RuggedCom RS940G User Manual

www.RuggedCom.com

1

RuggedSwitchTMRS940G

RuggedSwitchTMRS940G

8-Port Managed Gigabit Ethernet Switch

The RuggedSwitch™ RS940G is an industrially hardened,
fully managed Ethernet switch providing six or eight ports of
Gigabit Ethernet. Six 10/100/1000BaseTX triple speed copper
ports are standard. An additional two gigabit fiber or copper
ports can be added. The RS940G provides a cost effective
way of connecting a cluster of field devices to a Gigabit
Ethernet backbone.

Designed to operate reliably in harsh industrial environments
the RS940G provides a high level of immunity to
electromagnetic interference and heavy electrical surges
typical of environments found in electric utility substations,
process control or in curb side traffic control cabinets. An
operating temperature range of -40°C to +85°C coupled with
hazardous location certification, optional conformal coating
and a galvanized steel enclosure allows the RS940G to be
placed in almost any location.

The embedded Rugged Operating System (ROS

TM

) provides
advanced networking features such as Enhanced Rapid
Spanning Tree (eRSTP

TM

), Port Rate Limiting and a full array
of intelligent functionality for high network availability
and manageability.

The versatility and wide selection of fiber optics allows the
RS940G to be used in a variety of applications. The RS940G
provides two fiber optical Gigabit Ethernet ports for creating a
fiber optical backbone with high noise immunity and long haul
connectivity.

The embedded Rugged Operating System (ROS™) provides
advanced layer 2 and layer 3 networking functions, and
advanced cyber security features. Coupled with the ruggedized
hardware design, RS940G is ideal for creating mission-critical,
real-time, control applications where high reliability and availability
is of paramount importance.

Ethernet Ports

.6 - 10/100/1000BaseTX Triple Speed Copper Ports Standard
.Optional 2 additional 1000LX SFP Pluggable Gigabit Fiber
.2 - 10/100/1000BaseTX copper ports
.Long haul optics allow Gigabit distances up to 70km

Cyber Security Features

.Multi-level user passwords
.SSH/SSL encryption
.Enable/disable ports, MAC based port security
.Port based network access control (802.1x)
.VLAN (802.1q ) to segregate and secure network traffic
.Radius centralized password management
.SNMPv3 encrypted authentication and access security

RuggedRated

TM

for Reliability in Harsh Environments

.Immunity to EMI and heavy electrical surges



.

Meets IEEE 1613 (electric utility substations)



.

Exceeds IEC 61850-3 (electric utility substations)



.

Exceeds IEC 61800-3 (variable speed drive systems)



.

Exceeds IEC 61000-6-2 (generic industrial)



.

Exceeds NEMA TS-2 (traffic control equipment)

.Hazardous Location Certification: Class 1 Division 2
.-40 to +85°C operating temperature (no fans)
.Conformal coated printed circuit boards (optional)

Rugged Operating System (ROS

TM

) Features

.Simple plug and play operation - automatic learning,

negotiation, and crossover detection

.RSTP (802.1w) and Enhanced Rapid Spanning

Tree (eRSTP™) network fault recovery (<5ms)

.Quality of Service (802.1p) for real-time traffic
.VLAN (802.1q) with double tagging and GVRP support
.Link aggregation (802.3ad)
.IGMP Snooping for multicast filtering
.Port Rate Limiting and Broadcast Storm Limiting
.Port configuration, status, statistics, mirroring, security
.Industrial automation features (eg. Modbus)

Management Tools

.Web-based, Telnet, CLI management interfaces
.SNMP v1/v2/v3
.Remote Monitoring (RMON)
.Rich set of diagnostics with logging and alarms

Universal Power Supply Options

.Fully integrated power supply
.Universal high-voltage range: 88-300VDC or 85-264VAC
.Dual low-voltage DC inputs: 24VDC (9-36VDC)

or 48VDC (36-72VDC)

.Terminal blocks for reliable

maintenance free connections

.CSA/UL 60950 safety approved

to +85°C

ISO 9001:2000

eRSTP

eRSTP

TM

Features and Benefits

eRSTP

eRSTP

eRSTP

RUGGEDCOM

ISO 9001:2000

ISO 9001:2000

CERTIFIED

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2

RuggedSwitchTMRS940G

RuggedSwitchTMRS940G

8-Port Managed Gigabit Ethernet Switch

Optional Dual Gigabit Fiber Ports:

 Pluggable Optics (SFP)

 LC or SC connectors

 Distances up to 70km

Integrated Power Supply

 Universal high-voltage range:

88-300VDC or 85 - 264VAC

 Popular low voltage DC ranges:

24VDC (9-36VDC), 48VDC

(36-59VDC)

 Dual Isolated DC power inputs

Gigabit Copper Ports:

 6 - Triple Speed Copper Ports

(10/100/1000BaseTX)

Critical Alarm Relay

 Form-C failsafe contact relay:

1A@30VDC

RuggedSwitch™ RS940G

Rugged Construction:

 20 AWG. galvanized

steel enclosure

 Conformal coating

(optional)

Operating Temperature

 -40

o

C to +85oC

 No Fans

Mounting Options

 Din Rail

 Panel Mount

Hazardous Location

Certification

 Class1, Division2

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3

RuggedSwitchTMRS940G

RuggedSwitchTMRS940G

8-Port Managed Gigabit Ethernet Switch

Cyber Security

Cyber security is an urgent issue in many industries where
advanced automation and communications networks play
a crucial role in mission critical applications and where high
reliability is of paramount importance. Key ROS™ features that
address security issues at the local area network level include:

.Passwords - Multi-level user passwords secures switch

against unauthorized configuration

.SSH / SSL - Extends capability of password protection

to add encryption of passwords and data as they cross
the network

.Enable / Disable Ports - Capability to disable ports so that

traffic can not pass

.802.1q VLAN - Provides the ability to logically segregate

traffic between predefined ports on switches

.MAC Based Port Security - The ability to secure ports on

a switch so only specific Devices / MAC addresses can
communicate via that port

.802.1x Port Based Network Access Control - The ability

to lock down ports on a switch so that only authorized
clients can communicate via this port

.Radius - Provides centralized password management
.SNMPv3 - encrypted authentication and access security

The ROS™ cyber security features are included to help
address the various industry specific security standards such
as NERC CIP, ISA S99, AGA 12, IEC 62443, ISO 17799:2005
and PCSRF SPP-ICS.

Enhanced Rapid Spanning Tree Protocol (eRSTP™)

RuggedCom eRSTP allows the creation of fault-tolerant ring
and mesh Ethernet networks that incorporate redundant links
that are 'pruned' to prevent loops. eRSTP yields worst-case
fault recovery1of 5ms times the 'bridge diameter' and allows
rings of up to 80 switches. For example, a ring of ten
switches will have fault recovery times under 50ms. eRSTP
implements both STP and RSTP to ensure interoperability
with commercial switches unlike other proprietary 'ring'
solutions.

Quality of Service (IEEE 802.1p)

Some networking applications such as real-time control
or VoIP (voice over IP) require predictable arrival times for
Ethernet frames. Switches can introduce latency in times
of heavy network traffic due to the internal queues that buffer
frames and then transmit on a first come first serve basis.
ROS™ supports 'Class of Service' in accordance with IEEE

802.1p that allows time critical traffic to jump ahead to the
front of the queue thus minimizing latency and reducing jitter
to allow such demanding applications to operate correctly.
ROS™ allows priority classification by port, tags, MAC
address, and IP type of service (TOS).

A configurable "weighted fair queuing" algorithm
controls how frames are emptied from the
queues.

VLAN (IEEE 802.1q)

Virtual local area networks (VLAN) allow the segregation
of a physical network into separate logical networks with
independent broadcast domains. A measure of security is
provided since hosts can only access other hosts on the
same VLAN and traffic storms are isolated. ROS™ supports

802.1q tagged Ethernet frames and VLAN trunks. Port
based classification allows legacy devices to be assigned
to the correct VLAN. GVRP support is also provided to
simplify the configuration of the switches on the VLAN.

Link Aggregation (802.3ad)

The link aggregation feature provides the ability to aggregate
several Ethernet ports into one logical link (port trunk) with
higher bandwidth. This provides an inexpensive way to set up
a high speed backbone to improve network bandwidth. This
feature is also known as "port trunking", "port bundling", "port
teaming", and "ethernet trunk".

IGMP Snooping

ROS uses IGMP snooping (Internet Group Management
Protocol v1&v2) to intelligently forward or filter multicast traffic
streams (e.g. MPEG video) to or from hosts on the network.
This reduces the load on network trunks and prevents
packets from being received on hosts that are not involved.
ROS™ has a very powerful implementation of
IGMP snooping that:

.Can be enabled on a per VLAN basis.
.Detects and filters all multicast streams regardless of

whether subscribers exist.

.Supports "router-less" operation by supporting an

"active" mode.

.Restores traffic streams immediately after an RSTP

topology change.

SNMP (Simple Network Management Protocol)

SNMP provides a standardized method for network
management stations the ability to interrogate devices from
different vendors. SNMP versions supported by ROS™ are
v1, v2c, and v3. SNMPv3 in particular provides security
features (such as authentication, privacy, and access control)
not present in earlier SNMP versions. ROS™ also supports
numerous standard MIBs (Management Information Base)
allowing for easy integration with any network management
system (NMS).

1

eRSTP fault recovery times may be approximated as follows:

For 100 Mbps, fault recovery performance is <5ms/hop
For 1,000 Mbps, fault recovery performance is <5ms/hop + 20ms

ROS

TM

Features