has experience in the design, implementation, installation, maintenance
and troubleshooting of networks at Executive Estates.
networks typically consist of the following components:
- mid to high-end switches supporting >100 active nodes. These
nodes are defined as live Cat6 Jacks that can have computers,
printers or Voice over IP telephones plugged into them whenever
required with no user intervention to activate the jacks, or reconfigure
the end devices.
- These switches would then be connected to a firewall that protects
the internal network from access by the Internet. This firewall
normally has VPN access setup so that the owner can access his
- The external (untrusted side) of the firewall is then connected
to the Internet to provide access to all the resources available
Access/VPN - Access to the Owners Corporate resources is normally
controlled via the firewall as well, to prevent unauthorized employees
from gaining access to the owners estate and information.
- The internal network can also be designed to carry voice traffic
as well as video (video conferencing/video streaming), security
and environmental information. This information can be encrypted
and sent to remote locations when needed.
Access - The minimum bandwidth used for these estates is a
Full T1 (1.5Mb/sec) connection. Where more demand is expected,
either ATM/IMA or fractional T3 is utilized. Multiple buildings
on the same site (Campus type Estate) - In these situations, multi
strand Single Mode fiber is utilized between buildings. This fiber
is terminated into Gigabit connections on the switches.
Estates - Where the owner has multiple Estates, the systems
can be cloned, so that there is a standardized infrastructure,
with a commonality of spares, and redundancy by multiple backups
from site to site. This also enables the owner to have the option
of remotely managing their other estates, when they are not present.
The minimum recommended bandwidth is again a full T1 for this
- A variety of servers are installed, depending on the client’s
requirements. The minimum is normally a mid to high end NT server,
providing, DHCP, DNS, Web Services, Email Services and NT Domain
(for user authentication and file shares) and a Web/ftp caching
server to provide faster Internet browsing, and faster downloads.
Additional servers may be provided for backup and other tasks.
Power Supply - Even though most of these estates have their
own power generation units, an UPS is very strongly recommended
that will support the network/telco infrastructure. In the event
of an intentional power outage, the Generation unit is normally
compromised as well. This would leave the network/telco and any
security systems that are tied in, unable to notify the appropriate
parties. The Telco connections should be buried as they exit the
Estate, and encased in steel conduit until they reach the Local
Telco access point (Telco Junction Box). Since the UPS is normally
interior to the estate, it provides additional time for notification
Racks - These normally will carry all the network, server,
UPS and Cat6 Interconnect cables, panels, and will be organized
in a logical manner to present the best possible appearance when
viewed by the owner. These racks will be braced for Earthquake
safety, and may be ordered with lock assemblies where required.
Room - Normally a separate room is designated for the Network/Telco
equipment as this must meet certain environmental criteria. It
also helps to control the heat and noise generated by the equipment,
as well as protect it from the casual mischief that may occur.
Concerns - SNS is proud to partner with Engineered Environments
who covers both Security and Environmental aspects of Executive