Our core network is based in two carrier-neutral
datacentres; Telehouse Docklands
and Telecity Sovereign House. By locating our core in two of
the best connected sites on the UK Internet, we have diverse
connections to the London Internet Exchange (LINX) and
London Access Point (LONAP), allowing us to offer customers
ultra-reliable services no matter where they need to access
it from. We have built relationships with both datacentres
over the last 5-10 years to ensure we are confident in their
We connect our core sites together using three
diverse links which operate across physically separate
fibre rings with different hardware vendors for the most
reliable service. Our internal core network runs OSPF/OSPFv3
for quick failover in the event a link fails, and we use
BGP4 for customers and peers.
Our core network is based on Cisco Systems 10 Gigabit
routers and switches, including their Service Provider-grade
Cisco 7600-series routers with RSP720-3CXL route processors
and Cisco Catalyst 3750X-series switches.
Monitored rack power distribution units are sourced
from Olson Electronics and server power distribution is
managed with APC Switched Rack PDUs which provide power
control for each outlet. We also use APC Uninterruptible
Power Supply (UPS) systems and Automatic Transfer
Switches (ATSs) in core network racks for additional
protection of critical equipment.
APC environmental monitoring solutions are used for
temperature, humidity and door status for racks in
conjunction with Axis IP surveillance CCTV cameras. Our
cabinets in Telehouse are protected by Abloy Protec high
locks which maintain key control.
Cooper B-Line supply us with their Access cabinets
which provide for excellent airflow options within
different environments as well as easy access to the
side for maintaining tidy cabling.
For our internal use, we use a mix of Dell PowerEdge
and HP ProLiant servers.
Internet Exchanges & Transit
We have diverse multi-Gigabit connections to both LINX
(Juniper & Extreme LANs) and
LONAP as well as Abovenet Communications and other
global tier-1 providers. By peering directly at the two
most significant London Internet Exchange Points, we can
ensure the best connectivity to the major UK broadband
and content networks. In the event that an issue arises,
it also means we can liaise directly with the networks
in question to resolve issues. Our long standing
relationship with Abovenet has been significant in
providing high quality routing to the rest of the world.
With 10Gbps+ of edge capacity, we can cope with clients'
Redundancy & Diversity
We ensure that wherever possible, we introduce
redundancy into critical equipment, such as diverse
uplinks to different core switches/routers, dual power
supplies (fed from diverse power feeds where available),
dual UPS systems, automatic transfer switches, multiple
suppliers for inter-site links, using redundancy
protocols where possible, etc.
We run an autonomous network (AS21396), which means that we do
not rely on any single supplier for our network
connectivity. If one of our transit providers switched
off their entire network, within a matter of seconds,
all traffic would be taking alternative paths. This also
means that we control our routing preferences, and
allows us to 'work around' problems in third party
networks when they cause issues for our clients.
We also offer access to third party networks operated
by other service providers using different upstream
connectivity and thus have the ability to provide a
truly redundant service with a choice of using one or
two datacentres to add physical redundancy under a
single service contract and support facilities.
We monitor everything. It is only by doing so that we
can be sure that we are delivering our customers an
unparalleled service. If a problem arises, we must be
alerted before our clients notice, and we endeavour to
fix problems before they impact on customer service. Due
to the redundancy in our network, most issues are
non-customer affecting. We have hundreds of individual
monitors in place to detect the earliest sign of a
Our network is IPv6 enabled and we can provide IPv6
transit and related services to customers. Find out if your
Internet connection is
IPv6 enabled on thinkbroadband: