3550 dhcp relay

[lcaruso]

Hi,

I'm going to configure dhcp relay on a 3550 running 12.1. Can anyone provide a configuration example?

Do I need more than an ip helper address?

Thanks.

[Reza Sharifi · Accepted solution]

Hi,

Correct, all you need is ip helper-address

HTH

[srikanth ath · Accepted solution]

hi here is the dhcp relay agent configuration example

1. Switch# configure terminal
2. Enter configuration commands, one per line.  End with CNTL/Z.
3. Switch(config)# service dhcp
4. Switch(config)# ip dhcp relay information option
5. Switch(config)# interface vlan 10
6. Switch(config-if)# ip address 10.0.0.1 255.0.0.0
7. Switch(config-if)# ip helper-address 30.0.0.2
8. Switch(config-if)# exit
9. Switch(config)# interface range gigabitethernet0/1 - 2
10. Switch(config-if)# switchport mode access
11. Switch(config-if)# switchport access vlan 10
12. Switch(config-if)# exit

you can go through the document

http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_13_ea1/configuration/guide/swdhcp82.html

[lcaruso]

thanks much!