Case Studies

Management of a 5G network using L2TP

5G Mobile network manufacturer

The Challenge

A company involved in the manufacture and installation of multi-gigabit radio technology base stations was running a 5G mobile network trial sponsored by the Department for Digital, Culture, Media and Sport (DCMS). The out-of-band management of the base stations needs to be over an independent 3G or 4G network and routed back to the company's own private network.

The Solution

The company chose to use mobile data SIMs from the ISP Andrews & Arnold (AAISP) which can hand over the data connection via an L2TP Tunnel. A FireBrick FB2900 was chosen as the L2TP server (LNS) that the SIMs connect to. Once installed in to the company's private network the FireBrick gives direct access to each of the remote base stations.

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FB2900 acting as a L2TP server for the management of remote devices

Features Used

Tunnels (100)

L2TP Server

Using the FB2900 as a L2TP Server, remote devices are able to connect through in to the FireBrick and then to the internet network.

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Firewall

IPv4 (and in future IPv6) firewall rules are in place to prevent any unauthorised access to or from the remote locations.

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VLANs

The FireBrick uses a number of VLANs on the LAN interface to network with other servers involved in the management and monitoring of the remote base stations.

(All the network diagrams on these case study pages are very rough representations and are not an accurate representation of live networks)

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