Contemporary Control Systems Compact Managed Switches Software Manual for Console Access - Manual (Page 5)

TD020850-0MG
5
2 History
3/19/2004 Initial Release
5/24/2004 Web Browser Support and VLAN ID range limits
7/20/2004 RapidRing Support
3/01/2005 Added IGMP Snooping, Rate Control & Port Security
9/01/2005 Added STP/RSTP
3/15/2013 Added VLAN content for 16- and 24-port switches; dropped CD-ROM references
3 Introduction
Managed switches in the CTRLink ® family provide capabilities beyond those in both Plug and
Play (PnP) and Configurable Switches. Besides conventional PnP features (auto-negotiation,
10/100 Mbps data rate, half- or full-duplex operation, flow control), a managed switch adds
advanced features usually found only in high-end switches:
Rapid Spanning Tree Protocol (RSTP) provides a standardized network redundancy
scheme with improved network recovery time over Spanning Tree Protocol (STP).
RapidRing™ provides high speed network redundancy — allowing recovery from a link
loss in under 300 ms.
VLAN allows the physical network to be configured as multiple virtual local area
networks — limiting broadcast/multicast domains and improving performance.
Trunking allows ports to be associated in groups — each group functioning as a high-
speed backbone to another managed switch.
QoS provides message priority with one of these priority schemes — port-based, MAC-
based, 802.1p, DiffServ, or TOS.
Rate Control allows variable data rates by port for bandwidth allocation.
Port Security limits port traffic to only those devices with listed MAC addresses.
IGMP Snooping allows multicasts to be limited to only relevant ports.
Port Mirroring copies traffic from one or more ports to a monitoring port.
Programmable Fault Relay provides a dry contact to a supervisory system if the switch
senses a condition such as the loss or addition of a link.
Non-blocking wire-speed operation provides a maximum data rate of 148,810 packets
per second for 100 Mbps Ethernet on all ports at full duplex.
Configuration is typically done through a console port connected to a Windows-based terminal
emulation program such as HyperTerminal. Port parameters (data rate, duplex, flow control)
can be pre-set via the console port or auto-negotiated. Each port supports the PAUSE function
for full-duplex links, and uses the backpressure scheme for half-duplex segments.
Each switch is powered from a low-voltage AC or DC source — with redundant power terminals for
backup considerations. Each unit includes attachments for either DIN-rail or panel mounting. The
front panel features a power LED, a management status LED and bi-colour LEDs for the link status,
activity, and data rate of each port.
This software is used in the EICP_M, EIDX_M, and EISX_M product series.