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42
IP Routing Commands
Command Mode
Global Configuration
Command Usage
• The command affects both static and dynamic unicast routing.
• If IP routing is enabled, all IP packets are routed using either static routing or
dynamic routing via RIP or OSPF, and other packets for all non-IP protocols
(e.g., NetBuei, NetWare or AppleTalk) are switched based on MAC
addresses. If IP routing is disabled, all packets are switched, with filtering and
forwarding decisions based strictly on MAC addresses.
Example
Console(config)#ip routing
Console(config)#
ip route
This command configures static routes. Use the no form to remove static routes.
Syntax
ip route {destination-ip netmask | default} {gateway} [metric metric]
no ip route {destination-ip netmask | default | *}
• destination-ip – IP address of the destination network, subnetwork, or host.
• netmask - Network mask for the associated IP subnet. This mask identifies
the host address bits used for routing to specific subnets.
• default – Sets this entry as the default route.
• gateway – IP address of the gateway used for this route.
• metric – Selected RIP cost for this interface. (Range: 1-5, default: 1)
• * – Removes all static routing table entries.
Default Setting
No static routes are configured.
Command Mode
Global Configuration
Command Usage
• You can configure up to 64K static routes.
• If a static route is defined, it will always take preference over a dynamic route.
• Static routes are included in RIP and OSPF updates periodically sent by the
router if this feature is enabled by the RIP or OSPF redistribute command
(see page 42-11 or page 42-25, respectively).
Example
This example forwards all traffic for subnet 192.168.1.0 to the router 192.168.5.254,
using the default metric of 1.
Console(config)#ip route 192.168.1.0 255.255.255.0 192.168.5.254
Console(config)#
42-2
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