Here is the dump from an AP with a corrupt boot loader after software upgrade/power cycle. Symptoms of the unit having this problem are no console output after BootROM: Image checksum verificaiton FAILED and no status LED lighting up. On the switch at my desk (WS-C2960CX-8PC), if you plug in the AP, you get no link light, but from cli you see that power is negotiated and drawn to the AP.
BootROM - 1.78 Booting from SPI flash, Secure mode BootROM: RSA Public key verification PASSED BootROM: CSK block signature verification PASSED BootROM: Boot header signature verification PASSED BootROM: Box ID verification PASSED BootROM: JTAG is disabled General initialization - Version: 1.0.0 Detected Device ID 6920 Master bootloder version 1.22 High speed PHY - Version: 2.0 BoardId = 0x21board SerDes lanes topology details: | Lane # | Speed| Type | ------------------------------| | 1 | 0 | SGMII1 | | 2 | 5 | PCIe1 | | 4 | 5 | PCIe2 | | 5 | 0 | SGMII2 | ------------------------------- :** Link is Gen1, check the EP capability PCIe, Idx 1: Link upgraded to Gen2 based on client cpabilities :** Link is Gen1, check the EP capability PCIe, Idx 2: Link upgraded to Gen2 based on client cpabilities High speed PHY - Ended Successfully DDR4 Training Sequence - Ver TIP-0.23.(Sublib 0.8)0 DDR4 Training Sequence - Switching XBAR Window to FastPath Window DDR4 Training Sequence - Ended Successfully BootROM: Image checksum verification FAILED On Fri, Aug 17, 2018 at 3:45 PM, Jeffrey D. Sessler <j...@scrippscollege.edu > wrote: > You may not get link/activity until the AP's interface comes up, but the > AP may still be requesting power and booting. I'd get one attached to a > console cable and see what happens. If you're using a Cisco switch, the > "show power inline" command will tell you if power is being > supplied/requested. > > Jeff > > On 8/17/18, 11:17 AM, "The EDUCAUSE Wireless Issues Constituent Group > Listserv on behalf of Sam Ziadeh" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU on > behalf of szia...@lsu.edu> wrote: > > POE switch (non cisco). We did take some of the failed units and > plugged them into a Cisco POE switch to rule out a switch issue. > > We did not check the console port of the AP, but the port on the > switch was not lighting up either. > > -Sam > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Jeffrey D. Sessler > Sent: Thursday, August 16, 2018 7:59 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: Re: [WIRELESS-LAN] Cisco AP2800 failure rate > > I’ve got a metric ton of 3800’s and 2800’s spanning FCS (first > customer ship) to less than a month old and have had zero failures. > > > > I agree with one of the other posters that even with no lights > displayed, there can be action on the console port. > > > > Was the initial failure when connected to a POE switch or using an > injector? Cisco switches/injectors or third-party? > > > > Jeff > > > > From: "wireless-lan@listserv.educause.edu" <WIRELESS-LAN@LISTSERV. > EDUCAUSE.EDU> on behalf of Sam Ziadeh <szia...@lsu.edu> > Reply-To: "wireless-lan@listserv.educause.edu" <WIRELESS-LAN@LISTSERV. > EDUCAUSE.EDU> > Date: Thursday, August 16, 2018 at 7:39 AM > To: "wireless-lan@listserv.educause.edu" <WIRELESS-LAN@LISTSERV. > EDUCAUSE.EDU> > Subject: [WIRELESS-LAN] Cisco AP2800 failure rate > > > > Is anyone else seeing a high rate of Cisco AP 2800 failures? Out of a > batch of ~500 recently installed Aps, we have had roughly 70 fail. Some > were online for a month, but some only a few days. > > Typically they will fail after a powercycle or loss of power. > We are working with Cisco on this, but I’m curious if this is a more > wide spread problem. > > > > ------------------------------------------------------------- > > Sam Ziadeh > > Manager, Network Engineering & Architecture > > University Networking & Infrastructure > > Information Technology Services > > Louisiana State University > > (225) 578-0074 > > szia...@lsu.edu <mailto:szia...@lsu.edu> > > > > ********** Participation and subscription information for this > EDUCAUSE Constituent Group discussion list can be found at > http://www.educause.edu/discuss. > > ********** Participation and subscription information for this > EDUCAUSE Constituent Group discussion list can be found at > http://www.educause.edu/discuss. > > > ********** > Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at http://www.educause.edu/ > discuss. > > > > > ********** > Participation and subscription information for this EDUCAUSE Constituent > Group discussion list can be found at http://www.educause.edu/discuss. > > -- Alan Wang Network Analyst Binghamton University aw...@binghamton.edu ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
