Ospfv3 And The Ipv6 Unicast Rib; Address Family Support; Advanced Features - Cisco Nexus 7000 Series Configuration Manual

Information About OSPFv3
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .

OSPFv3 and the IPv6 Unicast RIB

OSPFv3 runs the Dijkstra shortest path first algorithm on the link-state database. This algorithm selects
the best path to each destination based on the sum of all the link costs for each link in the path. The
resultant shortest path for each destination is then put in the OSPFv3 route table. When the OSPFv3
network is converged, this route table feeds into the IPv6 unicast RIB. OSPFv3 communicates with the
IPv6 unicast RIB to do the following:
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OSPFv3 also runs a modified Dijkstra algorithm for fast recalculation for Inter-Area Prefix, Inter-Area
Router, AS-External, Type-7, and Intra-Area Prefix (type 3, 4, 5, 7, 8) LSA changes.

Address Family Support

Cisco NX-OS supports multiple address families, such as unicast IPv6 and multicast IPv6. OSPFv3
features that are specific to an
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Use the address-family ipv6 unicast command to enter the IPv6 unicast address family configuration
mode when configuring these features.

Advanced Features

Cisco NX-OS supports a number of advanced OSPFv3 features that enhance the usability and scalability
of OSPFv3 in the network.
This section includes the following topics:
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Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
7-8
Add or remove routes
Handle route redistribution from other protocols
Provide convergence updates to remove stale OSPFv3 routes and for stub router advertisements (see
the "Multiple OSPFv3 Instances" section on page
Default routes
Route summarization
Route redistribution
Filter lists for border routers
SPF optimization
Stub Area, page 7-9
Not-So-Stubby Area, page 7-9
Virtual Links, page 7-10
Route Redistribution, page 7-10
Route Summarization, page 7-10
High Availability and Graceful Restart, page 7-11
Multiple OSPFv3 Instances, page 7-12
SPF Optimization, page 7-12
Virtualization Support, page 7-12
7-12)
address family are as follows:
Chapter 7 Configuring OSPFv3
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