JetNet 5228G/ 5228G-DC Overview

Overview
Specifications
Ordering Information

Datasheet

24+4G Rackmount Managed Ethernet Switch

24 10/100-TX and 4 Gigabit RJ-45/SFP combo ports(10/100/1000 Base-TX, 1000 Base-X)
Design for the Building, Control Room and Telecom applications
24+4G Non-Blocking Switching performance
Supports Jumbo Frame up to 9,216 byte
802.1s Multiple Spanning Tree Protocol
Link Layer Discovery Protocol (LLDP), SNMPv3, SSL, SSH management
Advanced Security by 802.1x, Radius and Layer 2/4 Access Control List
Advanced VLAN protocols, Protocol VLAN, Private VLAN and VLAN stacking (QinQ) for telecom service provider
Fan-less Design
90-264VAC power input or 12-48VDC

The JetNet 5228G series, a 19-inch 24+4G standalone Managed Ethernet Switch, is equipped with 24 10/100 Base-TX ports plus 4 Gigabit RJ45 / MINI GBIC combo ports. It is a special design for building, control room and telecom applications where high-port density and performance are required. The device is mounted within the 19 inch rack, along with other 19 inch public servers or other network devices. It also supports Jumbo Frame, forwarding up to 9.2Kbytes. Furthermore, the transmission of large files in industrial environments becomes more efficient and solid. The advantage of choosing the JetNet 5228G series is that it supports 4 gigabit ports which allow users to trunk up to 8G uplink bandwidth, load balancing, path protection, to form network redundancy or apply MSTP to connect
RSTP from different VLAN.

To fulfill the advanced management, control and security requests in industrial buildings and control
rooms, JetNet 5228G series supports various advanced software features. The protocol VLAN,
private VLAN, VLAN stacking, QoS, IGMP Snooping, layer 2/4 Access Control List, 802.1x, SNMP V3, LLDP, etc. complete the demand and greatly satisfy technicians’ requests. Furthermore, the low power consumption and the fan-less design enhance the benefits on the industrial requests.

High Bandwidth and Performance
JetNet 5228G series supports 4 gigabit combo ports and up to 9,216 bytes jumbo frame.
Why 4 gigabit combo ports?

Act as the access switch, two gigabit ports for lower network, one or two for upper connection.
The upper connection can be aggregated with up to 8G bandwidth in full duplex mode.
4 Combo Ports Design to save stock of storing different kinds of transceivers.
2 Gigabit ports for forming rings, the other 2 for connecting to public servers.

What is Jumbo Frame?

The typical Ethernet frame is range from 64 to 1518 bytes. This is sufficient for general usages. However, when users want to transmit large files, the files may be divided into many small size packets. While the transmitting speed becomes slow, 9.2KBytes Jumbo frame can solve the issue.

Jumbo Frame examples:

Transmitting large files, like the size of the LCD’s bitmap type circuit may up to 800MB.
Network servers usually progress backups for large of files.

802.1s Multiple Spanning Tree Protocol
The JetNet 5228G series supports 802.1s Multiple Spanning Tree Protocol (MSTP). The switch with
MSTP enabled can select the root switch for each instance, block and form the forwarding path for each instance. Each instance represents for one VLAN. It is the limitation in STP/RSTP as the 2 traditional protocols only can block one path for all the existing VLANs in the same environment.

Example: Instance 1 represent for VLAN 20. Instance represent for VLAN 10.
In instance 1, there are one root and one blocking path. The VLAN 20 data can be transmitted from
switch 3 to 1 to 2 or vise versa.
In instance 2, there are another root and another blocking path. The VLAN 10 data can be transmitted
from switch 3 to 2 to 1 or vise versa.

Advanced VLAN Features
JetNet 5228G series is specially designed to meet the Telecom/Internet service provider’s requests. It provides many advanced VLAN protocols, Protocol
VLAN, Private VLAN, VLAN stacking (QinQ) and Multicast VLAN Registration (MVR).

Protocol VLAN
Protocol VLAN allows you to create VLAN for the specific L3 protocols’ packets, like the IP VLAN, IPX
VLAN and AppleTalk VLAN. Different protocols' traffic
is limited with the VLAN and can’t be forwarded to
the other VLANs.

Private VLAN
The private VLAN allows ISP to direct client ports'
traffic to uplink port only. The uplink port to upper
switch/router acts as the Primary VLAN. The client
VLANs act as secondary VLAN. There are 2 types of
secondary VLAN, isolated or community. The isolated
clients can only forwrd traffic to uplink port, they can't communicate with other secondary VLANs. The
clients within the same community can forward traffic
to uplink port and communicate with other members
within the same community.

Multicast VLAN Registration (MVR)
Multicast VLAN Registration (MVR) is a useful
application to lower the multicast stream loading
of the source port. In traditional multicast program,
when hosts that belong to different VLANs require
the same multicast programs, the source station
copy the multicast data and forward to each VLANs
through the same router port. The result is waste of
the network bandwidth.
To solve this problem, you can enable the MVR
feature on 5228G. Assign the MVR multicast VLAN
and available MVR multicast groups for the source
station. Configure the MVR source or receiver for the ports. So that the hosts belongs to different VLANs
can receive the same multicast program but can’t
communicate with each other.

Advanced Security by Layer 2/4 Access Control List
In industrial building and control room installations, the multi types of advanced security features are
required and must be implemented. The secured access control list (ACL) makes it easy to limit certain
devices communicating with the other addressed devices and by the specific protocol. Example rules
include (1) the administrator to multiple stations, (2) stations to stations and (3)stations to public servers…etc.

The ACLs provide “Permit” and “Deny” rules for any or specific host. The IP address, MAC address and port ID are the destinations allowed to be applied the rules. The protocol ID, QoS tag, TCP flag…are the operations which users prefer to control. The JetNet 5228G series equipped with one layer 2+ switch fabric which provides flexible ACLs for the specified subjects and operations within the same LAN.

Link Layer Discover Protocol
The Link Layer Discover Protocol (LLDP) was formally ratified as IEEE 802.1AB-2005. LLDP is
the Layer 2 protocol that allows the network device/station to advertise connectivity & management
information, the identity & major capabilities, receives and establishes network management information on the local same network. In industrial environments, most vendors provide their own discovering protocols, window utility or other tools to manage their switches. The LLDP protocol fixes the interoperability among them. With LLDP supported, users can easily browse the network devices and establish the network management information schema about the stations.

JetNet 5228G Appearance

Dimensions (Unit -mm)