ETHERNET SWITCHES – Item No.
Special Provision No. 683S25
1.
September 2010
SCOPE
This Special Provision covers the requirements for the installation, and testing of Ethernet Switches. The
Ethernet switches shall be interconnected to form an Ethernet network enabling communications to ATMS
field equipment.
2.
REFERENCES
This Special Provision refers to the following standards, specifications, or publications:
Institute of Electrical and Electronics Engineers:
IEEE 802.3-2005
IEEE Standard for Information technology - Telecommunications and information
exchange between systems - Local and metropolitan area networks - Specific
requirements Part 3: Carrier Sense Multiple Access with Collision Detection
(CSMA/CD) Access Method and Physical Layer Specifications
Electronic Industries Alliance / Telecommunications Industry Association:
TIA/EIA-568-B
Commercial Building Wiring Standard
EIA-RS-310-D
Cabinets, Racks, Panels and Associated Equipment
3.
DEFINITIONS
For the purpose of this Special Provision, the following definitions apply:
Cat 5e cable: means a twisted pair cable type designed for high signal integrity. Currently defined in
TIA/EIA-568-B. Provides performance of up to 100 MHz, and is frequently used for both 100 Mbit/s and
gigabit Ethernet networks.
Latency: means the delay between the initiation of a network transmission by a sender and the initial receipt
of that transmission by a receiver. It is typically commensurate with the distance the signal must travel, but is
also affected by delays introduced in network routing, including queues, multiple routes, packet loss, etc.
MAC Address: in computer networking means a Media Access Control address (MAC address) is a unique
identifier attached to most network adapters.
Rapid Spanning Tree: is an evolution of the Spanning Tree Protocol; it was introduced in the extension
IEEE 802.1w, and provides for faster spanning tree convergence after a topology change. Standard IEEE
802.1D-2004 now incorporates RSTP and obsoletes STP.
SNMP: means simple network management protocol (SNMP) which forms part of the internet protocol suite
as defined by the Internet Engineering Task Force (IETF). SNMP is used by network management systems to
monitor network-attached devices for conditions that warrant administrative attention.
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Spanning Tree: means network protocol as defined by standard IEEE Standard 802.1D.
4.
DESIGN AND SUBMISSION REQUIREMENTS
4.1
Submission Requirements
The Contractor shall supply the specification sheets for the Ethernet switches to the Contract Administrator
for review prior to ordering.
5.
MATERIALS
5.1
General
5.1.1
The Ethernet switches shall be capable of transmitting Ethernet packets at a rate of a gigabit per
second, as defined by the IEEE 802.3-2005 in a full duplex communications mode.
5.1.2
The device shall continually diagnose and provide external visible indication of, but not limited to,
power status, link integrity on each electrical/optical port, and data activity on each electrical/optical
port.
5.1.3
The device shall be capable of interconnecting a minimum of 30 switches together in a ring topology
with a minimum 30% load on the network.
5.1.4
Each device shall support spanning tree protocol and rapid spanning tree protocol as defined in IEEE
802.1d and 802.1w.
5.1.5
The Ethernet switches shall provide support remote network management intelligence and
configuration capabilities. At a minimum, the system network management/configuration shall be
achieved through a web browser or telnet terminal session. The device shall include all software and
licenses required.
5.1.6
Switching latency of the Ethernet switches shall not exceed 10 μs.
5.1.7
The device shall have a minimum mean time between failure (MTBF) of 70,000 hours.
5.1.8
The Ethernet switches shall be suited to EIA 480 mm rack mounting, or secured to a shelf to facilitate
EIA 480 mm rack mounting. Any required shelf shall be provided with this item.
5.1.9
The manufacturer, model number, serial number, and firmware version of the device shall be visible
on the outside casing of the device.
5.1.10 The devices shall be capable of supporting not less than 1024 MAC Ethernet addresses. The data
held in the MAC table shall be automatically aged and managed by the switches to maintain the most
current data in the limited MAC addressing table space.
5.1.11 The Ethernet switches shall be compliant with the IEEE 802 specification family for hardware
features implemented. At a minimum, this shall include 802.3u (Fast Ethernet 100Mbps), 802.3z
(Gigabit Ethernet 1000Mbps fibre), 802.3x (Full Duplex with flow control), 802.1p (QOS Priority
Queuing), 802.3q (VLAN), 802.3w (Rapid Spanning Tree), and 802.3ad (Port Trunking).
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5.1.12 The devices shall be interoperable with other manufactured Ethernet switches while still achieving all
common Ethernet standards.
5.1.13 The device’s management functionality shall be via SNMP V2 or higher.
5.1.14 The Ethernet switches shall be able to restore Ethernet services if any optical path on a redundant ring
is broken.
5.1.15 The Ethernet switch shall be able to compensate for any packet loss.
5.2
Environmental
5.2.1
The Ethernet switches shall be fully operational in external ambient temperatures ranging from –10 to
+ 50 °C and relative humidity 10 to 95% non-condensing.
5.2.2
The switches shall withstand a storage temperature range from –40 to +74 °C without incurring
damage.
5.3
Electrical
5.3.1
The Ethernet switches shall be externally powered using input voltage of 115 VAC ± 15%, 60 Hz ±
5%.
5.3.2
The Ethernet switches power supply shall have no exposed power connectors.
5.3.3
All power supplies and electrical modules shall suppress unintended radio frequency emissions to
CRTC criteria.
5.4
Communications
5.4.1
General
5.4.1.1 The Ethernet switches shall interface to the fibre optic network through 2 pairs (Rx, Tx) of 1000LX
singlemode optical fibre ports.
5.4.1.2 Optical ports shall have connectors fitted with LC or SC female optical connectors suited to 9/125µm
singlemode cores.
5.4.1.3 The Ethernet switches shall interface to other Ethernet terminal and communication equipment via
10/100BaseTX electrical ports on the switches.
5.4.1.4 The devices shall support auto negotiation on all 10/100BaseTX electrical ports. All electrical ports
shall be compliant with the EIA/TIA-568-A standard pinout.
5.4.1.5 The devices shall have an optical link budget to facilitate communications of at least 20 km distances.
5.4.1.6 The Ethernet switches optical receivers shall avoid optical saturation when two of the same devices
are connected 100 m apart or greater. If optical saturation occurs on links less than 100 m apart, the
Contractor shall supply optical attenuators to prevent saturation.
5.4.2
September 2010
Field Switches
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The field Ethernet switches, intended for placement at remote field cabinets, shall have a minimum of 6 10/100BaseTX electrical ports.
5.4.3
Head-end Switches
The head-end Ethernet switches, intended for placement at remote communications hubs, shall have a
minimum of 12 - 10/100BaseTX electrical ports.
5.4.4
Central Switches
The central Ethernet switches, intended for placement at the TOCs communications rooms, shall have a
minimum of 24 - 10/100BaseTX electrical ports.
5.5
Network Cabling
5.5.1
The Contractor shall supply interface cables and connectors required to connect the switch to the
associated equipment and/or patch panels detailed in the Contract Drawings.
5.5.2
The cables shall be CAT 5e or better.
6.
EQUIPMENT – Not Used
7.
CONSTRUCTION
7.1
Installation and Configuration
7.1.1
Prior to installation of Ethernet switches the Contractor shall perform PIT bench testing of the devices
in the network configuration detailed in the Contract Drawings.
7.1.2
The Ethernet switches shall be installed in locations and/or cabinets identified in the Contract
Drawings.
7.1.3
The Contractor shall install the Ethernet switches as per the manufacturer recommended installation
procedure.
7.1.4
The Contractor shall connect the Ethernet switches power supply cord to the output receptacles on the
uninterruptible power supplies (UPS) in the controller cabinets.
7.1.5
If an external power supply component is required for the operation of the switches, means shall be
provided to securely fasten the connector to prevent it from becoming accidentally dislodged.
7.1.6
The Contractor shall configure an IP address for the Ethernet switches based on the information
provided by the Contract Administrator.
7.1.7
The Contractor shall configure all user names and passwords for the Ethernet switches based on the
information provided by the Contract Administrator.
7.1.8
The Contractor shall install all interface cable connections between the Ethernet switches and
associated equipment. All cables shall be labelled identifying the associated equipment connection.
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7.1.9
The Contractor shall neatly train and organize all cables. No cables shall be installed with a radius
less than the manufacturer’s minimum recommended bending radius.
7.2
Quality Control
The Contractor is responsible for all testing and documentation required to establish approval and acceptance
of installation and operation of this equipment. The framework of the approval process shall be as specified
elsewhere in the Contract Documents.
The following table details the clauses within this Special Provision, which are to be validated through the
PIT, POP, and SIT processes as indicated:
CLAUSE
PIT
POP
SIT
5.1.1
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5.1.2
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5.1.3
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5.1.4
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5.1.5
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5.1.6
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5.1.14
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5.2.1
1
5.4.1.5
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5.4.1.6

7.1.1
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Testing Footnotes:
1
Environmental testing certificate verifying the stated environmental requirements shall be provided as
a condition of equipment acceptance.
8.
QUALITY ASSURANCE
The Owner may conduct independent testing of the Ethernet Switches supplied to verify their interoperability
with other Ethernet switches already owned.
9.
MEASUREMENT FOR PAYMENT
Measurement for payment of the number of Ethernet switches is by Plan Quantity, as may be revised by
Adjusted Plan Quantity.
The unit of payment is each.
10.
September 2010
BASIS OF PAYMENT
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Payment at the Contract price for the above tender item shall be full compensation for all labour, Equipment
and Materials required to do the work and the production of all drawings, text and test results, except SIT
which is paid for under a separate item.
WARRANT:
September 2010
Always with this tender item.
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