network diagrams
In addition to installing our DSLAM's into exchanges, our network includes links between exchanges, capital cities and the rest of the world, as well as many different types of hardware that helps supply you with such things as email.
Those who are more technically minded should find the following diagrams put together by one of our engineers interesting.
The diagram below shows our national network.
The capital city in each state supports the state, and has diverse links back to Sydney, our International Gateway. These links are geographically diverse to provide protection from major cable cuts and to ensure connectivity. The transmission capacity of the links is also shown.
Sydney then connects to multiple providers to access the internet shown by the light grey links.
We also have Peering links in each city which are shown by the dark grey links.
This can be further broken down into the following diagram which shows the next level of our network setup.
In Sydney we have two Cisco 12416 GSR (Gigabit Switch Routers) for our national core. Each GSR is physically located in separate data centres to ensure maximum uptime and reliability to our customers.
Each border router then has smaller links down to various devices such as our Broadband and Dial termination routers, VoIP and DSLAM equipment. In Perth we also have our customer infrastructure such as Email, Web and DNS hosting.
Again, the light grey links are Transit, and the dark grey links are Peering.
Finally -- ever been interested in how much email goes through our network each day? Check out the following diagram.
Currently, iiNet receives 15 million emails into our network every day.
We use Ironports to supply the best possible level of email filtering available today. They remove spam and virus emails and this reduces the volume by approximately 98%.
The cleaned email is sent to our mail servers where it is available for customers to view via Webmail or download.
We have over 7 Terabytes of disk storage where email waits to be viewed or downloaded.
