Users Guide

Layer 3 Routing Commands 1511
no ip route [vrf vrf-name] networkaddr {subnetmask | prefix-length} {Null 0
| nexthopip | vlan vlan-id [nexthopip]}
• vrf-name—The name of the VRF if which the route is to be installed. If no
vrf is specified, the route is created in the global routing table.
• networkaddr — IP address of destination interface.
• subnetmask—A 32 bit dotted-quad subnet mask. Enabled bits in the mask
indicate the corresponding bits of the network address are significant.
Enabled bits in the mask must be contiguous.
• prefix-length—A forward slash followed by an integer number ranging
from 1-32 (e.g., /24). The integer number indicates the number of
significant bits in the address beginning with the leftmost (most
significant) bit.
• nexthopip—The next-hop IPv4 address is specified in the argument
nexthopip. Packets matching the destination route are forwarded to the
next hop IP address.
• vlan-id—A configured VLAN routing interface identifier for a VRF or an
IP unnumbered interface. If a VLAN routing interface for a VRF is
specified, it imports the associated subnet into the default routing
instance from the VRF associated with the VLAN.
• Null0 —The optional Null0 keyword indicates that packets matching the
route are dropped. This capability allows the administrator to purposefully
implement a black hole for selected traffic.
• text—A textual name for the route as configured by the administrator.
May be up to 32 characters in length.
Default Configuration
Default value of preference is 1. The router will prefer a route with a smaller
administrative distance that a route with a higher administrative distance.
Command Mode
Global Configuration mode