwidth needs. But I didn't want dropped packets on our inbound side because I didn't want to waste any of our precious satellite bandwidth. So I kept PCQ queues there. Before jumping into the conclusion that your network is overkill for your usage, you should first graph it in RX+TX pps if it's Wi-Fi, or RX pps and TX pps otherwise. Ideally you should also graph airtime % as well, but that's not a MIB-II standard item... AirControl might do it with UBNT gear. It seems like it made things work better but I never know for sure because our satellite bandwidth is oversold and what we get at any given moment is effected by what the other users who are on this same bandwidth are doing. Does anyone else mix queue types like that? Is this a dumb idea? I think it's not dumb, but the cause/effect relations on TCP make choosing which queue type to use in each direction a more complex decision than that. Trying more combinations might be good. One thing I would consider doing is using different queue types on each direction depending on packet size. TCP packets going outbound but have low size are just ACKs of incoming TCP data, and the other way around. non-TCP packets would also have a different QoS strategy as it's usually non-responsive to packet loss or delay variations. Rubens WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] RED queues out, PCQ queues in - anyone else doing this?
One of the best examples is the impact of half duplex radios, or adaptive speed (modulation) radios, on bandwdith management systems that treat Ideally, adaptive modulation radios should have QoS policies built-in. That is true for Ceragon IP-MAX^2 radios that are aware to EXP MPLS markings, but besides that expection, I don't know radios that do it. for us, for 10 years. But as our network became more congested, half duplex did show to be a challenge for traffic management. It came to a point where Full Duplex licensed links was the only answer, and helped the most. And then our traffic management became more reliable as a result. My point is, its not only the method of traffic management that matters, but also the characteristics of the network. Queuing and QOS will always help make the best of one's network, but it wont fully make up for deficiencies in a physical network. For a growing-up network, I think two half-duplex could be used for better performance. For instance, two OSPF links with unequal inverted costs, so each one will normally have unidiretional traffic, fall-back to bidirectional if one of the links fail. Rubens WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
[WISPA] Cat5E
Looking for an aerial, shielded, Cat5E with steel messenger wire suitable for a 250ft span. Anybody got or seen such a thing? Price and availability? WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Cat5E
Blair,for your viewing pleasure. http://www.americantechsupply.com/outdoorcat5ewithmessenger.htm --- On Sun, 4/10/11, Blair Davis the...@wmwisp.net wrote: From: Blair Davis the...@wmwisp.net Subject: [WISPA] Cat5E To: memb...@wispa.org, WISPA General List wireless@wispa.org Date: Sunday, April 10, 2011, 5:05 PM Looking for an aerial, shielded, Cat5E with steel messenger wire suitable for a 250ft span. Anybody got or seen such a thing? Price and availability? WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
[WISPA] Spiceworks
Anyone using spiceworks at their ticket software? Would appreciate some insight into it. Thanks, Justin -- Justin Wilson j...@mtin.net Aol Yahoo IM: j2sw http://www.mtin.net/blog xISP News http://www.twitter.com/j2sw Follow me on Twitter Wisp Consulting Tower Climbing Network Support WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Cat5E
There are a handful of listings on E-Bay. Just do a search for aerial cat5. http://cgi.ebay.com/250-CAT-5E-OUTDOOR-AERIAL-SELF-SUPPORTING-W-MESSENGER-/360248674569?pt=LH_DefaultDomain_0hash=item53e07e8909 On 4/10/2011 5:05 PM, Blair Davis wrote: Looking for an aerial, shielded, Cat5E with steel messenger wire suitable for a 250ft span. Anybody got or seen such a thing? Price and availability? WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
