Users Guide

IPv4 Routing

IPv4 routing and various IP addressing features are supported. This chapter describes the basics of domain name service (DNS), address

resolution protocol (ARP), and routing principles and their implementation in the Dell Networking OS.

IP Feature Default

DNS Disabled

Directed Broadcast Disabled

Proxy ARP Enabled

ICMP Unreachable Disabled

ICMP Redirect Disabled

Topics:

• IP Addresses

• Conguration Tasks for IP Addresses

• Assigning IP Addresses to an Interface

• Conguring Static Routes

• Congure Static Routes for the Management Interface

• Enabling Directed Broadcast

• Resolution of Host Names

• Enabling Dynamic Resolution of Host Names

• Specifying the Local System Domain and a List of Domains

• Conguring DNS with Traceroute

• ARP

• ICMP

IP Addresses

The Dell Networking OS supports IP version 4 (as described in RFC 791), classful routing, and variable length subnet masks (VLSM).

With VLSM, you can congure one network with dierent masks. Supernetting, which increases the number of subnets, is also supported.

To subnet, you add a mask to the IP address to separate the network and host portions of the IP address.

At its most basic level, an IP address is 32-bits composed of network and host portions and represented in dotted decimal format. For

example, 00001010110101100101011110000011 is represented as 10.214.87.131.

For more information about IP addressing, refer to RFC 791, Internet Protocol.

Implementation Information

You can congure any IP address as a static route except IP addresses already assigned to interfaces.

480 IPv4 Routing