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เอกสารอ้างอิง Network_10G ข้อ 4.3

EX4600 Ethernet Switch

Data Center Deployments 10GbE Data Center Bridging and I/O Convergence
The EX4600 Ethernet Switch is designed for low-density data Deployments
center applications where high performance, high availability, and The EX4600 is a full IEEE DCB-based and T11 FC-BB-5-based
energy efficiency are key requirements (see Figure 4). Operating Fibre Channel over Ethernet (FCoE) transit switch, delivering
at wire speed, EX4600 switches deliver up to 1.07 Bpps a high-performance solution for converged server edge access
throughput and a data rate of 1.44 Tbps (full duplex) for both L2 environments. As an FCoE transit switch, the EX4600 provides
and L3 protocols. EX4600 switches can be interconnected in a a pure IEEE DCB converged access layer between FCoE-
Virtual Chassis configuration that also includes EX4300 switches, enabled servers and an FCoE-enabled Fibre Channel (FC)
creating a single logical device that offers a variety of port and storage area network (SAN) (see Figure 6).
density options for mixed server environments. The EX4600 also supports FCoE Initialization Protocol (FIP)
Flexible deployment options enable the EX4600 to support snooping, which provides perimeter protection to ensure that
back-to-front and front-to-back cooling, which ensures the presence of an Ethernet layer does not impact existing SAN
consistency with server designs for hot and cold aisle security policies. The FCoE transit switch functionality, along
deployments. Front and rear facing configuration options ensure with priority-based flow control (PFC) and Data Center Bridging
closer proximity to server ports, optimizing performance and Capability Exchange protocol (DCBX), are included as part of
keeping cable lengths short and manageable. the default software; no additional licenses are required.

For small data centers, the EX4600, when deployed in a Virtual Junos Operating System
Chassis configuration, is ideally suited as an aggregation/core The EX4600 runs the same Juniper Networks Junos operating
switch, aggregating 10GbE expansions from EX4300 Virtual system that is used by other EX Series Ethernet Switches, as
Chassis configurations in the access layer (see Figure 5). well as all Juniper routers and Juniper Networks SRX Series
Customers introducing 10GbE into their server racks can Services Gateways. By utilizing a common operating system,
use the EX4600 to add 10GbE-attached servers, iSCSI, and Juniper delivers a consistent implementation and operation
network-attached storage (NAS) with minimal impact to their of control plane features across all products. To maintain
current switching infrastructure. that consistency, Junos OS adheres to a highly disciplined
development process that uses a single source code, follows

MX Series

Core
10GbE
10GbE
EX9200
Virtual
Chassis

SRX5800
Aggregation

10GbE
EX4300 and EX4600 Virtual Chassis

GbE Servers 1/10GbE Servers
Access

Figure 4: EX4600 provides 10GbE server access in the data center.

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