Juniper Networks E320 Network Router User Manual


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The E320 and the E120 share a system architecture and common
components:
Switch route processors (SRPs) perform system management, •
routing table calculations maintenance, forwarding table
computations, and other control plane functions.
Switch fabric modules (SFMs) create a distributed shared •
memory switching fabric.
Line modules (LMs) are frame processing and forwarding •
engines for I/O modules.
Power modules distribute redundant power feeds through the •
system to all components.
I/O adapter modules provide the physical connection to the •
network via 10-Gigabit Ethernet, Ethernet, Asynchronous
Transfer Mode (ATM), and Packet over SONET (POS) interfaces.
The placement of these system components are as shown.
E120 Front View Back View
A
E
D
B
C
E320 Front View Back View
B
A
C
D
E
E320 BSR and E120 BSR components (A: SRP, B: LM, C: SFM, D: I/O adapter, E: power)
Broadband
Service Edge
Multiplay
Services
VPN
Services
IP
Voice
Interactive
Multimedia
Gaming
Services
Fixed/Mobile
Convergence
Video
Services
Internet
Access
E120
E320
Business
Services
PON
xDSL
WiFi/WiMAX/3G
Leased Line
(IP or L2)
IP/MPLS Core
Network
E320 and E120 BSRApplications - With industry leading scale andflexibility, the Juniper Networks BSRportfolio underpins video, voice, and
data service delivery, to both residential and business broadband customers.
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