Can a L2 2950 switch ran a DHCP service?

jamesgonzo · ‎10-05-2008

Hi,

I have added the following to my Cisco 2950 L2 switch, but don't seem to get an IP address, any ideas?

ip dhcp pool vlan29

network 192.168.25.0 255.255.255.0

default-router 192.168.25.1

dns-server 192.168.25.1

lease 0 2

Jon Marshall · ‎10-05-2008

James

According to the configuration guide the 2950 cannot act as a DHCP server. The 2955 switch can however.

http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_22_ea11x/configuration/guide/swdhcp82.html#wp1148254

Jon

jamesgonzo · ‎10-05-2008

Hi Jon,

It just confused me the fact that I could add it.

Now I have a 3650 trunked off this 2950, can this provide DHCP for the 2950's VLAN's?

Thanks

Jon Marshall · ‎10-05-2008

James

The reason you could add it is because the 2950 and 2955 share the same code base and the 2955 can act as a DHCP server. So the commands are still available for the 2950, they just don't work.

Yes the 3560 can act as a DHCP server -

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_44_se/configuration/guide/swdhcp82.html

Jon

jamesgonzo · ‎10-05-2008

Great!

Does this mean it could serve the VLAN's on the 2950 with IP addresses through the trunk?

Thanks

Jon Marshall · ‎10-05-2008

Yes it does. As long as the vlans are included on the trunk clients connected to the 2950 should be able to get IP addresses from the 3560.

Jon