02-03-2012 10:09 AM - edited 03-07-2019 04:43 AM
Greetings,
I am trying to find out if its possible to use an existing CISCO 2940 Switch that we have here at our office as a hub? Im sure that borders on insane however, let me break down what we have currently and what I'd like to do.
We currently have a very nice setup here at work, with no problems whatsoever, however; we hired a new person and brought in some new printers and we are running out of wall jacks. Rather then run all new cabling and adding new outlets/faceplates etc... We were just gonna go purchase a simple Netgear 5 port switch/hub from the Local Comp store here in town. We found in our server room a what appears to fully functional and operational cisco 2940 8 Port Switch with a Gigabit port.
All IPs in the office are assigned via DHCP, so....on to the meat of my question -- I tried to plug this into our network and I can't get any connectivity out at all. All the ports light up green etc when I plug in the comps but they aren't pulling valid IPs.
I want to reset this thing and start from the ground up, I am not scared of going into the IOS and modifying what needs to be done...as long as I got a good enough walk through =)
Before I do that however, I wanna make sure that what I am envisioning is possible....
Respectfully,
Ermen
Solved! Go to Solution.
02-03-2012 01:20 PM
Hi,
the NetGear device you're talking about is a switch not a hub as these devices are not produced anymore so the Cisco device is the same type of device which is manageable unlike the Netgear device you wanted to buy( I suppose not knowing the model number).
If you want to insert the Cisco you should set it to default before inserting it:
-plug a blue console cable in the console plug and connect other side to a PC
-open a teminal emulator like Putty
- connect to the switch and type enable to enter privileged mode
- erase the vlan database: erase vlan.dat
- erase the startup config: wr erase
-reload the switch: reload
Then you should be good to go.
Regards.
Alain
02-03-2012 01:20 PM
Hi,
the NetGear device you're talking about is a switch not a hub as these devices are not produced anymore so the Cisco device is the same type of device which is manageable unlike the Netgear device you wanted to buy( I suppose not knowing the model number).
If you want to insert the Cisco you should set it to default before inserting it:
-plug a blue console cable in the console plug and connect other side to a PC
-open a teminal emulator like Putty
- connect to the switch and type enable to enter privileged mode
- erase the vlan database: erase vlan.dat
- erase the startup config: wr erase
-reload the switch: reload
Then you should be good to go.
Regards.
Alain
02-03-2012 01:21 PM
If you reset all the ports to Vlan1- it should work. We have couple of small offices where users space got 2 Network ports only, so we placed small switch (not 2940 though) for PC/Printer and 2nd port for Phone. No issues so far (except the cheap switches break sometime) :-).
hth
MS
02-03-2012 02:15 PM
Thank you very much for the responses!
I consoled in and did as instructed however when I plugged in from the wall outlet to any of the ethernet ports on the front 2 things didn't happen.
#1 the Link light doesnt turn on ... Not amber .... not Green ... nothing
#2 Still no connectivity
Do I need to enable one of these ports as a uplink port?
Respectfully,
Ermen
02-03-2012 02:18 PM
Let's try this way.
Connect the 2940 directly to your other switch. Use a CROSS-OVER cable.
02-03-2012 02:40 PM
Ok,
Heres a bit of an update.
I was using a cross-over and still wasn't getting anything, which then lead to me removing the faceplate. #2 and #3 weren't hooked up, I re spliced the wires, connected them, tucked in the excess, and then remade the connection...
WHAMO.
Up and running!
Tyvm All, I appreciate it highly!
Ermen
03-14-2012 12:31 PM
Remember to set the ports to trunk. Whenever you connect two like devices, in this case a switch to another switch, use a crossover cable and make sure the ports are configured to trunk.
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