Ospf Commands - Dell Networking 2024 Reference Manual

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OSPF Commands

Dell Networking N3000/N4000 Series Switches

The Dell Network N2000 series supports limited routing and multicast capabilities.

See the Users Configuration Guide section "Feature Limitations and Platform

Constants" for supported capabilities.

OSPF is a link-state protocol. Dell Networking OSPF supports variable-

length subnet masks. Dell Networking OSPF only operates over VLAN

OSPF operates within a hierarchy. The largest entity within the hierarchy is

the autonomous system (AS), a collection of networks under a common

administration sharing a common routing strategy. This is sometimes called a

routing domain. An AS can be divided into a number of areas or groups of

contiguous networks and attached hosts. Routers within the same area share

the same information, so they have identical topological databases.

Information is sent in the form of link-state advertisements (LSAs) to all

other routers within the same hierarchical area. An area's topology is not

visible to routers outside the area.

Two different types of OSPF routing occur as a result of area partitioning:

Intra-area and Inter-area. Intra-area routing occurs if a source and destination

are in the same area. Inter-area routing occurs when a source and destination

are in different areas. An OSPF backbone distributes information between

For IPv4 networks, Dell Networking routing supports OSPF version 2 in

accordance with RFC 2328. The Dell Networking routing also provides a

compatibility mode for the RFC 1583 OSPF specification, which allows

interoperability with OSPF version 2 routers using the older implementation.

The Dell Networking OSFPv2 implementation supports point-to-point

operation on Ethernet interfaces. The user can configure an OSPFv2

interface to run in broadcast or point-to-point mode. When there are only

two routers attached to the link, OSPFv2 point-to-point mode has the

advantage of not requiring designated router election or origination of a

network LSA for the LAN. This makes the protocol more efficient. Dell

Networking also supports OSPFv3 for use with IPv6 networks.

OSPF Commands

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