dns-server /dhcp pool

Hi,

I wonder if i may run a few questions past you guys. We have a Cisco 1700 at one of our sites which is supposed to be managed but due to problems with the third party company i had to go there to perform some work.

I wanted to add in a dns server ip. Because i don't have the enable secret (Third PTY won't tell us) i used the break command normally used for password recovery. then once in used "copy start run".

Q. can i make config changes this way, save the changes then switch the config-register back and reload?

I managed to make the changes - Dhcp pool - dns-server ip's, right? changed the config-reg back and reloaded. No connectivity. anyway i messed around with different ip's eventually put it back to to original powered of for 5 mins and on again and it was ok.

Q: have i missed something out?

Q: could reloading or powering off and on to quickly affect thigs?

Q: Could the router be downloading it's config or something additional from a TFTP server? Is there anything i can check to confirm this on the config?

This is the dns part of the config all i want to do is change 1.0.84.187 for 84.33, should be simple?

ip dhcp pool 0
network 172.16.0.0 255.255.0.0
default-router 172.16.0.15
dns-server 1.0.84.8 1.0.84.187 158.152.1.43 158.152.1.58
domain-name parkside.net
lease infinite

Q: Is this part saying that 1.0.84.187 and 158.152.1.43 are not being used for dns?

no ip domain lookup
ip name-server 1.0.84.187
ip name-server 158.152.1.43
ip cef
no scripting tcl init
no scripting tcl encdir

Sorry i know thats long winded. Any help on any part of my problem would be much appreciated.

Kind regards
J mac

Q. can i make config changes this way, save the changes then switch the config-register back and reload?

Yes.

I managed to make the changes - Dhcp pool - dns-server ip's, right? changed the config-reg back and reloaded. No connectivity. anyway i messed around with different ip's eventually put it back to to original powered of for 5 mins and on again and it was ok.

Q: have i missed something out?

No as per your description.

Q: could reloading or powering off and on to quickly affect thigs?

Just a coincidence i would say.

Q: Could the router be downloading it's config or something additional from a TFTP server? Is there anything i can check to confirm this on the config?

Not sure if there is any such command that id ont know of.

This is the dns part of the config all i want to do is change 1.0.84.187 for 84.33, should be simple?

ip dhcp pool 0
network 172.16.0.0 255.255.0.0
default-router 172.16.0.15
dns-server 1.0.84.8 1.0.84.187 158.152.1.43 158.152.1.58
domain-name parkside.net
lease infinite

Q: Is this part saying that 1.0.84.187 and 158.152.1.43 are not being used for dns?

Sorry, no idea about this one.

Hope to see replies from others regarding the same...

Hey thanks a lot for the speedy reply that's really helpful. Hopefully others may be able to shed a little on the latter part.