Specifications

Copyright © 2009, Juniper Networks, Inc. 31
DESIGN GUIDE - Data Center LAN Connectivity Design Guide
WAN Edge Design Considerations
The following WAN edge routing platform must offer sufficient high-speed Ethernet ports to provide connectivity
between the WAN and the core or aggregation layer. It also must provide high-performance throughput to the
Internet and WAN.
Connectivity
A WAN edge routing platform must offer sufficient high-speed Ethernet ports to provide connectivity between the
WAN and the core or aggregation layer. It also must provide high-performance throughput to the Internet and WAN.
High Availability (HA)
All WAN edge devices must provide a full complement of HA services to maintain critical WAN connectivity. The
hardware must be robust and offer redundant power supplies and cooling fans. Devices should be paired in active/
active routing states for optimal HA. And an alternate connection to the Internet or WAN must be maintained.
Firewall/VPN
Security must be provided at the WAN edge, including VPN connections to remote locations and users as well as
integrated firewall services to protect against worms, trojans, viruses and other malware. Such services should be
centrally managed to facilitate rapid deployment and minimize ongoing operational costs.
Backup/Disaster Recovery
A data center backbone is a key component in the architecture and WAN Edge design primarily for disaster recovery
reasons considering the scale of processing performed at data centers, and the requirements for regulatory
compliance. As such, the data center backbone supports a variety of computational services such as data mirroring
to assure highly accurate data is represented at multiple data centers. Data replication that supports application
clustering and compliance, data backup and restore services, the reach to a variety of location specific services using
fast and secure connectivity across data centers to support services oriented architecture applications, and lastly
the support for legacy clustering technologies that may require Layer 2 connectivity are all functions that are reliant
upon the a high performance data center backbone.
WAN Edge Layer Design Recommendations
A WAN edge routing platform must offer sufficient high-speed Ethernet ports to provide connectivity between the
WAN and the core or aggregation layer. The Juniper Networks M Series Services Router meets these requirements
and more.
M Series Routing Platform
The M Series platform provides predictably high performance and a modular, carrier-class interface that delivers
secure, reliable and scalable network connectivity.
Features and Benefits1.
Capable of throughput up to 320 Gbps, the M Series multi-service edge router offers a full breadth of
connectivity options from DS0 to OC-192/STM-64 as well as 100 Mbps Fast Ethernet to 10 GbE. The platform
also runs JUNOS Software, providing advanced carrier-class and field-proven routing features including
advanced services such as MPLS, IPv6, hierarchical QoS and multicast in the base system at no additional
license fee or upgrade.
HA2.
The M Series delivers carrier-class HA with fully redundant hardware, including redundant Routing Engines and
Switching/Forwarding Engine Boards. JUNOS Software provides additional software HA features.
Integrated Services3.
The M Series solutions provide the essential security functions required for securely connecting sites over the
Internet, including integrated firewall and IPsec VPN. The platform also supports centralized user security
policy and enables a unique HA option in the form of dynamic route-based VPNs. Virtualization technologies
allow segmentation of the network into many separate zones within a single platform for enforcing compliance
to corporate security policies.
Built in QoS improves bandwidth utilization and Unified Communications performance, it also minimizes
latency, jitter, and packet loss to ensure voice and data performance.