Intel 480T, User Manual

Page: 183 / 367

C H A P T E R 1 0 IP Unicast Routing
181
3 Configure the addresses to which DHCP or BOOTP requests
should be directed, using the following command:
config bootprelay add <ipaddress>
To delete an entry, use the following command:
config bootprelay delete {<ipaddress> | all}
Verifying the DHCP/BOOTP Relay
Configuration
To verify the DHCP/BOOTP relay configuration, use the following
command:
show ipconfig
This command displays the configuration of the BOOTP relay
service, and the addresses that are currently configured.
UDP-Forwarding
UDP-forwarding is a flexible and generalized routing utility for
handling the directed forwarding of broadcast UDP packets. UDP-
forwarding allows applications, such as multiple DHCP relay
services from differing sets of VLANs, to be directed to different
DHCP servers. The following rules apply to UDP broadcast packets
handled by this feature:
• If the UDP profile includes BOOTP or DHCP, it is handled
according to guidelines in RFC 1542.
• If the UDP profile includes other types of traffic, these packets
have the IP destination address modified as configured, and
changes are made to the IP and UDP checksums and decrements
to the TTL field, as appropriate.
If the UDP-forwarding is used for BOOTP or DHCP forwarding
purposes, do not configure or use the existing
bootprelay
function. However, if the previous
bootprelay
functions are
adequate, you may continue to use them.