Specifications

Hardware Reference 5
Software Release 3.0.2
C613-03092-00 REV C
AT-8900 Series Switch
The AT-8948 switch is the sole model in the AT-8900 Series and meets the
exceptionally high performance demands of high-end applications. It delivers
wire-speed switching performance in a robust 1U rack mount platform.
Environmental
conditions
■ Operating temperature range: 0ºC to 50ºC (32 to 122ºF)
■ Storage temperature range: -25ºC to 70ºC (-13 to 158ºF)
■ Relative humidity range for operation: 5 to 80% non-condensing
■ Relative humidity range for storage: 5 to 95% non-condensing
■ Operational altitude: 3,050 metres maximum (10,000 feet)
Regulatory
standards
■ EMC: EN55022 class A, FCC class A, and VCCI class A
■ Immunity: EN55024, EN61000-3 levels 2 (Harmonics), and 3 (Flicker)—
AC models only
■ Safety: UL60950-1, CAN/CSA-C22.2 No. 60950-1-03, EN60950,
AS/NZS60950, and EN60825-1
■ Certification: UL, cUL, and TUV
Switching core ■ Application-Specific Integrated Circuit (ASIC) switch chip
■ Non-blocking Layer 2 and Layer 3 IP switching
■ 256K IPv4 address table
■ 4K multicast table
■ 4K logical Layer 3 interfaces
■ Shared 32 Mbyte DDR-SDRAM packet buffer
Processing core ■ 350MHz RISC Processor
■ 128MBytes of Synchronous DRAM, expandable to 256MBytes or
512MBytes with DIMM
■ 32MBytes of fixed flash
■ CompactFlash slot for hot-swappable expansion of flash memory up to
128MBytes
■ 512 kBytes of SRAM
■ 32/66 PCI bus for 32-bit/33MHz
■ Silicon ID chip storing serial number, board ID, and MAC address
Optional IPv6
accelerator card
■ Slot for network processor accelerator card that provides accelerated IPv6
unicast and multicast routing in hardware
• 4 K multicast table
• 1000 accelerator hardware filters
• 128MBytes Synchronous DRAM giving 64K IPv6 routes