ip dhcp-source-address
This command allows the user to configure the DHCP relay source address. This command is valid only in case of DHCP relay (remote).
Syntax
| ■ | Mediant 500Li, Mediant 800Ci, and MP-5xx: |
ip dhcp-source-address interface ip dhcp-source-address <IP Address>
| ■ | Mediant 500L MSBR, Mediant 500 MSBR, Mediant 500C MSBR, Mediant 800B MSBR, and Mediant 800C MSBR: |
ip dhcp-source-address all <IP Address> ip dhcp-source-address <Interface Name> <IP Address>
|
Command |
Description |
|
|---|---|---|
|
<IP Address> |
Specifies a valid IPv4 address (in dotted decimal notation, for example, 10.1.2.3) for the DHCP relay source address. |
|
|
all |
Enables all interfaces. Note: Applicable only to Mediant 500L MSBR, Mediant 500 MSBR, Mediant 500C MSBR, Mediant 800B MSBR, and Mediant 800C MSBR. |
|
|
interface |
Uses the IP address of the LAN interface under which the command is run as the source address. Note: Applicable only to Mediant 500Li, Mediant 800Ci, and MP-5xx. |
|
|
<Interface Name> |
Defines the interface. Note: Applicable only to Mediant 500L MSBR, Mediant 500 MSBR, Mediant 500C MSBR, Mediant 800B MSBR, and Mediant 800C MSBR. |
|
Default
NA
Notes
| ■ | The address should be of one of the local interfaces. |
| ■ | If you don't configure dhcp-source-address, the default behavior is to use the source address of the WAN interface that is used to communicate with the DHCP server. |
Command Mode
Privileged User
Related Commands
The dhcp-source-address command takes effect only when the DHCP Relay server is configured (see the ip dhcp-server command).
Example
| ■ | Mediant 500Li, Mediant 800Ci, and MP-5xx: |
This example configures VLAN 5 to relay DHCP requests to 10.5.5.11 and use the IP address of VLAN 5 as the source address on the relayed packets:
(config-data)# interface vlan 5 (conf-if-vlan 5)# ip dhcp-server 10.5.5.11
(conf-if-vlan 5)# ip dhcp-source-address interface
| ■ | Mediant 500L MSBR, Mediant 500 MSBR, Mediant 500C MSBR, Mediant 800B MSBR, and Mediant 800C MSBR: |
This example configures VLAN 5 to relay DHCP requests to 10.5.5.11 and use 10.4.4.11 as the source address on the relayed packets:
(config-data)# ip dhcp-server 10.5.5.11 vlan 5 (config-data)# ip dhcp-source-address vlan 5 10.4.4.11