Specifications

Copyright © 2009, Juniper Networks, Inc. 29
DESIGN GUIDE - Data Center LAN Connectivity Design Guide
Aggregation at the core also allows for more flexibility and easier support of virtualization but requires very
high-speed processing and HA levels. One of the biggest advantages of this 2-layer design is a dramatic reduction
of the number of devices which offers significant power savings, reduces the facilities footprint of the system,
offers simplified device management, and allows tighter security control. In addition, it also reduces the number of
system failure points. The scalability limitation of this architecture is typically limited by the scalability of the core
network devices.
Figure 17: Aggregation layer collapsed into the core layer in a highly available data center LAN
Features and Benefits4.
When collapsing the aggregation layer using an MX Series router, the resulting configuration creates
operational efficiencies and cost savings with fewer devices to manage and a reduction in power usage and
cooling expenses. The MX Series high throughput ensures optimal performance and HA features while providing
all the functionality provided at the core
M Series
MX Series
WX Series/
WXC Series
SA Series
ISG Series/
IDP Series
NetScreen
Series
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
ACCESS LAYER
WAN
M Series
MX Series
ISG Series
PSTN