disable standby console enable

[chemban_2015]

Hi,


How to disable  standby console enable

Switch(config)# redundancy
Switch(config-red)# main-cpu
Switch(config-r-mc)# standby console enable
Switch#


Thanks 

[Mark Malone]

hey You have 2 sups or vss and your trying to disable the standby is that correct ?

The standby should only become valid on a 6500 when your active is dead , is there a reason your trying to disable it

Its this anyway its hidden command so may not show

no standby console enable

[chemban_2015]

Hi,

I have a problem in my stack 3850 , i cannot login to console .

But i am not sure it is already configured . How can i see if it is already configured

Thank you 

[Mark Malone]

Ok in a stack connect to the master for console access ,

Looks at the stack only one switch should have an LED showing master light up , connect into that console port

This is for 6500s and sups not 3850s no standby console enable

[chemban_2015]

HI

The problem , due to some issue i cannot connect the console to the master . so i was thinking to connect to standby if i enable "standby console enable"

Thanks

[Mark Malone]

How are you going to set that though if theres no access over console , have you access over the vty ?

what does your show redundancy output give ?

[chemban_2015]

Hi,

Problem description :

Suddenly remote login stoppes ssh or telnet , still console access there (active led constant) .So i got chance to run the following command .
When i run " sh run " seems console hang .

Then i connected standby console (active led keep blinks),
there iam getting below messages

"console is now available

Press RETURN to get started."

Now i don't have any access to the switch

Sw1#sh redundancy
Redundant System Information :

------------------------------
Available system uptime = 26 weeks, 10 hours, 3 minutes
Switchovers system experienced = 0
Standby failures = 0
Last switchover reason = not known

Hardware Mode = Duplex
Configured Redundancy Mode = SSO
Operating Redundancy Mode = SSO
Maintenance Mode = Disabled
Communications = Up

Current Processor Information :
------------------------------
Active Location = slot 1
Current Software state = ACTIVE
Uptime in current state = 36 weeks, 10 hours, 3 minutes
Image Version = Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.03.05SE RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Thu 30-Oct-14 13:12 by prod_rel_
BOOT = flash:packages.conf
Configuration register = 0x102

Peer Processor Information :
------------------------------
Standby Location = slot 2
Current Software state = STANDBY HOT
Uptime in current state = 36 weeks, 9 hours, 59 minutes
Image Version = Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.03.05SE RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Thu 30-Oct-14 13:12 by prod_rel_
BOOT = flash:packages.conf
Configuration register = 0x102

sh switch
Switch/Stack Mac Address : - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
------------------------------------------------------------
*1 Active 8890 15 V04 Ready
2 Standby 8890 14 V04 Ready
3 Member 8890 13 V04 Ready
4 Member 40a6 12 V04 Ready
5 Member 8890 11 V04 Ready

Thank you 

[Mark Malone]

Hi

Is console on master switch still down , still hung  ?

If you don't have access even by console it sounds as if some process has jammed up the cpu , there is no way around that but reboot to clear the processes/issue and then run something like an eem script to try and capture what's happening while the issue occurs

Is there any service effect to this yet other than your access ? ssh/telnet and console needs to  be rebooted

Do you have any 3rd party  software monitoring the switch to give any indication or syslog what might be causing the issues

[chemban_2015]

Hi ,

I  am using cisco prime for monitoring , but it did not give any indication of the problem .It did not effect any services except we cannot login it . 

Thanks

[Mark Malone]

Yes ok that's strange Prime did not report anything , can you see the device in Prime in monitor inventory section you should be able to see what the cpu is currently at ?

Its most likely a bug or the cpu is maxed out and its dropped access

If no method is available (console / vty / ssh.telent ) to access the stack you will need to reboot to clear the process or bug temporarily until you can see exactly whats causing it

[chemban_2015]

Hi,

from prime i am getting collection failure .When i tried to open i am getting the below msgs 

Error :Cli connection device failed 

[Mark Malone]

so prime has lost access to the stack as well , without access, any type of monitoring available to see what happened , to get it back online fully you will need to reboot it

[chemban_2015]

Hi,

I have rebooted full stack .Now i don't know what happpend . There is some hardware  version mismatch 

* 1 56 WS-C3850-48P 03.03.05SE cat3k_caa-universalk9 INSTALL
2 56 WS-C3850-48P 03.03.05SE cat3k_caa-universalk9 INSTALL
3 56 WS-C3850-48P 03.03.05SE cat3k_caa-universalk9 INSTALL
4 56 WS-C3850-48P 03.03.05SE cat3k_caa-universalk9 INSTALL
5 56 WS-C3850-48P 03.03.05SE cat3k_caa-universalk9 INSTALL

sh switch
Switch/Stack Mac Address : 8890.80 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
------------------------------------------------------------
*1 Active 8890..x.x.x.x 15 V04 Ready
2 Standby 8890.8d18.x.x.x.x 14 V04 Ready
3 Member 8890.8d18.x.x.x.x 13 0 Ready
4 Member 40a6.x.x.x.x.x.x.x.x 12 V04 Ready
5 Member 8890.8d07.x.x.x.x 11 0 Ready

sh switch stack-ring speed

Stack Ring Speed : 480G
Stack Ring Configuration: Full
Stack Ring Protocol : StackWise

Thanks 

[Mark Malone]

Hey

so now after reboot your  console and ssh access is back working ?

stack ring is in full mode full bandwidth from your post looks good , what exactly are you seeing as an issue show switch looks ok too stack is formed fully active/standby and your members ?

[Mark Malone · Accepted solution]

If its the 0 and V04 your concerned about that's not an issue ,, the stack is still fully formed and in ready state and all running same ios which the most important thing