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  • Yoda Communications, Inc.

  • Country: Taiwan
  • City: Hsinchu
  • Address: 2F, 3-1, Industry East Road IX, SBIP
  • Contact Person: Long Chang
Key Specifications

PS-2422L/LF supports 24 10/100Mbps Auto-negotiation, Auto-MDIX Ethernet ports and Power over Ethernet to IEEE 802.3af compliant devices. With the 24-port featuring PoE function, the PS2422L is an ideal solution for wireless AP, VoIP phones, security video cameras. It’s fully compliant with the standards of IEEE 802.3/u/x/z/ab/af. It is equipped with 24 UTP (RJ-45) ports and 2 of which are dual media ports that accommodate optional 10/100/1000Base-T or SFP modules. In addition, the switch implements the QoS (Quality of Service), MAC Filtering Policy, Port Mirror, VLAN and full L2 protocol. The overall network management is enhanced and the network efficiency is also improved to accommodate high bandwidth applications with security.

Key Features

PoE Save Your Power Infrastructure and Installation Cost
24-PoE ports allow power (185W or 500W) to be supplied to end devices, such as Wireless Access Points or VoIP Phones, directly through the existing LAN cables, eliminating costs for additional AC wiring and reducing Installation Cost. It frees your wireless AP deployment from restriction due to power outlet location. By supplying the power end-span, you can centralize power distribution and backup without the need to increase infrastructure.

QoS with Four Priority Queues
The QoS(Quality Of Service) feature provides four internal queues to support four different classifications of traffic. High priority packet streams experience less delay inside the switch, which supports lower latency for certain delay-sensitive traffic. The PS-2422L/LF can classify the packet as one of the four priorities according to vip port, 802.1p priority tag, DiffServ and/or IP TOS. The QoS operate at full wire speed. The actual scheduling at each egress port can be based upon a strict priority, weighted round robin or a mix of both.

Port Mirroring
This mechanism helps track network errors or abnormal packet transmission without interrupting the flow of data. Allow ingress traffic to be monitored by a single port that is defined as mirror capture port. The mirror capture port can be any 10/100 port, 10/100/1000 port. Mirroring multiple ports is possible but can create congestion at the mirror capture port.

Q-in-Q VLAN for performance & security
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.

Isolated Group, Provide Secure for Certain Ports
The isolated group feature allows certain ports to be designated as protected. All other ports are non-isolated. Traffic between isolated group members is blocked. Traffic can only be sent from isolated group to non-isolated group.

Mac-based LACP with Automatic Link Fail-over
Dynamic fail-over means packets will not get assigned to any trunk member port that has failed. If one of the ports were to fail, traffic will automatically get distributed to the remaining active ports.

802.1x Access Control Improve Network Security
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.

802.1d Compatible & 802.1w Rapid Spanning Tree
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.

2 Dual Media for Flexible Fiber Connection

Dual media port 25 and 26 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.

Broadcast/Multicast/Unknown-unicast Storm Control
To limit too many broadcast/multicast/unknown-unicast flooding in the network, broadcast/multicast storm control is used to restrict excess traffic. Threshold values are available to control the rate limit for each port. Packets are discarded if the count exceeds the configured upper threshold.


Standard Compliance

■IEEE 802.3 10Base-T Ethernet(twisted-pair copper)
■IEEE 802.3u 100Base-TX Ethernet(twisted-pair copper)
■IEEE 802.3ab 1000Base-T Ethernet(twisted-pair copper)
■IEEE 802.3z 1000Base-SX/LX Ethernet
■IEEE 802.3x flow control capability
■ANSI/IEEE 802.3 auto-negotiation
IEEE 802.1q VLAN


RoHS Compliance

Subscriber Interface

■Port 1-24 are 10/100Mbps Fast Ethernet ports
■Port 25,26 are Gigabit TP/SFP Fiber auto sense
■Auto-Negotiation and Auto-MDIX
■Backpressure flow control for half duplex
■802.3x flow control for full duplex
Connector: 24 RJ-45 and 2 dual media, RJ-45/SFP



Switching capacity

Non-blocking switch fabric supports up to 24FE+2GbE, ports

8 K MAC addresses

256k packet buffer and 128k control memory

The maximum throughput is 8.8Gbps

With 64 bytes packets throughput is 6.547Mpps


VSM (Virtual Stacking Management)

Supports 16 devices stacking

Multiple switches can be managed via one IP address, just like software stacking

Low cost and easily to establish network environment, not extra hardware require.

Not center on the physical location of wiring closets



Supports SVL/IVL configuration to meet your VLAN requirement

Port-base VLAN

IEEE802.1q tag-base VLAN, 4094 max, up to 256 active VLANs included static plus dynamic entry

IEEE802.1q tag-base VLAN

Flooding unknown vlan frame setting, can flood packet with some vlan tag associated to a invalid/inactive vlan

In tag-base VLAN, supports egress/ingress packet filter

Q-in-Q is an efficient method for enabling Subscriber Aggregation



Port Based (VIP Port), 802.1p , TOS and Diffserv(IPv4/IPv6) based QoS packet classification

Supports four level priority queues to prioritize in-bound and out-bound traffic

Supports two scheduling, WRR and Strict

Supports priority in a Q-in-Q tag


Broadcast Storm Control

Multicast/Broadcast/Unknown-Unicast Storm suppression


Port Mirroring

Support 1: N RX port mirroring

Supports port sniffer function with 3 modes:(TX Monitor Mode, RX Monitor Mode and TX-RX pair Monitor Mode)


Isolated Group

Provide one group allows certain ports to be designated as protected


Restricted Group

Can decide the direction of transmitting packets for the specific port

Rate Limit

Ingress rate limit:
Port 1~24: 1K up to 100Mbps
Port 25, 26: 1K up to 1000Mbps

■Egress rate limit:
Port 1~24: 1K up to 100Mbps
Port 25, 26: 1K up to 1000Mbps


PoE Specification

24 IEEE802.3af PoE PSE ports

Endpoint with 48VDC power through RJ-45 pin 1, 2, 3, 6

PoE-PSE activity LED indicator

185 watts of total power (up to 15.4 watts for 12 ports, or up to 7.7 watts for 24 ports)

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




2 Fast Ethernet +1 Gigabit Ethernet groups

Per-group max 4 members

Provides DA, SA and DA+SA Mac-based trunking with automatic link fail-over


802.1q with GVRP/ GARP


Supports IGMP snooping including active and passive mode




Network Security

802.1x access control

Isolated group

Restricted group

Management Access Policy Control

Static mac, to limit which mac addresses can pass through or not

Mac addresses learning limit, to set up the maximum amount of mac that each port can learn


PS-2422L/LF 24p PoE L2 Managed Fast Ethernet Switch with 2 SFP
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