I have two Cisco 2960 switches will they act as dumb switches if reset to default

I have two Cisco 2960 switches will they act as dumb switches if reset to default. I would like to set them up to work together to allow 30 or so dhcp connections.
RussSr. IT TechnicianAsked:
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Don JohnstonInstructorCommented:
>I have two Cisco 2960 switches will they act as dumb switches if reset to default.

Yes they can act as a dhcp Server. you can connect the two of them via network cable and configure DHCP like this

conf t
ip dhcp pool Network
  network (The Network id which you want to use)
 default-router (The default Gateway(Ip of your router/etc)
  dns-server x.x.x.x (your dns server)

this dhcp server will work for both the switches. Further if you want to exclude and IP

ip dhcp exclude-address x.x.x.x
Yes, if you set to factory default they are just dumb layer 2 switches.

nasirsh - no you cannot set up this 2960 switch as a DHCP server. It is L2 only and it requires L3 to support DHCP.

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RussSr. IT TechnicianAuthor Commented:
Here is what I am looking at, I have a Cisco 515 pix handing out dhcp on /24 you can connect and surf thru the pix, so that is all working. I currently have a wireless router setup to the pix so the switch's could just run dumb as passthru from here (letting the router run dhcp) or from the pix. My boss hands me two previously configured/used 2960 cat swiches that they do not have passwords for and they want to use these as dumb switches to connect 30-40 workstations all pulling via dhcp. As far as I am aware without passwords to get to priv mode these switch's can't be set back to factory defaults (is this true or is there a way?)? Anyone have any ideas on solving this situation? Please keep in mind they (boss) wants to use these 2960's in the worst way as to get his return on his expenditure.

Don JohnstonInstructorCommented:
You'll have to do a password recovery and then delete the config.

Here's the procedure for recovering a lost password:

RussSr. IT TechnicianAuthor Commented:
Thanks again all for all your input and help on this matter. Here is what I found, the 2960 can get it's ip via dhcp but not using the older 12.2 IOS. In 12.2 IOS the switches if reset to default will not act as passtrhu switches even though this would have been great in this instance. These had to have a static ip assigned and Vlan1 conf to pass ip's. Funny part was the dhcp commands were present and accepted but on at least this older IOS wasn't happening. The switch just wouldn't pull an ip from the router. Password recovery very helpful and on the money, lots of stuff there that Cisco puts in there for reading fun >basically it's this:

2960 24TT L V02 Cat Switch Pass recovery
Hyperterm connected power switch holding down mode button
syst willl flash green then amber then fast flashing green let mode button go
Goes to switch prompt
rename flash:config.text flash:config.old
And it's back top default and ready to config in about 5 mins.
Never had to do a recovery as most folks don't through out their password list when the pull equipment or the switch is racked and live.  
Thanks Don, Irmoore, Nasirsh for all your help and assistance really helpful.

RussSr. IT TechnicianAuthor Commented:
Don JohnstonInstructorCommented:
>In 12.2 IOS the switches if reset to default will not act as passtrhu switches

>These had to have a static ip assigned and Vlan1 conf to pass ip's.


Can you post where you found this information?
RussSr. IT TechnicianAuthor Commented:
I set my switches back to default and could not connect to the internet thru them until I did basic configs on them. The switch would also not pull a dhcp ip from the router as well and had to be static'd. As for the specific "Cisco ref" I will try to look and see what they say. I am just relating my experience. I appreciate your help and assistance and the comments on this and other questions I have asked in the past.

Don JohnstonInstructorCommented:
Interesting... Every 2900 series switch I've ever setup will forward traffic with no config.

As for pulling an IP address, that does require a minimum IOS version as you noted.
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