Specifications

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Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, Release 5.0(3)U2(2)
OL-25782-02
Chapter 3 Configuring OSPFv2
Prerequisites for OSPFv2
Prerequisites for OSPFv2
OSPFv2 has the following prerequisites:
• You must be familiar with routing fundamentals to configure OSPF.
• You are logged on to the switch.
• You have configured at least one interface for IPv4 that is capable of communicating with a remote
OSPFv2 neighbor.
• You have installed the LAN Base Services license.
• You have completed the OSPFv2 network strategy and planning for your network. For example, you
must decide whether multiple areas are required.
• You have enabled the OSPF feature (see the “Enabling the OSPFv2 Feature” section on page 3-13).
Guidelines and Limitations
OSPFv2 has the following configuration guidelines and limitations:
• Cisco NX-OS displays areas in dotted decimal notation regardless of whether you enter the area in
decimal or dotted decimal notation.
Note If you are familiar with the Cisco IOS CLI, be aware that the Cisco NX-OS commands for this feature
might differ from the Cisco IOS commands that you would use.
Default Settings
Table 3-2 lists the default settings for OSPFv2 parameters.
Product License Requirement
Cisco NX-OS OSPFv2 requires a LAN Base Services license. For over 256 routes, OSPFv2 requires an Enterprise services
license. For a complete explanation of the Cisco NX-OS licensing scheme and how to obtain and apply
licenses, see the Cisco NX-OS Licensing Guide.
Table 3-2 Default OSPFv2 Parameters
Parameters Default
Hello interval 10 seconds
Dead interval 40 seconds
OSPFv2 feature Disabled
Stub router advertisement announce time 600 seconds
Reference bandwidth for link cost calculation 40 Gb/s
LSA minimal arrival time 1000 milliseconds