Hitachi GR2000 manual Rip+Ospf, BGP4 Note

		IPv4 unicast
BCU memory			Path entry count		No. of ATM V
size					per NIF
	---	Maximum number of entries by protocols
		RIP+OSPF	BGP4 (Note 2)	Statics
128MB or more	2,000 or less	2,000	--	500 or less	256 or les
256MB or more	22,000 or less	2,000	20,000	500 or less	2,048 or les
512MB or more	83,000 or less	3,000	80,000	1,000 or less	2,048 or les
768MB or more	125,000 or less	5,000	120,000	1,000 or less	2,048 or les
(Note 1)		(Note 3) (Note 4) (Note 5) (Note 6)

(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