Hitachi GR2000 Series Installation Manual page 248

over IPv4 tunnel is shown in Table 4-66. The total number of both tunnel interfaces
must be lower than the value shown in Table 4-66
Table 4-66 Number of Tunnel Interfaces
Router Model
GR2000-2S
GR2000-4S
GR2000-6H
GR2000-10H
GR2000-20H
(Note) For previous versions, the number of settings is 256 in all cases. When setting 1024 interfaces,
use of RP-C6/RP-D6 is a prerequisite.
4.2.12.8 Maximum Number of IPv6 Addresses to be Set
The maximum number of IPv6 addresses that can be set using configuration
IPv4 over IPv6
256
Number of interfaces
IPv6 over IPv4
256
1024
Per Router
256
1024