Hitachi GR2000 manual Maximum Number of Interfaces and Multihome Subnets

Router Model		Maximum Number of VCs
	Per Line	Per NIF	Per Interface	Per RP	Per Router
GR2000-2S	2,048	2,048	64	4,096	4,096
GR2000-4S	2,048	2,048	64	4,096	4,096
GR2000-6H	2,048	2,048	64	4,096	4,096
GR2000-10H	2,048	2,048	64	4,096	4,096
GR2000-20H	2,048	2,048	64	4,096	4,096

4.2.6Maximum Number of Interfaces and Multihome Subnets

4.2.6.1Maximum Number of Interfaces

The number of units to which IP addresses are given is called the number of interfaces. See Table 4-34 for the maximum number of interfaces. The values shown are for the communication interfaces and hence do not count the RM Ethernet connection interface for the router management. In addition, the maximum number of interfaces assumes static routing. For the case of dynamic routing such as RIP or OSPF, the effective number of interfaces largely depends on the route calculation performance of the subject protocol.