Cisco Systems 3560 Manual Do Utilizador

An IP address identifies a location to which IP packets can be sent. Some IP addresses are reserved for 
special uses and cannot be used for host, subnet, or network addresses. RFC 1166, “Internet Numbers,” 
contains the official description of IP addresses.

An interface can have one primary IP address. A mask identifies the bits that denote the network number 
in an IP address. When you use the mask to subnet a network, the mask is referred to as a subnet mask. 
To receive an assigned network number, contact your Internet service provider.

Beginning in privileged EXEC mode, follow these steps to assign an IP address and a network mask to 
a Layer 3 interface:

IP default gateway

Disabled.

IP directed broadcast

Disabled (all IP directed broadcasts are dropped).

IP domain

Domain list: No domain names defined.

Domain lookup: Enabled.

Domain name: Enabled.

IP forward-protocol 

If a helper address is defined or User Datagram Protocol (UDP) flooding is 
configured, UDP forwarding is enabled on default ports.

Any-local-broadcast: Disabled.

Spanning Tree Protocol (STP): Disabled.

Turbo-flood: Disabled.

IP helper address

Disabled.

IP host

Disabled.

IRDP

Disabled.

Defaults when enabled: 

Broadcast IRDP advertisements.

Maximum interval between advertisements: 600 seconds.

Minimum interval between advertisements: 0.75 times max interval

Preference: 0.

IP proxy ARP

Enabled.

IP routing

Disabled.

IP subnet-zero

Disabled.

Enter global configuration mode.

interface interface-id

Enter interface configuration mode, and specify the Layer 3 
interface to configure.