White Papers

IP Addresses
Dell EMC Networking OS supports IP version 4 (as described in RFC 791), classful routing, and variable length subnet masks
(VLSM).
With VLSM, you can configure one network with different 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 configure any IP address as a static route except IP addresses already assigned to interfaces.
NOTE: Dell EMC Networking OS supports 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. Dell EMC Networking OS
supports RFC 3021 with ARP.
NOTE: Even though Dell EMC Networking OS listens to all ports, you can only use the ports starting from 35001 for IPv4
traffic. Ports starting from 0 to 35000 are reserved for internal use and you cannot use them for IPv4 traffic.
Configuration Tasks for IP Addresses
The following describes the tasks associated with IP address configuration.
Configuration tasks for IP addresses includes:
● Assigning IP Addresses to an Interface (mandatory)
● Configuring Static Routes (optional)
● Configure Static Routes for the Management Interface (optional)
For a complete listing of all commands related to IP addressing, refer to the Dell EMC Networking OS Command Line Interface
Reference Guide.
Assigning IP Addresses to an Interface
Assign primary and secondary IP addresses to physical or logical (for example, [virtual local area network [VLAN] or port
channel) interfaces to enable IP communication between the system and hosts connected to that interface.
You can assign one primary address and up to 255 secondary IP addresses to each interface.
1. Enter the keyword interface then the type of interface and slot/port information.
CONFIGURATION mode
interface stack/slot/port[/subport]
● For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the stack/slot/port/subport
information.
● For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE then the stack/slot/port/subport
information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the stack/slot/port[/subport] information.
● For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the stack/slot/port/subport information.
● For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then the stack/slot/port information.
● For a Loopback interface, enter the keyword loopback then a number from 0 to 16383.
● For the Management interface on the stack-unit, enter the keyword ManagementEthernet then the slot/port
information.
● For a port channel interface, enter the keywords port-channel then a number.
● For a VLAN interface, enter the keyword vlan then a number from 1 to 4094.
414
IPv4 Routing