ZyXEL MGS-3712 91-010-166010B ユーザーズマニュアル

The Metro Ethernet Forum (MEF) is a global industry alliance comprised of more than 145 active members 

representing Carrier Ethernet industry groups. The forum develops technical specifications and 

implementation agreements to promote interoperability and deployment of Carrier Ethernet services 

worldwide. The Metro Switch 3000 Series is aligned with carrier-class standards for Ethernet Private Line 

(EPL), Ethernet Virtual Private Line (EVPL) and Ethernet LAN (E-LAN) of Metro Ethernet Forum (MEF), and the 

Series has been certified as MEF-9 and MEF-14 compliant.

Consistent service quality and reliable connecting ability in a converged network is the key for service 

providers to win customers and build loyalty; therefore the ability to control traffic flow and set traffic 

policy becomes more critical than ever. The Metro Switch 3000 Series offers wire-speed flow control that 

classifies and prioritizes the incoming packets according to the predefine QoS policies that meet 

requirements of service providers.

In terms of classification, the Differentiated Services Code Point (DSCP) field and the 802.1p class of service 

(CoS) field are identified to assess the priority of incoming packets. Classification and reclassification can be 

based on criteria as specific as rules based on IP, MAC addresses, VLAN ID or TCP/UDP port number. For 

bandwidth management, the Metro Switch 3000 Series provides 8 priority queues per port for different 

types of traffics, allowing service providers to set rule-based rate limitations that take full advantage of 

constrained network resources and guarantee the best performance.

Avoiding subscribers affecting each other on a shared network or shared device is a major concern for 

service providers. The Metro Switch 3000 Series offers a complete set of security features to protect user 

data while administrating the traffics. The intrusion lock function detects the “plugged” and “unplugged” 

status change of Ethernet cables, and the switch would deactivate a specific port automatically if needed, 

and the 802.1x authentication can secure the network from unauthorized users. Port security provides the 

ability to deny unauthorized users from accessing the network. 

Moreover, the 802.1x feature cooperating with RADIUS is useful to prevent unauthorized access based on 

username and password (or other credentials) and acts as powerful access control for converged networks 

with mixed wired and wireless access.

The Metro Switch 3000 Series provides a multilayer (L2/L3/L4) ACL suite of sophisticated policy-based 

control mechanisms that enables service providers to deploy easily based on actual network environment 

needs via a Web GUI or command line interface to prevent abnormal or illegal access. The policies can be 

defined to deny packets based on source and destination MAC addresses, IP addresses or TCP/UDP ports.

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