Is it possible to use a Cisco 2950 switch as a DHCP relay?
In this response, our routing and switching expert, Sudhanshu Gupta, provides a table of commands to enable a Cisco 2950 switch DHCP functionality.
Is it possible to use a Cisco 2950 switch as a DHCP relay? If so, how can I? I've configured a C172x router but the switch seems different.
Commands for DHCP functionality
configure terminal |
To enter global configuration mode. |
ip dhcp snooping |
To enable DHCP snooping globally. |
ip dhcp snooping vlan vlan-id [vlan-id] |
To enable DHCP snooping on a VLAN or range of VLANs. You can specify a single VLAN identified by VLAN ID. |
ip dhcp snooping information option |
To enable the switch to insert and remove DHCP relay information (option-82 field) in forwarded DHCP request messages to the DHCP server. This is enabled by default. |
interface [interface-id] |
To enter interface configuration mode, and specify the interface to be configured. |
ip dhcp snooping trust |
This is an optional command. It configures the interface as trusted or un-trusted. The default is un-trusted. |
ip dhcp snooping limit rate [rate] |
This is an optional command. It configures the number of DHCP packets per second than an interface can receive. The range you can specify for [rate] is 1 to 4294967294. The default is no rate limit configured. |
[ ] expects arguments to be given like VLAN-ID or rate limit. The first five commands should be enough to configure DHCP relay. The other two give the functionality more granularities.