464 | IPv4 Addressingw w w . d e l l . c o m | s u p p o r t . d e l l . c o m At its most basic level, an IP address is 32-bits composed of network and host portions and represented indotted decimal format. For example,00001010110101100101011110000011is represented as 10.214.87.131For more information on IP addressing, refer to RFC 791, Internet Protocol.Implementation InformationIn FTOS, you can configure any IP address as a static route except IP addresses already assigned tointerfaces.Configuration Task List for IP AddressesThe following list includes the configuration tasks for IP addresses:• Assign IP addresses to an interface on page 464 (mandatory)• Configure static routes on page 466 (optional)• Configure static routes for the management interface on page 467 (optional)For a complete listing of all commands related to IP addressing, refer to FTOS Command Line InterfaceReference.Assign IP addresses to an interfaceAssign 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. InFTOS, you can assign one primary address and up to 255 secondary IP addresses to each interface.Note: FTOS versions 7.7.1.0 and later support 31-bit subnet masks (/31, or 255.255.255.254) as defined byRFC 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.
