Hitachi GR2000 Series Installation Manual page 235

BCU memory
size
128MB or more 2,000 or less
256MB or more 22,000 or less
512MB or more 83,000 or less
768MB or more 125,000 or less
(Note 1)
(Note 1) If the basic control unit is duplicated, it is necessary to expand the memory so as to achieve the minimu
required memory amount for both the operating RM and the standby RM.
(Note 2) The minimum required memory to operate the MPLS and the BGP4 simultaneously is 256 MB for BCU
128 MB for RP. If the VPN function of RFC2547 bis system is used, it is necessary to operate the BGP4
simultaneously because the route information of VPN is carried through the MPLS backbone net by using the BG
(Note 3) The number of route entries includes that of the static route, direct route, summarization route, default ro
and loop back route.
(Note 4) The number of route entries includes that of the alternate route.
(Note 5) For the relationship between the number of route entries and the number of adjacent router/adjacent pe
--- Maximum number of entries by protocols
RIP+OSPF
2,000
2,000
3,000
5,000
(Note 3) (Note 4) (Note 5) (Note 6)
IPv4 unicast
Path entry count
BGP4 (Note 2)
--
20,000
80,000
120,000
No. of ATM V
per NIF
Statics
500 or less 256 or les
500 or less 2,048 or les
1,000 or less 2,048 or les
1,000 or less 2,048 or les