Cisco Systems 3560 사용자 설명서

A Layer 3 switch can have an IP address assigned to each routed port and SVI. The number of routed 
ports and SVIs that you can configure is not limited by software. However, the interrelationship between 
this number and the number and volume of features being implemented might have an impact on CPU 
utilization because of hardware limitations. To optimize system memory for routing, use the sdm prefer 
routing global configuration command.

Configuring routing consists of several main procedures:

To support VLAN interfaces, create and configure VLANs on the switch, and assign VLAN 
membership to Layer 2 interfaces. For more information, see 

Configure Layer 3 interfaces.

Enable IP routing on the switch.

Assign IP addresses to the Layer 3 interfaces. 

Enable selected routing protocols on the switch. 

Configure routing protocol parameters (optional).

A required task for configuring IP routing is to assign IP addresses to Layer 3 network interfaces to 
enable the interfaces and allow communication with the hosts on those interfaces that use IP. These 
sections describe how to configure various IP addressing features. Assigning IP addresses to the 
interface is required; the other procedures are optional.

 shows the default addressing configuration.

IP address

None defined.

ARP

No permanent entries in the Address Resolution Protocol (ARP) cache.

Encapsulation: Standard Ethernet-style ARP.

Timeout: 14400 seconds (4 hours).

IP broadcast address

255.255.255.255 (all ones).

IP classless routing

Enabled.