GarrettCom 6KQE User Manual
Magnum 6KQE
Managed Edge Switch
Hardware
Installation and User Guide
www GarrettCom com
..
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
Magnum™ 6KQE
Managed Edge Switch
Hardware
Installation and User Guide
Part #: 84-00182Z (Rev. A)
Trademarks
GarrettCom is a registered trademark and Magnum, Dymec, DynaStar, Personal
Switch, Link-Loss-Learn, S-Ring, Convenient Switch and Converter Switch
are trademarks of GarrettCom, Inc.
Ethernet is a trademark of Xerox Corporation
NEBS is a trademark of Telcordia Technologies
UL is a registered trademark of Underwriters Laboratories
Important: The Magnum 6KQE Managed Edge Switch contains no user
serviceable parts. Attempted service by unauthorized personnel shall render all
warranties null and void. If problems are experienced with Magnum 6KQE
Switch products, consult Section 6, Trouble Shooting.
Copyright © 2009 GarrettCom, Inc. All rights reserved. No part of this publication may be
reproduced without prior written permission from GarrettCom, Inc.
Printed in the United States of America
GarrettCom, Inc. reserves the right to change specifications, performance characteristics
and/or model offerings without notice.
Contacting GarrettCom, Inc
Please use the mailing address, phone and fax numbers and email address listed below:
GarrettCom, Inc.
47823 Westinghouse Dr.
Fremont, CA 94539-7437
Phone (510) 438-9071
Fax (510) 438-9072
Website: http://www.GarrettCom.com
Email: support@garrettcom.com
www GarrettCom com
..
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
Federal Communications Commission
Radio Frequency Interference Statement
This equipment generates uses and can radiate frequency energy and if not
installed and used properly in strict accordance with the manufacturer's instructions, may
cause interference to radio communication. It has been tested and found to comply with the
limits for a Class A computing device in accordance with the specifications in Subpart J of
Part 15 of FCC rules, which are designed to provide reasonable protection against such
interference when operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user, at their own expense,
will be required to take whatever measures may be required to correct the interference.
Canadian Emissions Statement
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil respecte toutes les exigences du Réglement sur le matériel du
Canada. Cet appareil est Classe A.
Electrical Safety requirements:
1. This product is to be installed Only in Restricted Access Areas
(Dedicated Equipment Rooms, Electrical Closets, or the like).
2. 48VDC products shall be installed with a readily accessible disconnect
device in the building installation supply circuit to the product.
3. This product shall be provided with a maximum 10A DC Listed fuse or
circuit breaker in the supply circuit when connected to a 48V
centralized source.
4. The external power supply for DC units shall be Listed, Direct Plug In
power unit, marked Class 2, or listed ITE Power Supply, marked LPS,
which has suitably rated output voltage (i.e. 24VDC or 48VDC) and suitable
rated output current.
5. Product does not contain user replaceable fuses. Any internal fuses can
ONLY be replaced by GarrettCom personnel through the RMA process.
www GarrettCom com
..
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
Table of Contents Page
1.0 SPECIFICATIONS ............................................................................... 1
1.1 Technical Specifications ...................................................................... 1
1.2 Ordering Information ........................................................................... 4
2.0 INTRODUCTION ................................................................................. 6
2.1 Inspecting the Package and Product .................................................... 6
2.2 Product Description - Magnum 6KQE Managed Edge Switch ........... 7
2.2.1 Packet Prioritization, 802.1p QOS ............................................... 8
2.2.2 Frame Buffering and Flow Control .............................................. 9
2.3 Managed Network Software for Magnum 6KQE .............................. 10
2.4 Features and Benefits ......................................................................... 11
2.5 Applications ....................................................................................... 12
3.0 INSTALLATION ................................................................................ 16
3.1 Locating Magnum 6KQE Switches ................................................... 16
3.2 Connecting Ethernet Media ............................................................... 17
3.2.1 Connecting Twisted Pair (CAT3, CAT5, UTP or STP) ............. 17
3.2.2 Connecting Twisted Pair (CAT5e or better, UTP or STP) ........ 18
3.2.3 Connecting Single-Mode Fiber Optic ........................................ 18
3.2.4 Gigabit SFP (Small Form-factor Pluggable) Transceivers ........ 19
3.2.5 Connecting Fiber Optic Cable to SFP Transceivers .................. 19
3.3 Mounting Dimensions for 6KQE with metal brackets ....................... 20
3.3.1 DIN-Rail Mounting the Magnum 6KQE ................................... 21
3.4 Powering the Magnum 6KQE Managed Edge Switch ....................... 22
3.5 Alarm Contacts for monitoring internal power, and Software Traps . 23
3.6 Connecting the Console Terminal to Magnum 6KQE ....................... 24
3.6.1 RS-232 (DB-9) Console port (Serial port) pin assignments ...... 24
4.0 OPERATION ....................................................................................... 25
4.1 Switching Functionality ..................................................................... 25
4.2 Auto-Cross(MDIX) and Auto-negotiation, for RJ-45 ports ............... 26
4.3 Flow-control, IEEE 802.3x standard ................................................. 27
4.4 Power Budget Calculations for 6KQE Modules with Fiber Media ... 28
5.0 Magnum 6KQE Managed Edge Switch Port Modules ..................... 28
5.1 6KQE Modules .................................................................................. 28
5.1.1 6KQE Module LED designations .............................................. 29
5.1.2 6KQE Base Unit LED designations ........................................... 30
5.1.3 6KQE4-RJ45, 4 x 10/100Mb RJ45 (Slot C) ............................. 30
5.1.4 6KQE4-1MMRJ, 1 x MTRJ / 3 x RJ45 (Slot C)........................ 31
5.1.5 6KQE4-2MMRJ, 2 x MTRJ / 2 x RJ45 (Slot C)........................ 32
5.1.6 6KQE4-3MMRJ, 3 x MTRJ / 1 x RJ45 (Slot A, Slot C) ........... 32
5.1.7 6KQE4-1MLC, 1 x LC / 3 x RJ45 (Slot C) ............................... 33
5.1.8 6KQE4-2MLC, 2 x LC / 2 x RJ45 (Slot C) ............................... 34
5.1.9 6KQE4-3MLC, 3 x LC / 1 x RJ45 (Slot A, Slot C) ................... 34
5.1.10 6KQE4-xSLC, LC Singlemode (20km) / RJ45 Module ............ 34
www GarrettCom com
..
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
5.1.11 6KQF-xSLCL, LC Singlemode (40km) / RJ45 Module ............ 34
5.1.12 6KQE-2GCU, 1GCU (Gigabit RJ45 Copper ports) (Slot D) ..... 35
5.1.13 6KQE-2GSFP, 1GSFP (Gigabit SFP Fiber ports) (Slot D) ....... 35
5.2 6KQEP-48VDC, Base Unit w/PoE Power-pass-through ................. 36
6.0 TROUBLESHOOTING ...................................................................... 37
6.1 Before Calling for Assistance ............................................................ 37
6.2 When Calling for Assistance ............................................................. 37
6.3 Return Material Authorization (RMA) Procedure ............................. 38
6.4 Shipping and Packaging Information ................................................. 39
APPENDIX A: WARRANTY INFORMATION ......................................... 39
APPENDIX B : DC Power Input .................................................................... 40
APPENDIX C: Internal DC Dual-Source Power Input Option .................. 43
Revisions:
Rev. A 02/09: Initial Release
www GarrettCom com
..
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
1.0 SPECIFICATIONS
1.1 Technical Specifications
Performance
Filtering / Forwarding Rate:
Ethernet (10Mb): 14,880 pps
Fast Ethernet (100Mb): 148,800 pps
Gigabit Ethernet (1000Mb): 1,488,000 pps
Switching Processing Type: Store and Forward with IEEE 802.3x full-
duplex flow -control, non-blocking
Data Rate: 10Mbps, 100Mbps and 1000Mbps
Address Table Capacity: 4K node, self-learning with address aging
Packet buffer size : 240KB for 10/100 and 120KB for 1000Mb
Latency: 5 μs + packet time (100 to 100Mbps)
15 μs + packet time (10 to 10 Mbps, and 10 to 100Mbps)
Throughput with 8 10/100 and 2Glink max.- 4.17M pps (Transmit)
Back plane- 2.66Gb/s per slot
Network Standar ds and Complianc e , hardware
Ethernet V1.0/V2.0 IEEE 802.3: 10BASE-T,
IEEE 802.3u: 100Base-TX, 100BASE-FX
IEEE 802.3z: 1000BASE-X Ethernet (Auto-negotiation)
IEEE 802.3ab: 1000BASE-X Ethernet
IEEE 802.1p: Priority protocol
IEEE 802.1d: Spanning tree protocol
IEEE 802.1w: Rapid Spanning tree protocol
IEEE 802.1q: VLAN Tagging
IEEE 802.3x: Flow Control
IEEE 802.3ad: Link Aggregation (Trunking)
IEEE 802.1x: Port based Network access control
IEEE 802.3af: Power over Ethernet
Maximum 10 Mbps Ethernet Segment Lengths
Unshielded twisted pair - 100 m (328 ft)
Shielded twisted pair - 150 m (492 ft)
10BASE-FL multi-mode fiber optic - 2 km (6,562 ft)
10BASE-FL single-mode fiber optic - 10 km (32,810 ft)
Maximum Standard Fast Ethernet Segment Lengths:
10BASE-T (CAT 3, 4, 5 UTP) - 100 m (328 ft)
100BASE-TX (CAT 5 UTP) - 100 m (328 ft)
Shielded twisted pair - 150 m (492 ft)
100BASE-FX, half-duplex, multi-mode - 412 m (1350 ft)
100BASE-FX, full-duplex, multi-mode - 2.0 km (6,562 ft)
100BASE-FX, half-duplex, single-mode - 412 m (1350 ft)
100BASE-FX, full-duplex, single-mode - 20.0 km (66K ft)
100BASE-FX, full-duplex, Long Reach - 40.0 km (122K ft)
Maximum Standard Gigabit Ethernet Segment Lengths:
1000BASE-T (CAT5e or higher is recommended) - 100m (328 ft)
1000BASE-SX, full-duplex, multi-mode (62.5μm cable) - 220m
www GarrettCom com
..
1
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
1000BASE-SX, full-duplex, multi-mode (50μm cable) - 550m
1000BASE-LX, full-duplex, multi-mode (50, 62.5μm cable) - 550m
1000BASE-LX, full-duplex, single-mode (9μm cable) - 5km
1000BASE-ZX, full duplex, single-mode (9μm cable) - >70km
Fiber Multi-mode c o nne c tor types supported:
Fiber Port, MTRJ-type (plug-in): SFF Fiber multi-mode 100BASE-FX
Fiber Port, LC-type (plug-in): SFF Fiber multi-mode 100BASE-FX
Fiber Port, 1000BASE-SX, SFP modules
Fiber Single-mode c o nne c tor types:
Fiber Port, LC-type Fiber SFF single-mode, 100BASE-FX
Fiber Port, 1000BASE-LX, SFP modules
LEDs: Per Port (one set at the port, one set on swivel top on right side)
(see section 5.1.1 and 5.1.2 for detailed LED configurations)
Operating Environment
Ambient Temperature:
-40° to 140° F (-40° to 60°C) for UL60950 and Component Parts rating
-40° to 195° F (-40° to 85°C) for IEC 60068 Type Test short term rating
Storage Temperature: -60°to 210°F (-50°to 100°C)
Ambient Relative Humidity: 5% to 95% (non-condensing)
Altitude: -200 to 13,000 ft. (-60 to 4000m)
Conformal Coating (humidity protection) optional: Request quote
Alarm Relay Contacts
One NC indicating internal power, one NC software controllable
Packaging
Enclosure: High strength extruded aluminum
Dimensions: 6.85 in. H x 7.5 in. W x 2.0 in. D
17.4 cm H x 19.1 cm W x 5.08 cm D
Cooling method: Convection, fully-enclosed ribbed-surface aluminum case
used as a sink, designed for vertical mounting, no fans
Weight: 3 lbs. (1.3 kg)
Management Console connector
Serial DB-9, see details at sec. 3.6
DC Power Supply (Internal, floating ground design)
12VDC Power Input nominal (range 8 to 18VDC)
24VDC Power Input nominal (range 18 to 36VDC)
-48VDC Power Input nominal (range 36 to 60VDC)
125VDC Power Input nominal (range 88 to 150VDC)
250VDC Power Input nominal (range 160 to 300VDC)
Std. Terminal Block : “ -, GND, + ”
www GarrettCom com
..
2
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
AC Powe r Supply (Internal)
AC Power Connector: IEC-type, male recessed
100-240VAC Power Input, 47 to 63 Hz (auto-ranging)
Power Consumption:
20 watts Max. (for a fully loaded fiber model with 2Gb)
15 watts Max. (for 8 port copper and 100Mb fiber model)
Dual DC Power Input (Optional)
A Dual-Source option is available for the 12VDC, 24VDC, –48VDC, and 125VDC
and 250VDC models. This provides for continuity of operation when either of the
DC input sources is interrupted. See Appendices B and C.
The Dual-Source Terminal Block is marked : “ +A, -A, -B, +B ”
6KQE Mounting:
Vertical mounting normal. Suitable for wall or DIN-Rail mounting (6KQE)
Agency Approvals and Standards Compliance:
UL listed (UL60950), cUL, CE, Emissions meet FCC Part 15 Class A
NEBS Level 3 and ETSI Compliant
IEEE 1613 Class 2 Environmental Standard for Electric Power Substations
See also Note for Power Substations in Section 3.2.1, 3.6.1, and 5.1.3
IEC 61850 EMC and Operating Conditions Class C for Power Substations
NEMA TS-2 and TEES for DC-powered and PoE-powered traffic control
equipment
Class1 Division 2 and ATEX for hazardous locations, pending
Warranty: Three years, per UL 60950 temperature rating Made in USA
See the Configuration Guide on the GCI web site at
http://www.garrettcom.com/techsupport/insertion_guides/6kqecg.pdf
for configurations and options..
Email
info@GarrettCom.com for additional information.
www GarrettCom com
..
3
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
1.2 Ordering Information
MODEL DESCRIPTION
Magnum 6KQE-24VDC: Magnum 6KQE Managed Edge Switch, base unit with four
10/100 copper ports. Up to 3 100Mb fiber ports or up to four more 10/100 copper
ports (or combinations) may also be configured, and up to 2 Gb ports are optional.
Heavy duty metal case, IP53 for environmental protection, no fans.
For licensed managed networks software (MNS-6K, RS-Ring and S-Ring) including
GUIs for ease-of-use and industry-leading security features, see separate data sheets.
Magnum 6KQE-12VDC: Same as 6KQE-24VDC except the power input is 12VDC
Magnum 6KQE-48VDC: Same as 6KQE-24VDC except the power input is -48VDC
Magnum 6KQEP-48VDC: PoE, same as 6KQE-48VDC except the four 10/100 ports are
PoE-enabled, data pairs
Magnum 6KQE-125VDC: Same as 6KQE-24VDC except the power input is 125VDC
Magnum 6KQE-250VDC: Same as 6KQE-24VDC except the power input is 250VDC
Magnum 6KQE-AC: Same as 6KQE-24VDC except the power input is
AC 100 to 240VAC, 47 to 63 Hz
Please use this URL: for the complete Configuration Guide for the Magnum 6KQE.
http://www.garrettcom.com/techsupport/insertion_guides/6kqecg.pdf
Configuration Options:
Each Magnum 6KQE base unit may be configured with a choice of 2 modular slots.
Following modules can be configured in Slot C only
(Slot C is 10/100 RJ-45 or 100Mb Fiber only)
Magnum 6KQE (Slot C) Port Modules:
6KQE4-RJ45 adds four 10/100 copper ports
6KQE4-1MMRJ adds three 10/100 copper and one MM 100Mb MTRJ fiber ports
6KQE4-2MMRJ adds two 10/100 copper and two MM 100Mb MTRJ fiber ports
6KQE4-3MMRJ adds one 10/100 copper and three MM 100Mb MTRJ fiber ports
6KQE4-1MLC adds three 10/100 copper and one MM 100Mb LC fiber ports
6KQE4-2MLC adds two 10/100 copper and two MM 100Mb LC fiber ports
6KQE4-3MLC adds one 10/100 copper and three MM 100Mb LC fiber ports
6KQE4-1SLC adds three 10/100 copper and one SM 20Km 100Mb LC fiber ports
6KQE4-2SLC adds two 10/100 copper and two SM 20Km 100Mb LC fiber ports
6KQE4-3SLC adds one 10/100 copper and three SM 20Km 100Mb LC fiber ports
6KQF-1SLCL adds three 10/100 copper and one SM 40Km 100Mb LC fiber ports
6KQF-2SLCL adds two 10/100 copper and two SM 40Km 100Mb LC fiber ports
6KQF-3SLCL adds one 10/100 copper and three SM 40Km 100Mb LC fiber ports
MM= Multi-mode fiber SM= Single-mode fiber
www GarrettCom com
..
4
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
Following modules can be configured in Slot D only (Slot D is Gigabit Fiber only)
Magnum 6KQE (Slot D) Port Modules:
6KQE-2GCU adds two auto-negotiating 10/100/1000Mb copper ports
6KQE-1GCU adds one auto-negotiating 10/100/1000Mb copper port
6KQE-2GSFP adds two SFP pluggable open transceiver ports for user selectable SFP
Gb transceivers in each
6KQE-1GSFP adds one SFP pluggable open transceiver port for user selectable SFP
Gb transceiver
Gigabit (1000Mb) SFP (Small Form Pluggable) Transceiver option (6KQE)
SFP-SX Gb SFP transceiver, 1000Mb-SX, 850nm wavelength, 550m
SFP-ESX Gb SFP transceiver, 1000Mb, 1310nm wavelength, 2Km
SFP-LX10 Gb SFP transceiver, 1000Mb-LX, 1310nm wavelength, 10Km
SFP-LX25 Gb SFP transceiver, 1000Mb-LX, 1310nm wavelength, 25Km
SFP-ZX40 Gb SFP transceiver, 1000Mb-ZX, 1550nm wavelength, 40Km
SFP-ZX70 Gb SFP transceiver, 1000Mb-ZX, 1550nm wavelength, 70Km
MNS-6K License- MNS-6K managed software is pre-loaded from the factory.
S-RING Key: S-Ring and RS-Ring Redundancy Manager licensed software for redundant
ring management. One S-Ring or RS-Ring key is for licensed use one 6K-managed self
healing Ring.
CONSOLE CBL: Console attachment cable. Serial null modem (aka X-modem) cable
with DB-9 connectors.
CONSOLE USB: Same as above, but with USB connector
DIN-RAIL-6KQ: Din-Rail mount for a secure vertical mount, with screws for 6KQE
Dual-SRC: Two separate power inputs (12/24/48, 125 or 250VDC)
KQ-CABLE-BKT: Metal bracket for 6KQE, used for cable strain relief, for vertical
mount
CONFORM05 CRM: Conformal coating, heavy duty silicone at 5 mil thickness, for
interior PCBs, PS and modules (for moisture protection)
CONFORM14 CRM: Conformal coating, heavy duty silicone at 14 mil thickness, for
interior PCBs, PS and modules (for oil and gas industry)
www GarrettCom com
..
5
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
2.0 INTRODUCTION
2.1 Inspecting the Package and Product
Examine the shipping container for obvious damage prior to installing this
product; notify the carrier of any damage that you believe occurred during shipment or
delivery. Inspect the contents of this package for any signs of damage and ensure that
the items listed below are included.
This package should contain:
1 Magnum 6KQE Managed Edge Switch, base unit
(configured with user-selected port module options installed)
2 Set of two metal vertical mounting brackets, with screws to the case
1 6KQE Installation and User Guide (this manual)
Remove the items from the shipping container. Be sure to keep the shipping
container should you need to re-ship the unit at a later date.
In the event there are items missing or damaged, contact the party from whom
you purchased the product. If the unit needs to be returned, please use the original
shipping container if possible. Refer to Section 6, Troubleshooting, for specific return
procedures.
www GarrettCom com
..
6
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
2.2 Product Description - Magnum 6KQE Managed Edge Switch
Magnum™ 6KQE Managed Edge Switches provide configurability in an entry-
level industrial-grade package. The high performance 6KQE base unit comes with four
10/100 copper ports (which may be either regular or PoE). Up to 3 100Mb fiber ports or
up to four more 10/100 copper ports or combinations, may also be configured. In
addition, one or two Gb ports may be configured as 10/100/1000 copper or SFP fiber in
any 6KQE base unit.
Magnum 6KQE comes with the best-of-breed MNS-6K managed networks
software. (MNS-6K-SECURE optional) See the Managed Networks Software (MNS-6K)
datasheet for more information at
http://www.garrettcom.com/techsupport/software/datasheets/mns6kds.pdf
Magnum 6KQEs are ideal for building a switched, hardened Ethernet network
infrastructure, connecting edge devices such as PLCs and IEDs with upstream switches
or routers. Designed for use in industrial applications such as factory floors and control
cabinets, industrial video surveillance systems with PoE, power utility substations,
tariffed carrier field facilities, or transportation and oil and gas, the rugged Magnum
6KQE handles stressful workloads (mixes of bursty data traffic and priority streaming
traffic) as well as harsh environmental conditions.
Advanced thermal design techniques with ribbed–surface Aluminum cases for
maximum heat dissipation and a sealed case design enables the unit to operate in harsh
Industrial grade environments efficiently. Heavy duty Ethernet Switch jobs are readily
accommodated with an extended temperature rating of -40˚C to 60˚C by the UL
Component Parts method, or -40˚C to 85˚C by the IEC 60068 Type-Test method. With
options such as several popular DC power input types, AC power and DIN-Rail
mounting, the hardened Magnum 6KQE is a “multi-purpose” Industrial Ethernet Switch.
www GarrettCom com
..
7
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
The 6KQE managed switches also provides a PoE option via power –inside
PoE base unit (6KQEP-48VDC) on Slot A and allows the users to utilize up to 4-ports of
PoE to support 802.3af Powered devices. See details for PoE base unit in sec 5.2. The
Power Sourcing Equipment (PSE) is fully compatible with Powered Devices (PD)(e.g
wireless access points, IP phones) that comply with the IEEE 802.3af PoE standard. The
PoE switch ports have an auto-sensing algorithm, so that they provide power only to
802.3af, PoE end devices. PoE is managed by a multi-stage handshake to protect
equipment from damage and to manage power budgets .The PoE ports will
discontinue supplying power when the PoE powered devices are disconnected. This
feature supports the 802.3af PoE PSE standard for over-current protection, under-current
detection, and fault protection.
High performance features include non-blocking unicast traffic speed on all
ports and 802.1p QoS Traffic Prioritization. Magnum 6KQE switches are “plug-andplay” and are designed for use in connecting edge devices such as PLCs, IEDs and PoE
video cameras with upstream switches and routers where a mix of bursty data traffic and
priority streaming traffic for video surveillance and cell-tower applications are present.
Magnum 6KQE Managed Edge Switches have heavy-duty aluminum cases and
are readily available with standard Industrial grade 24VDC power. Alternative internal
DC power options are available. Internal AC power and DC power input types may be
12V, 24V, 48V, 125V, 250V and dual source DC input is optional on the 6KQE.
Alarm Relay contacts provided on each Magnum 6KQE Switch monitor the
hardware and software through traps, providing a record of any losses of power signals
and other user- defined software events. See Section 3.5 for details.
2.2.1 Packet Prioritization, 802.1p QOS
users from datagram paths that go all across a network. As a LAN device, the Magnum
6KQE can do its part to prevent any QOS degradation while it is handling Ethernet
traffic through its ports and buffers.
Quality of Service means providing consistent predictable data delivery to
The Magnum 6KQE switching hardware supports the IEEE 802.1p standard
and fulfills its role in support of QOS, giving packet processing priority to priority tagged
packets according to the 802.1p standard. In addition to hardware support for QOS, the
MNS software (R2) supports two priority queues that can be shared across the eight
levels of defined packet priorities for application-specific priority control by the user
through software configuration settings.
www GarrettCom com
..
8
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
2.2.2 Frame Buffering and Flow Control
loaded into the Switch’s memory and inspected before forwarding can occur. This
technique ensures that all forwarded frames are of a valid length and have the correct
CRC, i.e., are good packets. This eliminates the propagation of bad packets, enabling all
of the available bandwidth to be used for valid information.
While other switching technologies (such as "cut-through" or "express")
impose minimal frame latency, they will also permit bad frames to propagate out to the
Ethernet segments connected. The "cut-through" technique permits collision fragment
frames (which are a result of late collisions) to be forwarded which add to the network
traffic. Since there is no way to filter frames with a bad CRC (the entire frame must be
present in order for CRC to be calculated), the result of indiscriminate cut-through
forwarding is greater traffic congestion, especially at peak activity. Since collisions and
bad packets are more likely when traffic is heavy, the result of store-and-forward
operation is that more bandwidth is available for good packets when the traffic load is
greatest.
When the Magnum 6KQE Switch detects that its free buffer queue space is
low, the Switch sends industry standard (full-duplex only) PAUSE packets out to the
devices sending it packets to cause “flow control”. This tells the sending devices to
temporarily stop sending traffic, which allows the traffic to catch-up without dropping
packets. Then, normal packet buffering and processing resumes. This flow-control
sequence occurs in a small fraction of a second and is transparent to an observer.
Another feature implemented in the Magnum 6KQE Switches is a collisionbased flow-control mechanism (when operating at half-duplex only). When the Switch
detects that its free buffer queue space is low, the Switch prevents more frames from
entering by forcing a collision signal on all receiving half-duplex ports in order to stop
incoming traffic.
Magnum 6KQE’s are store-and-forward switches. Each frame (or packet) is
www GarrettCom com
..
9
Magnum 6KQE Managed Edge Switch Installation and User Guide 02/09
2.3 Managed Network Software for Magnum 6KQE
Magnum 6KQE comes with licensed MNS-6K Rel v4.1.4 software or MNS-6KSECURE Rel v14.1.4, which allow the user to configure the Magnum 6KQE as a
Managed Switch and implements security features and other software enabled features.
(NOTE: Magnum 6KQE managed switch will work with MNS-6K Rel
v4.1.4 firmware or higher version only, or MNS-6K-SECURE v14.1.4 firmware or
higher version only. Using any earlier MNS-6K versions will not support the 6KQE
hardware)
For additional information about MNS-6K, see the Magnum MNS-6K
Software User guide in pdf format, a separate document normally accessible via your
web-browser, at
or FTP client program at ftp.GarrettCom.com using
All MNS-6K software information, and the documentation related to MNS-6K and MNS6K-SECURE software, can be accessed at GarrettCom’s FTP site.
GarrettCom’s MIBs for SNMP, visit
www.GarrettCom.com/techsupport/index.htm#software
Magnum MNS-6K info.
the Magnum MNS-6K management software and for a useful tool for first time users,
visit
Magnum MNS-6K Operator Training.
You may also email: info@GarrettCom.com
ftp://ftp.garrettcom.com/
user : m6kuser
password : m6kuser
Alternatively, for the latest documentation and information, or needed
and look for the
For interactive training software which shows basic and advanced info about
for further information.
www GarrettCom com
..
10
Loading...