Hitachi GR2000 - Manual (Page 247)

interfaces. The maximum number of interfaces in each model whose IPv6 addres
can be set is shown in Table 4-64. The value shown in the table is the value
obtained when the number of tunnel interfaces is subtracted. Moreover, the
operation in the maximum number of interfaces presupposes that router informat
is set using a static route. The maximum number of effective interfaces is limited
the performance of route information calculation when dynamic routing such as
RIPng and BGP4+ is used.
Table 4-64 Number of interfaces
Router Model IPv6 relaying
Number of interfaces
Per RP Per Router
GR2000-2S S/W processing 32 32
GR2000-4S S/W processing 32 32
GR2000-6H
GR2000-10H
GR2000-20H
GR2000-4 H/W processing 256 256
GR2000-6H
GR2000-10H