Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 456

www.dell.com | support.dell.com IP Addresses FTOS supports IP version 4, as described in RFC 791. It also supports classful routing and Variable Length Subnet Masks (VLSM). With VLSM one network can be can configured with different masks. Supernetting, which increases the number of subnets, is also supported. Subnetting is when a mask is added 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 on IP addressing, refer to RFC 791, Internet Protocol. Implementation Information In FTOS, you can configure any IP address as a static route except IP addresses already assigned to interfaces. Note: FTOS versions 7.7.1.0 and later support 31-bit subnet masks (/31, or 255.255.255.254) as defined by RFC 3021. This feature allows you to save two more IP addresses on point-to-point links than 30-bit masks. FTOS supports RFC 3021 with ARP. Configuration Task List for IP Addresses The following list includes the configuration tasks for IP addresses: • Assign IP addresses to an interface (mandatory) • Configure static routes (optional) • Configure static routes for the management interface (optional) For a complete listing of all commands related to IP addressing, refer to FTOS Command Line Interface Reference. Assign IP addresses to an interface Assign primary and secondary IP addresses to physical or logical (for example, VLAN or port channel) interfaces to enable IP communication between the E-Series and hosts connected to that interface. In FTOS, you can assign one primary address and up to 255 secondary IP addresses to each interface. 456 | IPv4 Addressing