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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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DHCP Client on a Management Interface

These conditions apply when you enable a management interface to operate as a DHCP client.

  • The management default route is added with the gateway as the router IP address received in the DHCP ACK packet. It is required to send and receive traffic to and from other subnets on the external network. The route is added irrespective of whether the DHCP client and server are on same or different subnets. The management default route is deleted if the management IP address is released like other DHCP client management routes.
  • ip route for 0.0.0.0 takes precedence if it is present or added later.
  • Management routes added by a DHCP client display with Route Source as DHCP in the show ip management route and show ip management-route dynamic command output.
  • Management routes added by DHCP are automatically reinstalled if you configure a static IP route with the ip route command that replaces a management route added by the DHCP client. If you remove the statically configured IP route using the no ip route command, the management route is reinstalled. Manually delete management routes added by the DHCP client.
  • To reinstall management routes added by the DHCP client that is removed or replaced by the same statically configured management routes, release the DHCP IP address and renew it on the management interface.
  • Management routes added by the DHCP client have higher precedence over the same statically configured management route. Static routes are not removed from the running configuration if a dynamically acquired management route added by the DHCP client overwrites a static management route.
  • Management routes added by the DHCP client are not added to the running configuration.
  • NOTE: Management routes added by the DHCP client include the specific routes to reach a DHCP server in a different subnet and the management route.

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