The world's first full-service, scalable GRX Peering Exchange for the interconnection of mobile networks was created at AMS-IX in 2001. Originally set up to exchange GPRS/3G data, this AMS-IX GRX has since become the major mobile peering point for the exchange of mobile roaming data (3G/4G/5G). Currently 25 GRX providers exchange traffic with each other on behalf of their customers, MNOs, at one or more of the twelve AMS-IX peering locations in Amsterdam. The AMS-IX GRX facilitates global data roaming for mobile end user customers and is therefore a core component in enabling a truly global mobile Internet.
The below explains how a GRX provider can connect to the AMS-IX GRX peering exchange.Requirements before applying
The application process consists of the following steps:
The above steps are further detailed below.
The following diagram outlines the parties involved and their relations.
Two mailing lists have been set up to discuss:
The AMS-IX port application process has the following steps:
In case the GRX provider needs (more) rack space to house the GRX equipment, the GRX provider must arrange this with the housing provider of the chosen AMS-IX site. Once the equipment has been installed the GRX provider orders the housing provider to install the correct cabling (typically a fiber cross connect) from its equipment to the AMS-IX VLAN port.
Connectivity from the GRX provider's GRX network to its equipment at the colocation must be arranged by the GRX provider if needed. Information can be obtained from the colocation regarding carriers already offering connectivity services into the colocation.
The following steps must be taken:
In order to actually exchange traffic a bilateral peering agreement between two GRX providers must be agreed upon and implemented. Such a peering agreement covers at least the exchange of routing information via BGP and the exchange of AS and IP address plans.
Once the peering agreement has been established, the GRX providers are ready to implement roaming traffic exchange between two PLMNs that are connected to both GRX providers respectively.