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GR2000 Installation Guide
2-30 GR2K-GA-1002
Rev 6.03
2.4.2.1 RM-CPU
Each RM-CPU contains one K6-2 [300 MHz] processor and two main memory slots.
Each memory slot accepts a 64 MB memory module (MS64) and a 128 MB memory
module (MS128), thus being able to configure up to 256 MB of memory. In addition,
each RM-CPU of GR2000-4S, GR2000-6H, GR2000-10H, and GR2000-20H includes
one RS-232C AUX port.
2.4.2.2 RM-IO
Each RM-IO has one RS232 console port, two memory card (MC) slots, one
10BASE-T port, and a packet-forwarding ASIC.
2.4.2.3 RMB-CPU
Each RMB-CPU has a common Pentium III (850 MHz) and four main storage (MS)
slots. Since the main storage of 256 bytes (MS256) can be mounted, a memory of 1G
bytesasmaximumcanbemounted.
Being different from RM-IO, BCU-S850S, BCU-H850H, BCU-M850H, and
BCU-L850H have the RS-232C AUX board in RMB-IO.
2.4.2.4 RMB-IO
RMB-IO has two RS232C console boards, two memory card (MC) mechanism slots,
one board of 10BASE-T/100BASE-TX, and a packet forwarding engine (Packet
Forwarding ASIC).
Duplication of BCU is possible only in GR2000-6H, GR2000-10H and GR2000-20H
by mounting two sets of BCU.
GR2000-10H BCU-M300H • RM-CPU (MH) board
• RM-IO (H) board (Built in 6x6 cross bar switch)
BCU-M850H • RMB-CPU (MH) board
• RMB-IO (H) board (Built in 6x6 cross bar switch)
GR2000-20H BCU-L300H • RM-CPU (LH) board
• RM-IO (H) board
BCU-L850H • RMB-CPU (LH) board
• RMB-IO (H) board
Table 2-3 Abbreviation for BCU model names and configuration of each device
Device cabinet
Abbreviation for
BCU model name
Configuration