Use this command to specify the physical or logical interface to use as the RADIUS (Remote Authentication Dial In User Service) client source interface (Source IP address). If configured, the address of source-interface is used for all RADIUS communications between the RADIUS server and the RADIUS client. The selected source-interface IP address is used for filling the IP header of RADIUS management protocol packets. This allows security devices (firewalls) to identify the source packets coming from the specific switch.
If a source-interface is not specified, the primary IP address of the originating (outbound) interface is used as the source address. If the configured interface is down, the RADIUS client falls back to its default behavior.
| Format | radius source-interface {unit/slot/port | loopback loopback-id | vlan vlan-id} |
| Mode | Global Config |
| Parameter | Description |
|---|---|
| unit/slot/port | The unit identifier assigned to the switch. |
| loopback-id | Configures the loopback interface. The range of the loopback ID is 0 to 7. |
| vlan-id | Configures the VLAN interface to use as the source IP address. The range of the VLAN ID is 1 to 4093. |
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