8.3.17.0 - Force10 Networks

DHCP Client on a Management Interface
The following conditions apply on a management interface that operates as a DHCP client:
• The management default route is added with the gateway as the router IP address received in the
DHCP ACK packet. This is required to send and receive traffic to and from other subnets on the
external network. This route is added irrespective both when the DHCP client and server are in the
same or different subnets.
The management default route is deleted if the management IP address is released like other management
routes added by the DHCP client.
• If "ip route for 0.0.0.0" is present or added later, it will take precedence.
• Management routes added by a DHCP client are displayed with Route Source as DHCP in show ip
management route and show ip management-route dynamic command output.
• If a static IP route configured with the ip route command replaces a management route added by the
DHCP client and then if the statically-configured IP route is removed (no ip route command), the
management route added by DHCP is automatically re-installed. The management routes added by the
DHCP client must be manually deleted.
• If a management route added by the DHCP client is removed or replaced by the same
statically-configured management route, it is not re-installed unless you release the DHCP IP address
and renew it on the management interface.
• A management route added by the DHCP client has higher precedence over the same
statically-configured management route. If a dynamically-acquired management route added by the
DHCP client overwrites a static management route, the static route is not removed from the running
configuration.
• 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 default management route.
Dynamic Host Configuration Protocol (DHCP) | 89