Ruby Tech PSGS-2112C ユーザーズマニュアル

   12-PoE ports allow power to be supplied to end devices, such as Wireless 
    Access Points or VoIP Phones, directly through the existing LAN cables. By 
   supplying the power mid-span, you can centralize power distribution and 
   backup without the need to increase infrastructure.

11, 12 dual media port are provided for flexible fiber connection. You can 

   select to install optional transceiver modules in these slots for short, medium 
   or long distance fiber backbone attachment. Use of the SFP will disable their 
   corresponding built-in 10/100/1000Base-T connections.

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The switch supports not only Layer 2 802.1p Priority Queue control, but a

   supports programmable higher layer classification and prioritization to enable 
   enhanced Quality of Service (Qos) support for real time applications base on
   information taken from Layer 2 to Layer 4, such as VoIP.

The VLAN feature in the switch offers the benefits of both security and 

    performance. VLAN is used to isolate traffic between different users and thus
    provides better security. Limiting the broadcast traffic to within the same 
    VLAN broadcast domain also enhances performance.

 VLAN support enabling

    advanced techniques such as "802.1Q-in-1Q"  to be deployed.

The Gigabit ports can be combined together to create a multi-link load-

    sharing trunk. Up to 6 Gigabit ports can be set up per trunk for bandwidth up 
    to 12Gbps,

 all traffic is aggregated based on MAC addresses, thus balancing

    the traffic load

. The switch supports up to 6 trunking groups. Port trunks are 

    useful for switch-to-switch cascading, providing very high full-duplex speeds

.

802.1x features enable user authentication for each network access attempt.

    Port security features allow you to limit the number of MAC addresses per 
    port in order to control the number of stations for each port. Static MAC 
    addresses can be defined for each port to ensure only registered machines 
    are allowed to access. By enabling both of these features, you can establish 
    an access mechanism based on user and machine identities, as well as 
    control the number of access stations.

For mission critical environments with multiple switches supporting STP, you 

    can configure the switches with a redundant backup bridge path, so 
    transmission and reception of packets can be guaranteed in event of any fail-
    over switch on the network.

To limit too many broadcast/multicast flooding in the network, broadcast/

   multicast storm control is used to 

 

 traffic. Threshold values are 

restrict excess

   available to control the rate limit for each port. Packets are discarded if the
   count exceeds the configured upper threshold.

L2 Managed PoE Switch 

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Gigabit Switch

12-Port GbE L2 Managed PoE Switch with 2 SFP Dual Media 

    ---IEEE 802.3af PoE Standard
    ---IEEE 802.3x Flow Control capability
    ---IEEE 802.1q VLAN
    ---IEEE 802.1p

    ---Supports IEEE 802.3af compliant
    ---Supports Power over Ethernet (PSE)
       on each Gigabit UTP port
    ---Full power support for per POE port
    ---Auto detect powered device and 
       consumption levels
    ---Supports per port power consumption
        monitoring
    ---Smart feature for PD on/off, PD 
       detection, power level, PD status and 
       power feeding priority
    ---Circuit protection to prevent power
       interference between ports
    ---Supports per port PoE State setting
    ---Supports per port power priority 
        setting
    ---LED indicators for POE ready and 
        POE activity 

    Switching capacity:
    ---12 Gigabit Ethernet ports with non-
        blocking wise speed performance
    ---8 K MAC addresses 
    ---208KB on-chip frame buffer
    ---Supports Jumbo frame support, up to 
        9K 
    ---Broadcast/Multicast Storm 
        Suppression
    ---Port Mirroring
    VLAN
    ---Port-base VLAN
    ---IEEE802.1q tag-base VLAN, up to 
       256 active VLANs
    ---Q-in-Q is an efficient method for 
       enabling Subscriber Aggregation
    VSM(Virtual Stacking Management)
    ---Support 16 devices stacking
    ---Multiple switches can be managed via 
        one IP address, just like software 
        stacking

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