LTE -- What Voice Services?
by Jose Deras
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Juniper Introduces Data Center Switching Infrastructure Juniper Networks introduced a data center switching solution that leverages its EX series Ethernet switches, high-densities of 1 and 10 Gigabit Ethernet (GbE) ports, JUNOS operating software and "virtualized chassis" technology. Essentially, the new data switching solution aims to remove an entire tier of aggregation switches and supporting security platforms typically seen in today's mid-to-large sized corporate data centers.
Juniper achieves this by allowing up to ten 48-port EX 4200 switches to be logically aggregated into a single virtual switch. This saves interconnect and uplink ports, as well as eliminates the need to deploy the typical panoply of security appliances. A single SRX-series platform can now serve this role. Juniper estimates its data center architecture can significantly reduce network complexity and total cost of ownership by up to 52 percent in capital expenditures, up to 44 percent in power, up to 44 percent in cooling and up to 55 percent in rack space.
In addition, by deploying Juniper MX-series edge routers, IP/MPLS Layer 3 VPNs can be mapped via the EX switches directly to individual servers in the data center. Mirroring and back-up applications can also be mapped via VPNs to secondary data centers.
http://www.juniper.net
10-Nov-08
- In January 2008, Juniper Networks unveiled a new family of Ethernet switches running on its JUNOS software and designed to meet the technical, business and economic requirements of a service-enabling network infrastructure. The new EX-series, which includes three Ethernet switching families, the EX 3200, 4200 and 8200, are based on three key tenets -- operational simplicity, carrier-class reliability, and integration and consolidation.
The EX 3200 series switches are fixed-configuration Ethernet platforms offering a simple, cost-effective, standalone solution for low-density regional and corporate office deployments. Installed in wiring closets to provide network access, the 24- and 48-port EX 3200 switches offer plug-and-play 10/100/1000BASE-T connectivity. Full and partial Power over Ethernet (PoE) options are available for supporting IP-enabled devices such as telephones, security cameras and WLAN access points. Optional four-port GbE and two-port 10GbE uplink modules with pluggable optics are also available for supporting high-speed connections to other switches or upstream devices such as routers.
The Juniper EX 4200 series
The EX 4200 series Ethernet switches with Virtual-Chassis technology combine modular systems capabilities with the economics and flexibility of stackable platforms. Target applications include data center, corporate and regional office environments.
Like the EX 3200 switches, EX 4200 series switches offer 24- and 48-port 10/100/1000BASE-T configurations with full and partial PoE and optional GbE and 10GbE uplink modules, plus a 24-port fiber switch offering 100/1000BASE-X support.
The Virtual Chassis technology allows up to 10 EX 4200 series switches to be interconnected over a 128 Gbps backplane, creating a single virtual switch supporting up to 480 10/100/1000BASE-T ports and up to 40 GbE or 20 10GbE uplink ports. All EX 4200 series switches include HA features such as redundant, hot-swappable internal power supplies and field-replaceable, multi-blower fan trays to help deliver maximum uptime.
The Juniper EX 8200 series
The modular EX 8200 series Terabit Ethernet switches are aimed at high-density 10GbE enterprise core and aggregation deployments. Juniper will offer two EX 8200 series switches -- an eight-slot 1.6 Terabit Chassis and a 16-slot 3.2 terabit Chassis.
The EX 8200 switches will feature enterprise-class routing tables and deep, hardware-based packet buffers. Wire-speed 10GbE port densities will scale to 64 ports in the eight-slot chassis and 128 ports in the 16-slot chassis. Two fully-equipped 16-slot EX 8200 switches will fit in a single 42-unit rack, delivering 256 wire-speed 10GbE ports per rack.
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