RE: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi
You got it right Lee. The higher speeds will not necessarily be of use for us in the higher ed sector (yet... you never know), although it will be nice to simply have the capability in those special cases where they could be used. For now the one advantage that Gigabit Wi-Fi will provide will be improved HD video streaming. Again, you could see this mainly as a consumer-oriented advantage rather than an enterprise. But we are seeing more and more devices with wireless network capabilities these days. I think these new standards will be the answer to the growth of all these upcoming WiFi-enabled devices. Hector Rios Louisiana State University
Re: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi
I can't find the direct quote. I can find the mission statement that is directly related to it: http://www.google.com/fiber/kansascity/about.html But a project manager invovled with the Google Fiber Project (Gigabit access to the home in Kansas City) had a quote along the lines of: When everyone had a modem, and only accessed email and basic webpages, nobody could imagine downloading a movie, and video conferencing (Skyping). Now this is commonplace. We don't know what people will do with larger bandwidth, because it's never been available. I think of this quote every time someone start talking about connection speeds (Be it Wireless, Wired, and Consumer Connections) Mike On Wed, Jan 11, 2012 at 9:44 AM, Hector J Rios hr...@lsu.edu wrote: You got it right Lee. The higher speeds will not necessarily be of use for us in the higher ed sector (yet... you never know), although it will be nice to simply have the capability in those special cases where they could be used. For now the one advantage that Gigabit Wi-Fi will provide will be improved HD video streaming. Again, you could see this mainly as a consumer-oriented advantage rather than an enterprise. But we are seeing more and more devices with wireless network capabilities these days. I think these new standards will be the answer to the growth of all these upcoming WiFi-enabled devices. ** ** Hector Rios Louisiana State University ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
RE: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi
With the amount of glasses free HD 3D screens being shown at CES this week, I would imagine something along the lines of Skype in HD 3D. Also, the next HD standard will be 4k HD. That will exceed the limits of current 802.11n. Think of it this way, HDMI version 1.4 cables are capable of 10Gbps. People are going to want that without the wires (eventually). Can you imagine the day when all you have to do is hang that new TV on your wall and plug in the power? I can. And it will be amazing. Of course then there's wireless power. So maybe not even a power cable. :) Zach Jennings Senior Network Server Manager Aruba Certified Mobility Professional, Airheads MVP West Chester University of PA 610-436-1069 From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mike King Sent: Wednesday, January 11, 2012 10:37 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi I can't find the direct quote. I can find the mission statement that is directly related to it: http://www.google.com/fiber/kansascity/about.html But a project manager invovled with the Google Fiber Project (Gigabit access to the home in Kansas City) had a quote along the lines of: When everyone had a modem, and only accessed email and basic webpages, nobody could imagine downloading a movie, and video conferencing (Skyping). Now this is commonplace. We don't know what people will do with larger bandwidth, because it's never been available. I think of this quote every time someone start talking about connection speeds (Be it Wireless, Wired, and Consumer Connections) Mike On Wed, Jan 11, 2012 at 9:44 AM, Hector J Rios hr...@lsu.edumailto:hr...@lsu.edu wrote: You got it right Lee. The higher speeds will not necessarily be of use for us in the higher ed sector (yet... you never know), although it will be nice to simply have the capability in those special cases where they could be used. For now the one advantage that Gigabit Wi-Fi will provide will be improved HD video streaming. Again, you could see this mainly as a consumer-oriented advantage rather than an enterprise. But we are seeing more and more devices with wireless network capabilities these days. I think these new standards will be the answer to the growth of all these upcoming WiFi-enabled devices. Hector Rios Louisiana State University ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
WAPS seem to die after switch reboot
Hello, I am running multiple Cisco 4404 controllers Vers-7.0.116 and the majority of the WAPS are CAPWAP 1131's . The issue I seem to be having is that lately when I reboot an access layer switch, POE, 3750 series, with WAPS attached, I lose some of the WAPS. The WAPS never come back on line again and appear to be dead. They were completely operational prior to the reboot, but after reloading the switch, no switch configuration changes, the WAPS never come back on line. I have shut/no shut the interfaces of the switch, and the switches POST seems fine. Just wondering if anyone else has seen this issue, I have lose about 30 WAPS so far. Thanks!! Vikki Cutrone Network Admin Vassar College ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] WAPS seem to die after switch reboot
Vikki, After the reboot are the APs still drawing power, just not showing a link light on the switch? Have you tried plugging a console cable into an AP when you do a reboot on the 3560 to see what messages the AP returns? I have seen an issue on our 3560's before, and the condition was related to low power, though the switch did not throw a log message until I upgraded the firmware to a newer version. We had not exceeded the number of allowable APs/wattage on the switch, but we had undersized the UPS that the switch was connected to. Essentially when the switch rebooted and attempted to power on all of the APs, it would overload the UPS, cause a slight low voltage situation and so the switch would disable all POE power. On Wed, Jan 11, 2012 at 3:37 PM, Lee H Badman lhbad...@syr.edu wrote: Did you try a per port “power inline never” then “power inline auto”? simple “no shut” does line protocol but not power… ** ** -Lee Badman *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] *On Behalf Of *Vikki Cutrone *Sent:* Wednesday, January 11, 2012 3:33 PM *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU *Subject:* Re: [WIRELESS-LAN] WAPS seem to die after switch reboot ** ** Hi, No the 3750's are the older model and are not fully populated with WAPS, ( about 18 total on a 48 port POE) so I don't think I am running out of power, also after the switch is up if you show int they appear disconnected down/down, attempt a no shut and they never come back on line. Thanks Vikki On 1/11/2012 3:06 PM, Jeffrey Sessler wrote: Are the 3750's the new X model or something older? Are you sure you're not running out of power allocation on the switch... that is, the initial call for power across all the ports is higher than the unit can supply, so the switch is leaving some ports down? Jeff On Wednesday, January 11, 2012 at 11:39 AM, in message 4f0de572.3000...@vassar.edu 4f0de572.3000...@vassar.edu, Vikki Cutrone vicutr...@vassar.edu vicutr...@vassar.edu wrote: Hello, I am running multiple Cisco 4404 controllers Vers-7.0.116 and the majority of the WAPS are CAPWAP 1131's . The issue I seem to be having is that lately when I reboot an access layer switch, POE, 3750 series, with WAPS attached, I lose some of the WAPS. The WAPS never come back on line again and appear to be dead. They were completely operational prior to the reboot, but after reloading the switch, no switch configuration changes, the WAPS never come back on line. I have shut/no shut the interfaces of the switch, and the switches POST seems fine. Just wondering if anyone else has seen this issue, I have lose about 30 WAPS so far. Thanks!! Vikki Cutrone Network Admin Vassar College ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.http://www.educause.edu/groups/ ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** ** ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. -- Joe Roth Networking Group Binghamton University Ph. 607-777-7528 Fax 607-777-4009 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
RE: [WIRELESS-LAN] WAPS seem to die after switch reboot
For clarity- the power commands I referenced are port by port, not global. -Lee -Original Message- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Vikki Cutrone Sent: Wednesday, January 11, 2012 3:50 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] WAPS seem to die after switch reboot Hi, They are down/down never to come on line again. This is a show power inline-- Fa1/0/33 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Module Available Used Remaining (Watts) (Watts)(Watts) -- - - 1 370.0 231.0 139.0 2 n/an/a n/a 3 n/an/a n/a 4 n/an/a n/a Did a power inline never power inline auto-- Fa1/0/33 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Samm result On 1/11/2012 3:32 PM, David Pita wrote: Do a show power inline | i AP, this will filter out the APs on the power inline output. Verify that they are all there, then check cdp details on each port to make sure they have an IP. David Pita Wireless Network Engineer UTS Network Management Services Florida International University 305.348.3658 On 01/11/2012 02:39 PM, Vikki Cutrone wrote: Hello, I am running multiple Cisco 4404 controllers Vers-7.0.116 and the majority of the WAPS are CAPWAP 1131's . The issue I seem to be having is that lately when I reboot an access layer switch, POE, 3750 series, with WAPS attached, I lose some of the WAPS. The WAPS never come back on line again and appear to be dead. They were completely operational prior to the reboot, but after reloading the switch, no switch configuration changes, the WAPS never come back on line. I have shut/no shut the interfaces of the switch, and the switches POST seems fine. Just wondering if anyone else has seen this issue, I have lose about 30 WAPS so far. Thanks!! Vikki Cutrone Network Admin Vassar College ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] WAPS seem to die after switch reboot
Vicki, If I remember correctly the power module in the cisco switch controls ports in groups of 4. Try and move one of the dead access points to a port in a group of 4 that does NOT already have an access point in the group. I've seen issues like this before but not on a 3560. Regards, Craig Eyre Network Analyst IT Services Department Mount Royal University 4825 Mount Royal Gate SW Calgary AB T2P 3T5 P. 403.440.5199 E. ce...@mtroyal.ca The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather in a lack of will. Vincent T. Lombardi From: Vikki Cutrone vicutr...@vassar.edu To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Date: 01/11/2012 01:50 PM Subject:Re: [WIRELESS-LAN] WAPS seem to die after switch reboot Sent by:The EDUCAUSE Wireless Issues Constituent Group Listserv WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Hi, They are down/down never to come on line again. This is a show power inline-- Fa1/0/33 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Module Available Used Remaining (Watts) (Watts)(Watts) -- - - 1 370.0 231.0 139.0 2 n/an/a n/a 3 n/an/a n/a 4 n/an/a n/a Did a power inline never power inline auto-- Fa1/0/33 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Samm result On 1/11/2012 3:32 PM, David Pita wrote: Do a show power inline | i AP, this will filter out the APs on the power inline output. Verify that they are all there, then check cdp details on each port to make sure they have an IP. David Pita Wireless Network Engineer UTS Network Management Services Florida International University 305.348.3658 On 01/11/2012 02:39 PM, Vikki Cutrone wrote: Hello, I am running multiple Cisco 4404 controllers Vers-7.0.116 and the majority of the WAPS are CAPWAP 1131's . The issue I seem to be having is that lately when I reboot an access layer switch, POE, 3750 series, with WAPS attached, I lose some of the WAPS. The WAPS never come back on line again and appear to be dead. They were completely operational prior to the reboot, but after reloading the switch, no switch configuration changes, the WAPS never come back on line. I have shut/no shut the interfaces of the switch, and the switches POST seems fine. Just wondering if anyone else has seen this issue, I have lose about 30 WAPS so far. Thanks!! Vikki Cutrone Network Admin Vassar College ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
RE: [WIRELESS-LAN] WAPS seem to die after switch reboot
We're dealing with a similar issue right now too, but it seems to be AP-independent. We have a mix of Cisco 3500's and 1250's running on Cisco 3750EPs (running 12.2(53)SE2) and a sample of each type of AP experience the problem. Our 3750's are Gigabit so I've been using the 'test cable-diagnostic tdr' feature to see if there might be a cabling issue and in 95% of the cases it shows that pairs A and B are swapped between the local and remote ends. I'm still not sure how much I trust those results since they include 3 separate runs of cable (cross connect, infrastructure, and jumper at the AP) but it's still something. We figured out a workaround of sorts by hardcoding the ports to 1000M full duplex and it seems to work in most cases. For the rest, either reseating or replacing the cross connect has fixed it. In all cases, the tell-tale indicator is a value of 'IeeePD' in the Device field of a 'show power inline | ex off'. I've seen that happen whether or not the line protocol on the port is up, oddly enough. I've got an email out to Cisco to see if this might be some undocumented bug or...what. If I get anything worthwhile back I'll share. Thanks, -- Brandon Case, CCNA Network Engineer, ITaP Purdue University ca...@purdue.edu Office: (765)49-67096 Mobile: (765)479-7597 Fax:(765)49-46620 PGP Fingerprint: 99CB 02D6 983C 1E2A 015F 205C C7AA E985 A11A 1251 -Original Message- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Craig Eyre Sent: Wednesday, January 11, 2012 3:55 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] WAPS seem to die after switch reboot Vicki, If I remember correctly the power module in the cisco switch controls ports in groups of 4. Try and move one of the dead access points to a port in a group of 4 that does NOT already have an access point in the group. I've seen issues like this before but not on a 3560. Regards, Craig Eyre Network Analyst IT Services Department Mount Royal University 4825 Mount Royal Gate SW Calgary AB T2P 3T5 P. 403.440.5199 E. ce...@mtroyal.ca The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather in a lack of will. Vincent T. Lombardi From: Vikki Cutrone vicutr...@vassar.edu To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Date: 01/11/2012 01:50 PM Subject:Re: [WIRELESS-LAN] WAPS seem to die after switch reboot Sent by:The EDUCAUSE Wireless Issues Constituent Group Listserv WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Hi, They are down/down never to come on line again. This is a show power inline-- Fa1/0/33 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Module Available Used Remaining (Watts) (Watts)(Watts) -- - - 1 370.0 231.0 139.0 2 n/an/a n/a 3 n/an/a n/a 4 n/an/a n/a Did a power inline never power inline auto-- Fa1/0/33 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47
Re: [WIRELESS-LAN] WAPS seem to die after switch reboot
Got it, just did it per port-- same thing On 1/11/2012 3:51 PM, Lee H Badman wrote: For clarity- the power commands I referenced are port by port, not global. -Lee -Original Message- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Vikki Cutrone Sent: Wednesday, January 11, 2012 3:50 PM To:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] WAPS seem to die after switch reboot Hi, They are down/down never to come on line again. This is a show power inline-- Fa1/0/33 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Module Available Used Remaining (Watts) (Watts)(Watts) -- - - 1 370.0 231.0 139.0 2 n/an/a n/a 3 n/an/a n/a 4 n/an/a n/a Did a power inline never power inline auto-- Fa1/0/33 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Samm result On 1/11/2012 3:32 PM, David Pita wrote: Do a show power inline | i AP, this will filter out the APs on the power inline output. Verify that they are all there, then check cdp details on each port to make sure they have an IP. David Pita Wireless Network Engineer UTS Network Management Services Florida International University 305.348.3658 On 01/11/2012 02:39 PM, Vikki Cutrone wrote: Hello, I am running multiple Cisco 4404 controllers Vers-7.0.116 and the majority of the WAPS are CAPWAP 1131's . The issue I seem to be having is that lately when I reboot an access layer switch, POE, 3750 series, with WAPS attached, I lose some of the WAPS. The WAPS never come back on line again and appear to be dead. They were completely operational prior to the reboot, but after reloading the switch, no switch configuration changes, the WAPS never come back on line. I have shut/no shut the interfaces of the switch, and the switches POST seems fine. Just wondering if anyone else has seen this issue, I have lose about 30 WAPS so far. Thanks!! Vikki Cutrone Network Admin Vassar College ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found athttp://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found athttp://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
RE: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi
The consumer market loves new technology, and since this standardizes on the 5GHz band only, it is my best friend. Most of the RF problems we have is because too many computers are perfectly happy working on N on the 2.4 GHz range, yet there are too many legacy devices and mobile devices to cut off that band. The freedom of having so many NON-OVERLAPPING channels to play with is GREAT! Having the high bandwidth overhead is wonderful, especially since wireless technology has a high loss overhead. Remember how many packets get transmitted that aren't actually payload. However they are increasing the amount of bandwidth by reducing the number of channels. This really screws enterprises, apartment complexes, and, well, anywhere with a high concentration of access points. Again, this is not the technology of the future. This will take us one step closer, but ultimately the channels and airwaves will saturate again before the next decade and we will be back to the drawing board again. We need more channels AND more bandwidth, not one or the other for it to be truly future-ready. -- Andy Voelker Manager of Student Computing in the Technology Commons Western Carolina University Be sure to check out the WCU TechTips Podcast at http://www.youtube.com/WesternCarolinaU!! Check the status of your IT requests at any time at http://help.wcu.edu/ ! From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jeffrey Sessler Sent: Wednesday, January 11, 2012 3:04 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi An auditorium with an 8-antenna 802.11ac AP running a 160Mhz channel, with nearly 7Gbps aggregate bandwidth, sounds pretty interesting to me. We have faculty that have students downloading a lot of information during class, so even in smaller 12-25 person classrooms, the added bandwidth means less time it getting the information, and more time spent teaching. I also suspect that Apple will adopt the new standard in their laptops and desktops, so there is the chance you'll see 802.11ac capable devices within the next 12 months, and given that Apple's student share here at my campus is now ~75%, that translates into a lot of 802.11ac capable devices. Jeff On Tuesday, January 10, 2012 at 12:35 PM, in message 943da0e70434ca499ad0088fb90eaade0e5...@suex10-mbx-05.ad.syr.edumailto:943da0e70434ca499ad0088fb90eaade0e5...@suex10-mbx-05.ad.syr.edu, Lee H Badman lhbad...@syr.edumailto:lhbad...@syr.edu wrote: Just as important as the high throughput is the better quality cells, the ability of MIMO to handle multipath, band steering and other features that make for a better radio cell with 11n. Wide channels in 5 GHz for 11n are a safe bet- there is usually enough channels to burn 40 MHz without penalty. But 80 MHz and 160 MHz for 11ac 500 Mbps and Gig speeds? Sounds more consumer-oriented than enterprisey right now to me. Lee H. Badman Wireless/Network Engineer Information Technology and Services Adjunct Instructor, iSchool Syracuse University 315 443-3003 From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]mailto:[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Rick Brown Sent: Tuesday, January 10, 2012 3:01 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Betr.: [WIRELESS-LAN] Gigabit Wi-Fi While the high speeds may not be necessary, perception is reality. They will be demanded because the capability is there! IMHO in the 5GHz world there are enough channels to handle bonding them! And...if you make the bandwidth available somebody will use it! Sent from my iPhone On Jan 10, 2012, at 2:42 PM, Eric W. LaCroix elacr...@newhampton.orgmailto:elacr...@newhampton.org wrote: I am not a wireless network engineer by any stretch of the imagination. However, I do love analogies... and to me, taking up two lanes on an existing highway to let one lane of traffic drive faster does seem somewhat shortsighted. My second point is related to Heath's excellent question: are these high speeds really necessary? At least on my campus, the drive for wireless is to give users reliable access to the Internet. Since we will not have enough bandwidth in the foreseeable future to have 802.11n WiFi be the bottleneck, I am quietly wondering how necessary this kind of upgrade would be for us. Eric __ Eric LaCroix, Director of Technology, New Hampton School 70 Main Street * New Hampton, NH 03256 603-677-3450 phone fax The EDUCAUSE Wireless Issues Constituent Group Listserv WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU writes: This is a multi-part message in MIME format. --Boundary_(ID_dKTAId9Hqbr2otAyVMLbKw) Content-type: text/plain;
RE: [WIRELESS-LAN] WAPS seem to die after switch reboot
Are these 1131's LWAPP from the factory or did you convert these in the field from autonomous to LWAPP / CAPWAP? We have found that some of our converted 1230 series APs do this and show the same IEEE PD message on the switch. We had to go onsite or bring them back to the office to reload the autonomous image, convert it back to LWAPP, connect it to a controller and let them download the CAPWAP software version again. This would fix our issue which seemed to be a corrupted image. For the most part every failed AP image was preceded by some power event such as a power outage. -Jimmy James Helzerman Wireless Network Engineer University of Michigan ITS Communications Systems and Data Centers 4251 Plymouth Road, Building 2, #2224 Ann Arbor, Michigan 48105 Phone: 734-615-9541 Cell: 734-972-5095 -Original Message- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Vikki Cutrone Sent: Wednesday, January 11, 2012 4:06 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] WAPS seem to die after switch reboot Got it, just did it per port-- same thing On 1/11/2012 3:51 PM, Lee H Badman wrote: For clarity- the power commands I referenced are port by port, not global. -Lee -Original Message- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Vikki Cutrone Sent: Wednesday, January 11, 2012 3:50 PM To:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] WAPS seem to die after switch reboot Hi, They are down/down never to come on line again. This is a show power inline-- Fa1/0/33 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 12.2AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Module Available Used Remaining (Watts) (Watts)(Watts) -- - - 1 370.0 231.0 139.0 2 n/an/a n/a 3 n/an/a n/a 4 n/an/a n/a Did a power inline never power inline auto-- Fa1/0/33 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/34 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/35 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/36 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/37 auto on 15.4Ieee PD 3 15.4 Fa1/0/38 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/39 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/40 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/41 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/42 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/43 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/44 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/45 auto on 15.4AIR-LAP1131AG-A-K9 3 15.4 Fa1/0/46 auto on 15.4Ieee PD 3 15.4 Fa1/0/47 auto on 15.4Ieee PD 3 15.4 Samm result On 1/11/2012 3:32 PM, David Pita wrote: Do a show power inline | i AP, this will filter out the APs on the power inline output. Verify that they are all there, then check cdp details on each port to make sure they have an IP. David Pita Wireless Network Engineer UTS Network Management Services Florida International University 305.348.3658 On 01/11/2012 02:39 PM, Vikki Cutrone wrote: Hello, I am running multiple Cisco 4404 controllers Vers-7.0.116 and the majority of the WAPS are CAPWAP 1131's . The issue I seem to be having is that lately when I reboot an access layer switch, POE, 3750 series, with WAPS attached, I lose some of the WAPS. The WAPS never come back on line again and appear to be dead. They were completely operational prior to the reboot, but after reloading the switch, no switch configuration changes, the WAPS never come back on
Pinging I-Devices
Has anyone come across any solid explanation of why iphones, ipads, and ipod touches all seem to respond poorly to simple ping tests in terms of latency? Just pinging an ipad across a local home network yields horrible results e.g. bjp$ ping 10.0.1.14 PING 10.0.1.14 (10.0.1.14): 56 data bytes 64 bytes from 10.0.1.14: icmp_seq=0 ttl=64 time=83.143 ms 64 bytes from 10.0.1.14: icmp_seq=1 ttl=64 time=105.490 ms 64 bytes from 10.0.1.14: icmp_seq=2 ttl=64 time=29.204 ms 64 bytes from 10.0.1.14: icmp_seq=3 ttl=64 time=46.337 ms 64 bytes from 10.0.1.14: icmp_seq=4 ttl=64 time=172.870 ms 64 bytes from 10.0.1.14: icmp_seq=5 ttl=64 time=93.284 ms 64 bytes from 10.0.1.14: icmp_seq=6 ttl=64 time=114.715 ms 64 bytes from 10.0.1.14: icmp_seq=7 ttl=64 time=39.345 ms 64 bytes from 10.0.1.14: icmp_seq=8 ttl=64 time=60.012 ms whereas pinging a wireless laptop client on the same network is fine. Thanks, BJ Pinsky New York Presbyterian Hospital This electronic message is intended to be for the use only of the named recipient, and may contain information that is confidential or privileged. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of the contents of this message is strictly prohibited. If you have received this message in error or are not the named recipient, please notify us immediately by contacting the sender at the electronic mail address noted above, and delete and destroy all copies of this message. Thank you. This electronic message is intended to be for the use only of the named recipient, and may contain information that is confidential or privileged. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of the contents of this message is strictly prohibited. If you have received this message in error or are not the named recipient, please notify us immediately by contacting the sender at the electronic mail address noted above, and delete and destroy all copies of this message. Thank you. This electronic message is intended to be for the use only of the named recipient, and may contain information that is confidential or privileged. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of the contents of this message is strictly prohibited. If you have received this message in error or are not the named recipient, please notify us immediately by contacting the sender at the electronic mail address noted above, and delete and destroy all copies of this message. Thank you. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Pinging I-Devices
Brandon, I'm pasting a link to a Mac forum thread. If you read almost down to the bottom, it seems to explain the issue that you are seeing. In short, it seems to be a power-save feature. If you ping the device while it's idle, you get delayed ping times. If you ping it while it's actively using the wi-fi connection (such as while downloading something), the ping times should drop. http://forums.macrumors.com/showthread.php?t=477141 Sent from my iPhone, __ __ Fishel Erps cell: 347-539-6380 fax: 732-626-6532 __ __ On Jan 11, 2012, at 21:10, Brandon Pinsky brp9...@nyp.org wrote: Has anyone come across any solid explanation of why iphones, ipads, and ipod touches all seem to respond poorly to simple ping tests in terms of latency? Just pinging an ipad across a local home network yields horrible results e.g. bjp$ ping 10.0.1.14 PING 10.0.1.14 (10.0.1.14): 56 data bytes 64 bytes from 10.0.1.14: icmp_seq=0 ttl=64 time=83.143 ms 64 bytes from 10.0.1.14: icmp_seq=1 ttl=64 time=105.490 ms 64 bytes from 10.0.1.14: icmp_seq=2 ttl=64 time=29.204 ms 64 bytes from 10.0.1.14: icmp_seq=3 ttl=64 time=46.337 ms 64 bytes from 10.0.1.14: icmp_seq=4 ttl=64 time=172.870 ms 64 bytes from 10.0.1.14: icmp_seq=5 ttl=64 time=93.284 ms 64 bytes from 10.0.1.14: icmp_seq=6 ttl=64 time=114.715 ms 64 bytes from 10.0.1.14: icmp_seq=7 ttl=64 time=39.345 ms 64 bytes from 10.0.1.14: icmp_seq=8 ttl=64 time=60.012 ms whereas pinging a wireless laptop client on the same network is fine. Thanks, BJ Pinsky New York Presbyterian Hospital This electronic message is intended to be for the use only of the named recipient, and may contain information that is confidential or privileged. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of the contents of this message is strictly prohibited. If you have received this message in error or are not the named recipient, please notify us immediately by contacting the sender at the electronic mail address noted above, and delete and destroy all copies of this message. Thank you. This electronic message is intended to be for the use only of the named recipient, and may contain information that is confidential or privileged. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of the contents of this message is strictly prohibited. If you have received this message in error or are not the named recipient, please notify us immediately by contacting the sender at the electronic mail address noted above, and delete and destroy all copies of this message. Thank you. This electronic message is intended to be for the use only of the named recipient, and may contain information that is confidential or privileged. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of the contents of this message is strictly prohibited. If you have received this message in error or are not the named recipient, please notify us immediately by contacting the sender at the electronic mail address noted above, and delete and destroy all copies of this message. Thank you. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
