Specifications

Copyright © 2009, Juniper Networks, Inc. 27
DESIGN GUIDE - Data Center LAN Connectivity Design Guide
Data Center Core Layer
The core layer provides a fabric for high-speed packet switching between multiple aggregation devices or the
access layer in a collapsed network. It serves as the gateway to where all other modules meet, such as the WAN
Edge. The core typically requires 10 GbE interface for high level throughput, and maximum performance to meet
oversubscription levels.
Figure 16: Core layer in a highly available data center LAN
Data Center Core Design Considerations
The core provides high-speed throughput for all data going in and out of the data center. The core layer must provide
resilient, fail-safe Layer 3 connectivity to multiple aggregation devices.
M Series
MX Series
WX Series/
WXC Series
ISG Series/
IDP Series
WX Series/
WXC Series
ISG Series/
IDP Series
EX8200
line
EX8200 line
EX4200
line
EX4200 line EX4200 line
EX4200
line
EX4200
line
EX4200 line EX4200 line
EX4200
line
EX4200
line
ISG Series
WAN EDGE LAYER
CORE LAYER
AGGREGATION
LAYER
ACCESS LAYER
WAN
M Series
MX Series
ISG Series
PSTN