Chapter 13: Configuring Ip Information; Management And Ip Interfaces - Cisco 500 series Administration Manual

Configuring IP Information

Management and IP Interfaces

NOTE
Cisco 500 Series Stackable Managed Switch Administration Guide
IP interface addresses can be configured manually by the user, or automatically
configured by a DHCP server. This section provides information for defining the
switch IP addresses either manually or by making the switch a DHCP client.
This section covers the following topics:
• Management and IP Interfaces
• Defining IPv4 Routes
• Configuring ARP
• Enabling ARP Proxy
• Defining UDP Relay
• Domain Name Systems
SG500X devices always work in Layer 3-enabled system mode. The Sx500
devices, on the other hand, can either be set to work in Layer 2 or Layer 3 system
mode. Therefore, when this section refers to a device that works in Layer 3 system
mode, this refers to all SG500X devices and those Sx500 devices that have been
manually set to Layer 3 system mode.
Some features are only available in Layer 2 or Layer 3 system mode, as described
below:
• In Layer 2 system mode (only Sx500 devices), the switch operates as a
Layer 2 VLAN-aware switch, and has no routing capabilities.
• In Layer 3 system mode, the switch has IP routing capabilities as well as
Layer 2 system mode capabilities. In this system mode, a Layer 3 port still
retains much of the Layer 2 functionality, such as Spanning Tree Protocol
and VLAN membership.
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