Extreme Networks ExtremeWare Version 7.8, Руководство по устранению неисправностей

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16 Advanced System Diagnostics and Troubleshooting Guide
“i” Series Switch Hardware Architecture
The BlackDiamond Systems
In the context of the advanced system diagnostics suite, the BlackDiamond family of core chassis
switches share the same fundamental hardware architecture: a multislot modular chassis containing a
passive backplane that supports redundant load-sharing, hot-swappable switch fabric modules. On
BlackDiamond systems, each I/O module and MSM represents an individual switch containing its own
switching fabric and packet memory.
Figure 1: BlackDiamond 6800 Series architecture, general block diagram
BlackDiamond 6800 Series Hardware Architecture Differences
In the context of understanding the ExtremeWare diagnostics and their use in troubleshooting system
problems, these are the key hardware distinctions between the BlackDiamond 6816, 6808, and 6804.
• BlackDiamond 6816—Modular chassis with passive backplane; sixteen chassis slots for I/O modules;
four chassis slots for MSMs.
• BlackDiamond 6808—Modular chassis with passive backplane; eight chassis slots for I/O modules;
two chassis slots for MSMs.
• BlackDiamond 6804—Modular chassis with passive backplane; four chassis slots for I/O modules;
two chassis slots for MSMs.
CPU
Subassembly
EXT
MAC
T
o
PHY
T
o
MSM-A
T
o
MSM-B
T
o
Backplane
T
o
Backplane
T
o
Backplane
T
o
Backplane
T
o
PHY
EXT
MAC
INT
MAC
INT
MAC
NVRAM
CPLD
UART
PCMCIA
FLASH
SRAM
MGMT
OTP
PQM
Packet
Memory
FDB
VPST
AFQM
ASIC
(Quake)
Control Bus Control Bus
Control Bus Control Bus
I/O Module (G8Xi) Master MSM (MSM-A)
Master MSM Daughter Card
Control Bus
Data/Packet
Bus (PBus)
Transceiver
(To all other slots)
SE
ASIC
(Twister)
PBus PBus
Backplane
Backplane
DN_033A
MAC
MAC
MAC
MAC
OTP
PQM
Packet
Memory
FDB
VPST
AFQM
ASIC
(Quake)
SE
ASIC
(Twister)
PBus PBus