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7-13
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 7 Configuring OSPFv3
Configuration Guidelines and Limitations
• You have completed the OSPFv3 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 OSPFv3 Feature” section on page 7-13).
• You have installed the Advanced Services license and entered the desired VDC (see the Cisco Nexus
7000 Series NX-OS Virtual Device Context Configuration Guide, Release 4.x) if you are configuring
VDCs.
• You are familiar with IPv6 addressing and basic configuration. See Chapter 3, “Configuring IPv6”
for information on IPv6 routing and addressing.
Configuration Guidelines and Limitations
OSPFv3 has the following configuration guidelines and limitations:
• You can have up to four instances of OSPFv3 in a VDC.
• Cisco NX-OS displays areas in dotted decimal notation regardless of whether you enter the area in
decimal or dotted decimal notation.
• If you configure OSPFv3 in a vPC environment, use the following timer commands in router
configuration mode on the core switch to ensure fast OSPF convergence when a vPC peer-link is
shut down:
switch (config-router)# timers throttle spf 1 50 50
switch (config-router)# timers lsa-arrival 10
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.
Configuring Basic OSPFv3
Configure OSPFv3 after you have designed your OSPFv3 network.
This section includes the following topics:
• Enabling the OSPFv3 Feature, page 7-13
• Creating an OSPFv3 Instance, page 7-14
• Configuring Networks in OSPFv3, page 7-17
Enabling the OSPFv3 Feature
You must enable the OSPFv3 feature before you can configure OSPFv3.
BEFORE YOU BEGIN
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1. config t
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