2911 Run config was saved while power reboot...

[Mikhail Chernyakov]

Hello all!

I have Cisco2911

I applied wrong access list to interface, and lost connections via ssh. I powered off 2911 and powered on.

Connection via ssh was not restored...

I connected router via console cable and found what my changes saved at start config...

How it can be done?

I  tried past following config by block:

interface GigabitEthernet0/0
 no ip access-group from_elion_sip in
 exit
 
no ip access-list extended from_elion_sip
ip access-list extended from_elion_sip
 permit udp host ...

...
 permit udp  host 88.196.1.34 host 195.250.168.182
 
 
 

 interface GigabitEthernet0/0
ip access-group from_elion_sip in
 exit

as result

EST01-GPN-MB-R01(config)interface GigabitEthernet0/0
EST01-GPN-MB-R01(config-if)#no ip access-group from_elion_sip in
EST01-GPN-MB-R01(config)exit
EST01-GPN-MB-R01(config)
EST01-GPN-MB-R01(config)#no ip access-list extended from_elion_sip
EST01-GPN-MB-R01(config)#ip access-list extended from_elion_sip
EST01-GPN-MB-R01(config-ext-nacl)# permit udp host 195.250.168.182 host 88.196.1.34
....

EST01-GPN-MB-R01(config-ext-nacl)#
EST01-GPN-MB-R01(config-ext-nacl)#
EST01-GPN-MB-R01(config-ext-nacl)#
EST01-GPN-MB-R01(config-ext-nacl)#
EST01-GPN-MB-R01(config-ext-nacl)# interface GigabitEthernet0/0
EST01-GPN-MB-R01(config-if)#ip access-group from_elion_sip in
EST01-GPN-MB-R01(config-if)# e

After reboot config was saved at start... how it can be done?

[Mark Malone]

How did you reboot it, the only way I could see that happen is if you typed reload and hit y by mistake when the below comes up

6509Sup720#reload

System configuration has been modified. Save? [yes/no]:

If you hard rebooted then not sure don't see how it could save without actually doing it
 

[Mikhail Chernyakov]

Router rebooted by power off...

Access to cli was lost immediately after ACL applied

Router installed at remote location. Local personal tried to reboot router using power button.

After what I connect to router console and found what power time is several minutes and ACL saved at start...

[Mark Malone]

That doesn't make sense routers don't automatically save config it needs to be written to flash , did you collect any extracts from the router when you consoled in

[Mikhail Chernyakov]

please be carefully...

It is abnormal behavior...

We have logging from console

We have logging all run and start changes until ACL applied...

no write, copy run start  command was applied...

but after reboot startup config include new command...

The question is how it can be done...

May be 2911 has any procedure to save config while power off...

For exampe: press and hold power button 10 seconds...