JetNet 6910G-M12

Key Features:

JetNet 6910G-M12


Industrial 7 FE/PoE, 1GbE/PoE, 2GbE Managed High Power PoE Switch

The JetNet 6910G-M12 is the new generation Powerover-Ethernet Switch with M12 rugged connectors for IP surveillance in harsh environment, including Train, MRT and LRV applications. It provides 8 ports PoE/PSE on 7 Fast Ethernet ports and 1 Gigabit port, with device fault bypass function on 2 other Gigabit interfaces. The PSE system enabled 30W high power PoE function in compliance with IEEE 802.3af/at standard. The Switch system can also adapt to several power input ranges to meet different criteria in railway eco system. With the major features above, the JetNet 6910G-M12 is the superior device to construct IP surveillance network on train with multibackup features to ensure the passenger’s safety and the train network reliability.

– 7 Fast Ethernet M12 D-code , 3 Gigabit M12- X-code , M12-A Power, M12-A Console/USB
– Rugged M12 Ethernet, Power, Management connector to prevent damages from shock and vibration
– 8 IEEE 802.3at PSE allocated to 7 Fast Ethernet ports and 1 Gigabit Ethernet port
– 2 Gigabit Ethernet interfaces support Device Fault Bypass function
– Railway Power System design with 100W PoE budget in compliance with safety requirements
– Network Redundancy – MSR (Multiple Super Ring),ITU-T G.8032 ERPS, RSTP, MSTP, Super Chain
– Fully Device Management – SNMP v1/v2c/v3, RMON, Web UI, Telnet and Local Console
– Friendly Device and Network Topology recovery Utility – Korenix View, Korenix NMS
– Advanced Network Security –MAC Security, IEEE 802.1x Port Based access control , IEEE 802.1x Radius Server authentication
– Layer 2 Network Performance – IEEE802.1Q VLAN, Private VLAN, Trunk, Traffic Filtering, DHCP Server/Client, Traffic Prioritize, Forwarding Rate Control
– Real Hardware Watchdog against internal system malfunction
– Railway power system – 110V (HVDC model), 24V (LVDC model)
– Railway Standards- EN50155, EN50121-3-2,IEC61373

Product Details



IEEE 802.3u 100Base-TX IEEE 802.3ab 1000Base-T
IEEE 802.3x Flow Control and Back-pressure
IEEE 802.3af Power over Ethernet
IEEE 802.3at High power PoE
IEEE 802.1AB Link Layer Discovery Protocol (LLDP) IEEE 802.1Q VLAN and GVRP
IEEE 802.1D Rapid Spanning Tree Protocol (RSTP) IEEE 802.1s Multiple Spanning Tree Protocol (MSTP) IEEE 802.3ad Link Aggregation Protocol (LACP)
IEEE 802.1x Port Based Network Access Protocol


Switch Technology  Store and Forward technology with 32Gbps switching fabric
System Throughput 8.3Mega packets per second, 64Bytes packet length
CPU performance 180Mhz ARM-9E /200MIPS performance with 10 seconds hardware based Watch-dog timer          
System Memory 8Mega Bytes Flash ROM, 64Mega Bytes RAM
Transfer packet size  64Bytes ~1522Bytes (include double Tag VLAN)
MAC Address 8K MAC address table
Packet Buffer 1Mega bits shared packet buffer
Transfer performance 14,880pps for Ethernet, 148,800 for Fast Ethernet and 1488,100 for Gigabit Ethernet


monitoring interface
• In-Band Management: Telnet with SSH, Web-Browser with SSL, IPv4/IPv6 SNMP V1/V2c/V3 with SNMP Trap (4 Trap Stations), RMON Groups (1,2,3,9)
• Out-Band Management: Local RS-232 /RJ-45 connector with CISCO like command
System Manage Secure • Telnet/ Local Console support command like interface with Cisco like commands, and offers 4 management sessions only; the system support SSL for HTTP security, SSH for Telnet security
• Mange station secure by IP address and up to 4 Manage stations
• Remote Management login authentication by Radius account/password, key for RADIUS Server authentication
SNMP MIB MIB II, Bridge MIB, Ethernet Like MIB, VLAN MIB, IGMP MIB, Private MIB
Management Utility Korenix View and Korenix NMS for device finding and network topology discovery
Network Time Protocol NTP with daylight saving, localize time synchronize function
IEEE 1588 v1
E-mail Warning
4 recipient E-mail accounts with mail server authentication
System event log
Local and remote log server with authentication
System Auto
Power on firmware upgrade, and configuration update by USB/Memory sticker

Network Performance

Port Configuration Port Link Speed, Link Mode, Link Status and Port Enable/Disable
Port Trunk/ Link
IEEE 802.3ad port aggregation and static port trunking, trunk member up to 8 ports, maximum trunk group up to 4 include Gigabit Ethernet port
VLAN IEEE 802.1Q Tag VLAN with 256 VLAN entries, GVRP supported
VLAN Link Modes: Trunk, Hybrid and Link Access
IEEE 802.1 QinQ  Double VLAN Tag with 1522 bytes frame size
Traffic Prioritize
4 physical queues, supports weighted fair queuing (WRR) and strict priority scheme,
follows COS tag ID, IPv4 ToS/DiffServ information to prioritize the traffic
IGMP Snooping v1/v2c/v3 for multicasting filtering and forwarding with IGMP Query mode, and also support unknown multicasting forwarding policies- drop, flooding to all ports and forward to router port
Rate Control
Ingress/Egress filtering for Broadcast, Multicast, Unknown DA or all packets
Port Mirroring
Online Traffic monitoring on multiple selected target ports
Port Security 
Only permit link partner which with predefined MAC address to access the Ethernet interface
DHCP Client/Server with IP & MAC address binding, DHCP Relay Agent function and DHCP Server with static port based IP assigned function
IEEE 802.1x
Port Based Network Access Control with EAPoL to permit or Deny interface access with Remote RADIUS Server authentication
Power over Ethernet
IEEE 802.3af/at, End-Span wiring architecture 
PoE operating mode
Auto Mode:
IEEE 802.3af/at behaviors with IEEE 802.3at 1-Event for high power IEEE 82.3at 1-event PD device
Forced Mode:
User configured Power consumption budget control with IEEE 802.3 PoE /PD detection, or forced without PD detection
PoE forwarding conductor
M12 D-Code (Port 1~7): V+(1,3), V- (2,4) / M12 X-Code (Port 8): V+ (1,2), V- (3,4)
Power forwarding capability
IEEE 802.3af:15W, IEEE802.3at:30W 
PoE System Power Budget
Power Budget Reserve by PD declaration.
The power budget control system will reserve power for connected PD device, once latest PD device (PoE 8) claimed power over the system surplus power, then the latest PoE will not be active.
System Power Budget: 100Watts / 70°C.

Network Redundancy

Multiple Super Ring (MSRTM ) New generation Korenix Ring Redundancy Technology, Includes Rapid Super Ring, Rapid Dual Homing, TrunkRingTM, MultiRingTM , Super ChainTM and backward compatible with legacy Super RingTM
Rapid Dual Homing (RDHTM )  Multiple uplink paths to one or multiple upper Switch, up to 256 Groups RDH Peer protection
Integrate port aggregate function in ring path to get higher throughput ring architecture
MultiRingTM  Couple or multiple up to 10 Rapid Super Rings in one device, JetNet 6910G supports up to 5 100M rings or 4 100M rings, 1 1000M ring
Super Chain It is new ring technology with flexible and scalability, compatibility, and easy configurable.
The ring includes 2 types of node Switch – Border Switch and Member Switch
Rapid Spanning Tree
IEEE 802.1D-2004 Rapid Spanning Tree Protocol. Compatible with Legacy Spanning Tree and IEEE 802.1w
Multiple Spanning Tree
IEEE 802.1s Multiple Spanning Tree, each MSTP instance can include one or more VLANs, and also supports multiple RSTP deployed in a VLAN or multiple VLANs
Support ITU-T G.8032 ERPS V1 single ring topology, and ERPS v2 multiple rings with ladder topology
Loop Protection
The Loop Protection prevents any network looping caused by RSTP and MSR ring topology change
System Fault Bypass
Link Partner Bypass function on Gigabit port 9,10. Both of Gigabit ports will form as inter- connected mode when switch power shut-down or unstable /non-ready


 Enclosure Port • 100 Base-TX/100Mbps Fast Ethernet: 7 x M12 D-Code, 4-pin, Female M12-D (Conductor #): (#1) TX+/PoE V+, (#2) RX+/ PoE V-, (#3) TX-/PoE V+, (#4) RX-/ PoE V-
• 1000 Base-T/Gigabit Ethernet (Port #8~#10): 3 x M12-X Code 8-pin Female M12-X (Pin #): (#1)(0+)/PoE V+, (#2)(0-)/PoE V+, (#3)(1+)/PoE V-, (#4)(1-)/PoE V-, (#5)(3+), (#6)(3-), (#7)(2-), (#8)(2+)
• Console & USB: M12 A-Code 8-pin Female for RS-232 and USB 2.0 Host for firmware/configuration update
• Power: M12 A-Code 4-pin Male
• 100 Base-TX: 2-pair Cat.5E / Cat.6 FTP/STP cable, EIA/TIA 568B 100-ohm, 100Meters
• 1000 Base-T: 4-pair Cat.5E/Cat.6 FTP/STP cable, EIA/TIA 568B 100Ohm, 100Meters It is recommended uses FTP/STP cable for the railway on-board application
RS-232 & USB M12 A-Code female 8-pin connector
• RS-232: TxD (Pin-1), RxD (Pin-2), Signal Ground (Pin-3)
• USB Host: USB-DATA+ (Pin-5),USB-DATA- (Pin-6), USB-5V(Pin-7), USB-GND (Pin-8)
LED Indicators 100Mbps (Port 1~7): Link (Green on)/Activity (Green Blinking)
1000Mbps (Port 8~10): Link (Green on)/Activity (Green Blinking)
PoE (IEEE 802.3af/ Green): Power forwarding (Green on), PoE Detection (Green Blinking)
PoE (IEEE 802.3at/ Blue): Power forwarding (Blue on), PoE Detection (Blue Blinking)
Power: System Power Ready (Green on)
Sys: System Ready (Green on), System Updating (Green Blinking)
R.S.: Ring Normal(Green on)/ Wrong ring port connective(Green blinking), Ring abnormal (Amber on)/
Device’s ring port disconnect (Amber blinking)

Power Requirement

System Power • JetNet 6910G-M12 HVDC
Typical Input voltage: DC 110V (Un), Variation voltage 77V (0.7Un)~137.5V (1.25Un)
• JetNet 6910G-M12 LVDC
Typical Input voltage: DC24V (Un), Variation voltage 16.8V (0.7Un)~30V (1.25Un)
Power consumption HVDC: 25Watts without PoE/PD loading
LVDC: 20Watts without PoE /PD loading


Installation Wall Mounting
Enclosure Material Steel Metal with textured paint
Ingress Protection IP-30
Dimension (mm) 145.2 mm (H) x 198 mm (W) x 120 mm (D)


Operating Environment -40°C~70°C (100Watts PoE/PD Loading), 0~90%, Non-condensing
Storage Environment -40°C~80°C, 0~90% Non-Condesing
Hi-Pot AC 1.2KV for ports-power, power-case


Railway Standard  EN50155, IEC 61373, EN50121-3-2
EMC EMI: EN50121-3-2/EN50121-1, FCC Class A, IEC/EN61000-6-4
EMS: EN50121-3-2/EN50121-1, IEC/EN61000-6-2 IEC/EN61000-4-2,IEC/EN61000-4-4, IEC/EN61000-4-5, IEC/EN61000-4-6, IEC/EN61000-4-8, IEC/EN61000-4-9
Variation/Shock IEC 61373
Warranty 5 Years