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Routing Commands
261
ProSafe M4100 and M7100 Managed Switches
ip helper-address
Use this command to add a unicast helper address to the list of helper addresses on an
interface. This is the address of a DHCP server. This command can be applied multiple times
on the routing interface to form the helper addresses list until the list reaches the maximum
supported helper addresses.
Format ip helper-address <ip-address>
{<1-65535>|dhcp|domain|isakmp|mobile-ip|nameserver|
netbios-dgm|netbios-ns|ntp|pim-auto-rip|rip|tacacs|tftp|time}
Mode
no ip helper-address
Use this command to remove the IP address from the previously configured list. The no
command without an <
ip-address> argument removes the entire list of helper addresses
on that interface.
Format no ip helper-address {<ip-address>}
{<1-65535>|dhcp|domain|isakmp|mobile-ip|nameserver|
netbios-dgm|netbios-ns|ntp|pim-auto-rip|rip|tacacs|tftp|time}
Mode
ip helper-address discard
Use this command to drop matching packets.
Format ip helper-address discard
{<1-65535>|dhcp|domain|isakmp|mobile-ip|nameserver|
netbios-dgm|netbios-ns|ntp|pim-auto-rip|rip|tacacs|tftp|time}
Mode
no ip helper-address discard
Use this command to permit the matching packets.
Format no ip helper-address discard
{<1-65535>|dhcp|domain|isakmp|mobile-ip|nameserver|
netbios-dgm|netbios-ns|ntp|pim-auto-rip|rip|tacacs|tftp|time}
Mode
show ip helper-address
Use this command to display the configured helper addresses on the given interface.
Format show ip helper-address <interface>
Mode
• Privileged EXEC
• User EXEC
Interface Config
Interface Config
Interface Config
Interface Config