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เอกสารอ้างอิง Network_10G ข้อ 4.3

EX4600 Ethernet Switch

Enterprise Advantages complexity. By adding switches to a Virtual Chassis
The EX4600 delivers a highly available, simple, and scalable configuration, it is possible to grow the number of switch
10GbE solution in a compact and power-efficient platform, ports without increasing the number of devices to manage. As
making it a perfect fit for enterprise networks. switches are added to a Virtual Chassis configuration, backplane
bandwidth demands can be scaled to maintain adequate
Simple
oversubscription ratios. Using just two 40GbE interfaces, Virtual
Virtual Chassis technology on the EX4600 dramatically Chassis bandwidth can start at 160 Gbps and grow to 960
simplifies the enterprise distribution layer, eliminating the need Gbps, forming a LAG on all 12 40GbE interfaces.
for Spanning Tree Protocol (STP), Virtual Router Redundancy
Protocol (VRRP), complex routing, or VLAN configurations. In Highly Available
addition, when deployed in a Virtual Chassis configuration, When EX4600 switches are deployed in a Virtual Chassis
the EX4600 reduces the number of devices to manage and configuration, Junos OS initiates a process to assign a master
can even eliminate network switching layers. A single Virtual (active) and backup (hot standby) switch to manage the
Chassis configuration can span multiple nodes, reducing the configuration. If the master switch fails, an integrated L2
need for larger, more expensive nodes on superior tiers. Juniper and L3 graceful Routing Engine switchover (GRES) feature
Networks Junos operating system, which is common across the automatically switches to the backup to maintain continuous
®
entire EX Series Ethernet Switches product family, accelerates and uninterrupted system operations. The EX4600 switch also
the learning curve by enabling the entire architecture to be includes a number of other high availability features, including
managed with a common set of instructions from a single pane redundant power and cooling, graceful protocol restart, equal-
of glass. cost multipath (ECMP), LAG links distributed across multiple
slots, and quality of service (QoS) to prioritize time-sensitive
Scalable data, nonstop bridging (NSB), nonstop active routing (NSR),
A single EX4600 can support up to 72 10GbE ports (using and unified in-service software upgrades (unified ISSU). Unified
10GbE breakout cables on 40GbE fixed ports) at line rate, ISSU is currently supported only in standalone configurations;
providing a highly scalable solution for the most demanding support in Virtual Chassis configurations will be enabled in a
environments. In addition, Virtual Chassis technology makes future release.
it easy to scale the network while reducing management

EX9214 EX9214

Core

EX4600 MC-LAG EX4600 MC-LAG
Closet A2 Closet B2 Aggregation Closet A2 Closet B2

Access

EX4300 Virtual Chassis EX4300 Virtual Chassis
Closet A1 Closet B1 Closet A1 Closet B1

Building 1 Building 2
Figure 1: EX4600 as an enterprise distribution switch with MC-LAG

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