HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Services Configuration G - Page 51
Enabling handling of Option 82, Configuring DHCP server compatibility
View all HP 6125XLG manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 51 highlights
Enabling handling of Option 82 Perform this task to enable the DHCP server to handle Option 82. Upon receiving a DHCP request with Option 82, the DHCP server adds Option 82 into the DHCP response. If you disable the DHCP to handle Option 82, it does not add Option 82 into the response message. You must enable handling of Option 82 on both the DHCP server and the DHCP relay agent to ensure normal operation of Option 82. For information about enabling handling of Option 82 on the DHCP relay agent, see "Configuring Option 82." To enable the DHCP server to handle Option 82: Step 1. Enter system view. 2. Enable the server to handle Option 82. Command Remarks system-view N/A dhcp server relay information enable By default, handling of Option 82 is enabled. Configuring DHCP server compatibility Perform this task to enable the DHCP server to support DHCP clients that are incompliant with RFC. Configuring the DHCP server to broadcast all responses Typically, the DHCP server broadcasts a response only when the broadcast flag in the DHCP request is set to 1. To work with DHCP clients that set the broadcast flag to 0 but do not accept unicast responses, configure the DHCP server to ignore the broadcast flag and always broadcast a response. Upon receiving a DHCP request from a DHCP client that has an IP address (the ciaddr field is not 0), the DHCP server always unicasts a response (the destination address is ciaddr) to the DHCP client regardless of whether it is enabled to broadcast all responses. Upon receiving a DHCP request from a DHCP relay agent (the giaddr field is not 0), the DHCP server always unicasts a response (the destination address is giaddr) to the DHCP relay agent regardless of whether it is enabled to broadcast all responses. To configure the DHCP server to broadcast all responses: Step 1. Enter system view. Command system-view 2. Enable the DHCP server to broadcast all responses. dhcp server always-broadcast Remarks N/A By default, the DHCP server looks at the broadcast flag to decide whether to broadcast or unicast a response. Configure the DHCP server to ignore BOOTP requests The lease duration of the IP addresses obtained by the BOOTP clients is unlimited. For some scenarios that do not allow unlimited leases, you can configure the DHCP server to ignore BOOTP requests. 42