Hitachi GR2000 - Manual (Page 227)

4.2.7.1 Maximum Number of Neighbor Routers
Definition of the maximum number of neighbor routers varies with routing protoc
as shown below. Table 4-36 shows the maximum number of neighbor routers ba
on the definition by each routing protocol.
For static routing, the number of next hop addresses.
For RIP, the number of interfaces on which RIP operates.
For OSPF:
In a network where this router is the OSPF designated router, the numbe
all the other OSPF routers in the network.
In a network where this router is not the OSPF designated router, the num
of interfaces on which OSPF operates.
For BGP4, the number of BGP peers.
Table 4-36 Maximum Number of Neighbor Routers
Routing Protocol Maximum Number of Neighbor Routers
Static routing 3584