Custodian runs a fully multi-homed and highly resilient IP Transit service, operating under our own global ASN (50300).

Custodian offer IP Transit services not only from our flagship facility in Kent, but also from both Telehouse North and London Goswell road. Connections can be 10Mbps through to 10Gbps and can be combined with links back to your rack or office building. For further information on our network including uptime reports, peering lists and much more, visit our useful networking information page.

Network Info
BGP / IP TRANSIT NETWORK:

Our network is based entirely on Cisco hardware and has an extremely high level of resilience and diversity in both its physical and logical routing.

Directly connected to 7 x Full Transit Provider Networks:
Directly connected to the following Peering Exchanges:

What is IP Transit?

IP (Internet Protocol) Transit is a service of allowing network traffic to cross a computer network to connect to an Internet Service Provider (ISP) or the internet. IP is the primary protocol in the internet layer, and has the task of delivering packets from source to destination based on the IP addresses supplied by the source in the packet header.

Good IP Transit will have high levels of redundancy and provide low latencies. Using multiple providers and having a densely connected IP network allows ISPs to have the fastest and most reliable connections. Each server has its own IP address that acts as a unique identifier. Data can be sent across the internet in packets using the IP protocol. The packets have 2 components; a header and a payload, with the header containing information such as the source IP address. This enables the receiving router to know where the information has come from. It also contains the destination IP address so the packet can be correctly routed along with other meta-data needed to send the packet to the correct location.

IP Transit

Ipv4 is the most common and first major version of IP protocol utilised, and is the dominant protocol of the internet. With the ever-growing demand of IP addresses, IPv6 has developed to support longer addresses, increasing the potential number of internet users with greater options for variation. At present only 5% of the internet traffic is carried over IPv6.

To be multi-homed to the internet using BGP routing protocol, a network must have its own public IP address range and a public Autonomous System (AS) number. Then connections to two (or more) separate ISPs are established. The routing over these connections is normally controlled by a BGP enabled router. ISPs use peering to improve transit.

Peering is when separate internet networks voluntarily interconnect to enable the exchanging of traffic between the users of each network. Multi-homed IP Transit enables internet traffic to be dynamically routed over multiple carriers’ networks, guaranteeing all data has the optimum choice of routes across the internet. Full multi-homed IP Transit provides full failover access to all routes in the internet, so that if one route becomes unavailable, data can still arrive at its intended destination.

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