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Our
architecture is a complete Cisco
Network. We utilize fully
redundant Cisco 6509 routers
with the latest SupII/MFSCII
cards with 30 mm pps throughput
(redundant routers and redundant
cards within the router) at the
core and state of the art 3550
L3 switch / routers as
aggregation routers. To further
maximize redundancy we utilize
distributed 2924 XL EN switches
to ensure that single chasis
failure will have minimum
downtime effects on our servers
- unlike many of our competition
who aggregate hundreds of
servers in a single chasis based
switch like the 6500 or 5500
which if it fails its cpu or
power - it takes down many
customers This approach gives us
maximum power failure protection
and switch failure protection to
distribute the load and risk.
We also utilize VLANS to prevent
customer IP space hijacking and
conflicts. By keeping our
network as flat as possible - we
minimize route convergence and
latency in the backbone and
speed the packets to the best
provider through BGP4 on the
core.
Network - we believe in a few
large pipes of quality providers
to handle spikes in traffic and
the occasional DoS attack as
well as unknown traffic patterns
in the case of a primary link
failure. This is why our network
minimum Internet backbone
connection is 1 gig pipes. We
currently have 5 backbone
providers and are publicly
peered with 12 providers
including earthlink. Our current
network consists of Gigabit
links to Abovenet, XO, PCC-BTN,
Telia, Level 3 and the Atlanta
Internet Exchange public peering
point. Your customers and you
will not get bottlenecks due to
small pipes. By having less
providers with a larger burst
capacity we are able to handle
DoS attacks better than many of
our competitors that have chosen
many smaller pipes. This is
because a DoS attack will many
times concentrate itself on one
inbound or outbound connection
and can swamp it if it is only a
100 meg or an oc3. We do not
provision less than GIG circuits
on the backbone. It also allows
us plenty of room to fail back
and forth from provider to
provider without regards to
where the traffic is going to
prefer since any one of our
links has far sufficient size to
handle all of our traffic.
We actively monitor our routers
for key factors including
temperature, cpu and memory
utilization and monitor our
connections for transit latency
and uptime. We are notified
immediately in the event of a
process going out of tolerance
or an outage through our
automated systems which allows
us to respond quickly with
corrective action.
We also monitor all our servers
in the data center for uptime
and immediately notified in the
event of an outage on the
server. |