Configuring Address Resolution Methods - Cisco 3032 Software Configuration Manual

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Configuring IP Unicast Routing

To prevent the switch from forwarding packets destined for unrecognized subnets to the best supernet

route possible, you can disable classless routing behavior.

Beginning in privileged EXEC mode, follow these steps to disable classless routing:

configure terminal

no ip classless

show running-config

copy running-config startup-config

To restore the default so that the switch forwards packets destined for a subnet of a network without a

network default route to the best possible supernet route, use the ip classless global configuration

Configuring Address Resolution Methods

You can control interface-specific handling of IP by using address resolution. A device using IP can have

both a local address or a MAC address, which uniquely defines the device on its local segment or LAN,

and a network address, which identifies the network to which the device belongs.

In a switch stack, network communication uses a single MAC address and the IP address of the stack.

The local address or the MAC address is known as a data-link address because it is contained in the

data-link layer (Layer 2) section of the packet header and is read by data-link (Layer 2) devices. To

communicate with an Ethernet device, the software must learn the MAC address of the device. The

process of learning the MAC address from an IP address is called address resolution. The process of

learning the IP address from the MAC address is called reverse address resolution.

No IP Classless Routing

Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide

Enter global configuration mode.

Disable classless routing behavior.

Return to privileged EXEC mode.

Verify your entry.

(Optional) Save your entry in the configuration file.

Configuring IP Addressing

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