Extreme Networks ExtremeWare Version 7.8, Troubleshooting Manual

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Summit “i” Series Systems
Advanced System Diagnostics and Troubleshooting Guide 23
Summit “
i” Series Systems
Unlike the BlackDiamond and Alpine systems, the Summit “ i ” series stackables are not modular
systems: all of the system components are integrated into one unit. (See Figure 7 .)
Figure 7: Summit “ i ” series architecture
The Summit CPU subsystem is similar to the CPU subsystem of the BlackDiamond MSM and the
Alpine SMMi in that it is equipped with the same basic hardware components: dual CPUs, memory
(DRAM, NVRAM, and flash memory), console port connectors, management interface, and a PCMCIA
slot.
The Summit switching fabric subsystem uses the same basic set of ASICs (the switch engine ASIC and
the address filtering and queue management ASIC) and memory (packet memory for storing packets;
OTP RAM, PQ RAM, and VPST RAM) that are used on the BlackDiamond and Alpine switches, so it,
too, offers wire-speed switching.
The Summit I/O subsystem provides PHY and MAC functionality in a variety of port configurations
(types of ports and numbers of ports).
AFQM
AS I C
OTP RAM
MAC PHY
MAC
PHY
PHY
PHY
PHY
MAC
PHY
PHY
PHY
PHY
PQ RAM
VPST RAM
SRAM (Packet Mem + FDB)
DN_030A
SE
AS I C
SE
AS I C
SE
AS I C
SE
AS I C
PBUS
256 MB
DRAM
CPU
CPU
Flash
NVRAM