Administrator Guide

Figure 102. Priority and Cost Examples
OSPF Implementation
The Dell Networking OS supports up to 10,000 OSPF routes for OSPFv2. Within the 10,000 routes, you can designate up to 8,000 routes
as external and up to 2,000 as inter/intra area routes.
Multiple OSPF processes (OSPF MP) are supported on OSPFv2 only; up to 32 simultaneous processes are supported.
On OSPFv3, the system supports only one process at a time for all platforms.
OSPFv2 and OSPFv3 can coexist on a switch, but you must configure them individually.
The system supports stub areas, totally stub (no summary) and not so stubby areas (NSSAs) and supports the following LSAs:
• Router (type 1)
• Network (type 2)
• Network Summary (type 3)
• AS Boundary (type 4)
• LSA(type 5)
• External LSA (type 7)
• Link LSA, OSPFv3 only (type 8)
• Opaque Link-Local (type 9)
• Grace LSA, OSPFv3 only (type 11)
Fast Convergence (OSPFv2, IPv4 Only)
Fast convergence allows you to define the speeds at which LSAs are originated and accepted, and reduce OSPFv2 end-to-end
convergence time.
The system allows you to accept and originate LSAs as soon as they are available to speed up route information propagation.
NOTE:
The faster the convergence, the more frequent the route calculations and updates. This impacts CPU utilization
and may impact adjacency stability in larger topologies.
Open Shortest Path First (OSPFv2 and OSPFv3) 611