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Advanced Network Control and Management |
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| LACP for Flexible Network Connections |
| IEEE802.3ad (LACP, Link Aggregation Control Protocol) provides
flexible network connections and a redundant path for critical devices.
For example, the EDS-518A allows devices to communicate by
aggregating up to three links in parallel, with a maximum of 8 ports for
each link for an optimal and flexible network. |
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| Port Trunking for Flexible Network Connections |
| Port Trunking allows devices to communicate by designating up to
four trunk groups in parallel. This means that you can use port trunking to double,
triple, or even quadruple the bandwidth of the connection from one
EDS series switch to another. For example, you can aggregate 8 ports
of the EDS-508A to increase the effective bandwidth to 1.6 Gbps. |
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| IEEE802.1X Enhances User Authentication |
| The EDS-500A series supports IEEE802.1X (Port-based Network
Access Control) to restrict port access to authorized users only. Only
authorized users can access the port. Authentication is done using the
local user database or an external RADIUS (Remote Authentication
Dial In User Service) server. |
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| IGMP Snooping and GMRP for Filtering Multicast Traffic |
The EDS-500A and EDS-400A series switches support IEEE802.1D-
1998 GMRP (GARP Multicast Registration Protocol) and IGMP
Snooping, which provide the ability to prune multicast traffic so that it
travels only to those end destinations that require this kind of traffic.
The overall effect is to reduce the amount of traffic on the Ethernet
LAN. |
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| RMON for Efficient Network Monitoring and Proactive Capability |
| RMON (Remote Network Monitoring) is an Internet Engineering Task
Force (IETF) standard monitoring specification that allows various network agents and console systems to exchange network monitoring data. RMON
provides you with comprehensive network fault diagnosis, planning, andperformance-tuning information, and helps you manage your network in
a more proactive manner. If configured correctly, RMON probes deliver
information before problems occur. This means that you can take action
before the problems affect users. |
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| VLAN Eases Network Planning |
| A VLAN is a group of devices that can be located anywhere on a
network, but which communicate as if they are on the same physical
segment. VLANs can be used to segment your network without being
restricted by physical connectionsXa limitation imposed by traditional
network design. Besides, since all automation systems incorporate
sensitive devices that must be protected from unauthorized access,
it is very important to have some type of authentication system set
up that only allows authorized users to access the system. If devices
belong to different VLANs, they cannot communicate with each other,
providing extra security and protection from unwanted invasion or
traffic. The IEEE802.1Q standard and GVRP protocol can exchange the
same interoperable parameters to keep consistent VLAN settings over
the entire network. |
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| QoS Increases Determinism |
Quality of Service (QoS) provides a traffic prioritization capability to
ensure that important data is delievered consistently and predictably.
The EDS-500A and EDS-400A switches can inspect IEEE802.1p/1Q
layer 2 CoS tags, and even layer 3 TOS information, to provide a
consistent classification of the entire network. The QoS capability
of the EDS-500A and EDS-400A improve your industrial networks
performance and determinism for mission critical applications. |
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| Bandwidth Management Prevents Unpredictable Network Status |
| Unlimited bandwidth should not be given to any single device on
a network, particularly in light of what could happen if the device
malfunctions. The most well-known problem is the broadcast
storms caused by setting up the wrong topology, or by devices that
malfunction. The EDS-500A/400A series not only prevents broadcast
storms, but in addition the ingress/egress rate of unicast/multicast/
broadcast packets can also be configured to give administrators full
control of limited bandwidth to prevent unpredictable faults. |
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| Port Lock Limits Access by MAC Address |
| The EDS-500A can use the Port Lock function to assign protected
static MAC addresses to specific ports. Locked ports will not be able
to learn other addresses, but only allow the traffic that comes from the
preset static MAC address, helping to block unwanted invasion and
usage. |
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| Port Mirroring for Online Monitoring |
| In some cases, a network is so large that it is difficult to achieve
the expected level of communications. Industrial communications
applications use more of a command-response style than the file
transfer style used in office network environments. This means that
when first setting up an industrial Ethernet network, control engineers
may need to use a second port to monitor the actual activity between
their devices and computer host. The mirroring port function on the
EDS-500A/400A helps ensure that the system behaves as expected. |
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| Automatic Warning by Event |
Since industrial Ethernet devices are often located at remote parts
of a network, it may be hard for system administrators to know the
status of such devices. The traditional way of determining device
status is to poll devices periodically, but this is not real-time enough
for many modern applications, and also wastes precious computing
resources. A more modern solution to this problem is to use industrial Ethernet switches that provide system maintainers with real-time
alarm messages almost instantaneously when exceptions occur. In
other words, warning messages are triggered actively when the events
occur. In order to handle these requirements, industrial Ethernet
switches need features such as: |
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| Warning by e-mail |
The EDS-500A or EDS-400A sends out a warning
e-mail when an
exception is detected, providing system managers with real-time alarm
messages.
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| Warning by Relay Output |
The EDS-500A and EDS-400A provide two relay outputs that can be
configured to indicate the importance of events when notifying or
warning engineers in the field. In response, engineers can respond
quickly and with the appropriate emergency maintenance procedures
to higher priority messages. |
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| DI for Integrating Other Important Sensors |
The EDS-500A switches have two digital inputs for
integrating sensors into the switches' automatic alarm mechanism.
This is done by redirecting warning messages to an IP network by
e-mail notification.
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| Replacing Faulty Devices |
To reduce the effort required to configure IP addresses, the EDS-500A
and EDS-400A switches are equipped with DHCP/BootP server and
RARP protocol, which are used to set up IP addresses of Ethernetenabled
devices automatically.
In additions, the EDS-500A and EDS-400A switches can also play
a role of DHCP relay agent (with Option 82 support) to forward the
DHCP requests and provide information details(such as the slot ID,
port number and VLAN ID) for the authentication of DHCP server. |
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| ABC-01 Provides A Seamless Backup Solution |
| Via RS-232 console port, users can use Moxa ABC-01 to save and
load the configuration of a Moxa EDS series managed switch easily.
ABC-01 thus eases management of system backup or replacement of a
switch. With the assistance of the ABC-01, users can quickly re-install
a substitute switch (of the same model) and/or recover the entire
system configuration if a switch failure occurs. |
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| Easy Browser-based Configuration |
| The EDS-500A and EDS-400A switches can be configured easily over
the network by web browser, Telnet console, or a Windows utility
provided by Moxa. In addition, it is simple to back up configuration
parameters and update firmware in 500A/400A switches with these
user-friendly tools. |
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| Network Management with EDS-SNMP OPC Server Pro |
| Moxa SNMP OPC Server Pro software package can convert SNMP
into OPC format. The vertical integration of SNMP management
information into existing OPC-based SCADA packages gives the
customer the ability to establish an Ethernet network management
application that is integrated with existing visualization and control
applications. |
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Comparison Chart for Managed Switches |
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*ABC-01 is an RS-232 RJ45-based automatic backup configurator for Managed Switches. For more details, please visit: http://www.moxa.com/product/ABC-01.htm
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