Cisco Catalyst 3560-X Series, Software Configuration Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring IP Unicast Routing
Configuring IP Addressing
•
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).
Configuring IP Addressing
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.
Note On switches running the LAN base feature set, you can only assign an IP address to an SVI and configure
a static unicast route on the interface. Other configurations are not supported.
• Default Addressing Configuration, page 1-6
•
Assigning IP Addresses to Network Interfaces, page 1-7
• Configuring Address Resolution Methods, page 1-10
•
Routing Assistance When IP Routing is Disabled, page 1-12
•
Configuring Broadcast Packet Handling, page 1-15
•
Monitoring and Maintaining IP Addressing, page 1-19
Default Addressing Configuration
Table 1-1 Default Addressing Configuration
Feature Default Setting
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.
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.