Enterasys Networks manual Hardware Features, 1 Typical XSR-3020 Topology

System Description

Figure 1-1 Typical XSR-3020 Topology

XSR-3020

Regional site backup:

modem pool

(3rd party RAS)

PSTN (for PPP)
Network	PSTN	Authenticate incoming
		PPP connection with
Primary link:		local authentication database
T1/E1 or serial interface
running PPP	Link backup
	with PPP
	via external
XSR-3020	async modem	XSR-3020
IP subnet		IP subnet

Hardware Features

The semi-modular XSR, shown in Figure 1-2, comes equipped with the following features:

•Standard 1U chassis (1-11/16 inches high by 17 inches wide by 21 inches deep) mountable in a standard 19” rack.

•Broadcom 1250 dual-CPU, 64-bit processor (1700 Dhrystone MIPS @ 600 MHz) with load balancing, 512 KByte on-chip Layer 2 cache, up to two co-issued, load-to-use instruction pairs per cycle, and 32 KByte Instruction and Data caches.

•Internal, universal (100 - 240 VAC) power supply with country-specific line cords.

1-2 Overview