topic Re: C9800 Physical Hardware in Wireless

C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 07:15:32 GMT

Good day, all,

I have a C9800 physical hardware - Is it normal for one of the LED lights to be RED? I have attached a photo. The LED has an alarm symbol. I have configured the WLC but after setting the console password, I am unable to login using the configured console password. Even with the configured local username and password, the console does not take it.

I have attached the photo of the LED and the current WLC config.

Re: C9800 Physical Hardware

Leo Laohoo — Tue, 11 Jun 2024 07:24:21 GMT

Please share the output to the following commands:

sh version sh post sh environment alarm

Re: C9800 Physical Hardware

Mark Elsen — Tue, 11 Jun 2024 07:34:52 GMT

- Check the output from : show facility-alarm status

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 08:38:14 GMT

Hi @Leo Laohoo

I will share the output in the next 2 hours - thanks

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 08:39:23 GMT

Hi @Mark Elsen

Will do thanks.

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 10:21:05 GMT

@Mark Elsen

WLC#show facility-alarm status
System Totals Critical: 6 Major: 0 Minor: 0

Source Time Severity Description [Index]
------ ------ -------- -------------------

TwoGigabitEthernet0/0/0 Jan 05 2018 16:40:59 CRITICAL Physical Port Link Down [1]

TwoGigabitEthernet0/0/1 Jan 05 2018 16:40:59 CRITICAL Physical Port Link Down [1]

TwoGigabitEthernet0/0/2 Jan 05 2018 16:40:59 CRITICAL Physical Port Link Down [1]

TwoGigabitEthernet0/0/3 Jan 05 2018 16:40:59 CRITICAL Physical Port Link Down [1]

TenGigabitEthernet0/1/0 Jan 05 2018 16:40:59 CRITICAL Physical Port Link Down [1]

TenGigabitEthernet0/1/1 Jan 05 2018 16:40:59 CRITICAL Physical Port Link Down [1]

WLC#

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 10:29:31 GMT

@Leo Laohoo

Please see attached, show post and show environment alarm is said to be invalid.

Re: C9800 Physical Hardware

Mark Elsen — Tue, 11 Jun 2024 10:39:15 GMT

Hm ,as far as these ports are concerned ; guess normal if they are not in use and or can these connections be used effectively , for instance ?
For the console problem : you say you are unable to login , what does that translate info exactly : authentication error , or other ?
Also check the controller logs when trying to login using the console (?)

Re: C9800 Physical Hardware

Leo Laohoo — Tue, 11 Jun 2024 10:58:26 GMT

@tppatrick1 wrote:
Configuration register is 0x2142

That's interesting.

Re: C9800 Physical Hardware

Mark Elsen — Tue, 11 Jun 2024 11:00:23 GMT

- @Leo Laohoo That's interesting.
Could you enlighten us why Leo = much appreciated!

Re: C9800 Physical Hardware

Leo Laohoo — Tue, 11 Jun 2024 11:12:17 GMT

Config Registry 0x2142 means the router or WLC will ignore the config and boot into ROMMON.

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 12:15:59 GMT

@Leo Laohoo

The config register was 0x2142 because I took these outputs attached while I was recovering the console password. I have configured it back to 0x2002. As I mentioned earlier, every time I configure the console password, I am unable to login via the console as it rejects the configured password. I am not sure why, so for me to give you the outputs that you requested, I had to recover the password first

Thank you

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 12:21:28 GMT

@Mark Elsen

Yes, the interfaces should be working, though I haven't plugged anything into them. I think what we are seeing on the alarm status is because nothing is plugged into the ports.

Re: C9800 Physical Hardware

eglinsky2012 — Tue, 11 Jun 2024 12:33:13 GMT

On our 9800-80s, if any of the physical network interfaces are administratively up and operationally down, the light will be red. The alarms you posted seem to indicate this. Shutdown/disable any unused uplink ports and the alarm light should turn green if there aren’t other issues. In this case, it looks like you’re not using any of them yet, so you’ll have to shutdown/disable them all.

Re: C9800 Physical Hardware

Mark Elsen — Tue, 11 Jun 2024 12:41:38 GMT

- Probably but test the or one interface anyway , and check how that
influences the alarm led status,

M.

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 12:57:35 GMT

@eglinsky2012

Thank you. I understand what about the console password; why does it reject the configured password? any idea?

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 13:23:25 GMT

@Mark Elsen

Sure, I will do so and confirm. Thank you

Re: C9800 Physical Hardware

Mark Elsen — Tue, 11 Jun 2024 13:59:53 GMT

>... why does it reject the configured password? any idea?
- Depends , start by examining the controller logs after a console authentication is tried. Sometimes AAA setups are not correctly setup for the local console line , expecting a local authentication to be available (first).
It's always useful to have an overall checkup of the controller configuration with the CLI command
show tech wireless and feed the output from that into Wireless Config Analyzer

Re: C9800 Physical Hardware

tppatrick1 — Tue, 11 Jun 2024 14:18:07 GMT

@Mark Elsen

Below is what I have under the AAA

aaa new-model
aaa local authentication AD_AUTH authorization AD_AUTH

Re: C9800 Physical Hardware

Mark Elsen — Tue, 11 Jun 2024 14:26:25 GMT

- Ok , as stated check controller logs , just after an authentication attempt is done through the console
- Post the running config of the console line
- Execute the WirelessAnalyzer procedure as I explained in my previous reply ,