topic Re: 1920 boot issue in Wireless

1920 boot issue

Mariusz00001 — Mon, 21 Oct 2024 01:01:02 GMT

The AP boots up - I connect a console cable and I can see the logo of u-boot and then weird characters. Image broken? That was running an EWC image without problems, rebooted it one day and that's it...

What's interesting, I can see (using CDP) that after a bootup, AP gets an IP from a DHCP server but I cannot ssh/hthtps to it and it is not broadcasting any SSIDs, no provisioning SSID, either.

I tried to get into the recovery mode. I rebooted the AP, u-boot logo appears, I press ESC - nothing happens. Tested on two PCs with putty and securecrt. Any ideas what to do next?

Re: 1920 boot issue

Flavio Miranda — Mon, 21 Oct 2024 01:14:36 GMT

@Mariusz00001

Make sure the console is using baudrate of 115200 bps

Re: 1920 boot issue

Leo Laohoo — Mon, 21 Oct 2024 02:54:38 GMT

If the AP is booting into 17.12.X (and later), change the baud rate to 115200.

Re: 1920 boot issue

Rich R — Mon, 21 Oct 2024 07:20:14 GMT

This has been discussed twice on other threads in the last few days (and many before that)! Please search for existing posts before asking the same question again.
https://community.cisco.com/t5/wireless/9120axe-console-give-me-only-symbols-after-a-reboot/m-p/5211711#M276769
https://community.cisco.com/t5/wireless/cisco-access-point-9130axe-cli-unusual-language/m-p/5211688#M276766

FYI: this change was introduced by https://bst.cisco.com/bugsearch/bug/CSCwe88390

This is documented in https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/technical-reference/c9800-best-practices.html#AccessPointConsoleBaudRate so it's a good idea to go through that Best Practices guide.