Reference Guide

646 | IPv4 Routing
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• enable DNS with the ip domain-lookup command.
To view current bindings, use the show hosts command.
Related
Commands
ip fib download-igp-only
e
Configure the E-Series to download only IGP routes (for example, OSPF) on to line cards. When the
command is configured or removed, it clears the routing table (similar to clear ip route command) and
only IGP routes populate the table.
Syntax
ip fib download-igp-only [small-fib]
To return to default setting, use the no ip fib download-igp-only [small-fib] command.
Parameters
Defaults
Disabled
Command Modes
CONFIGURATION
Command
History
ip helper-address
c e s
Specify the address of a DHCP server so that DHCP broadcast messages can be forwarded when the
DHCP server is not on the same subnet as the client.
Syntax
ip helper-address ip-address | default-vrf
To remove a DHCP server address, enter no ip helper-address.
Parameters
Defaults
Not configured.
Command Modes
INTERFACE
Command
History
ip domain-list Configure additional names.
small-fib (OPTIONAL) Enter the keyword small-fib to download a smaller FIB table. This option
is useful on line cards with a limited FIB size.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Added support for S-Series
Version 7.5.1.0 Added support for C-Series
pre-Version 6.2.1.1 Introduced on E-Series
ip-address
Enter an IP address in dotted decimal format (A.B.C.D).
default-vrf
(Optional) E-Series Only: Enter default-vrf for the DHCP server VRF is using.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.9.1.0 Introduced VRF on the E-Series
Version 7.6.1.0 Added support for S-Series