Service Provider Metrics
Comprehensive evaluation criteria for service provider assessment
IPv6 Mobile Roaming
Description
Support for IPv6 when roaming.
Detailed Description
Support for IPv6 when roaming in a foreign country using the mobile data roaming service.
Scoring Criteria
IPv6 Support
Description
Level of IPv6 support and implementation
Detailed Description
Measures the level of IPv6 support: from no support to full native service by default.
The gold standard is for IPv6 to be available by default to all customers using compatible equipment, and enabled by default on all equipment supplied by the provider.
Scoring Criteria
ISP Level Traffic Filtering
Description
Does the service allow inbound connections.
Detailed Description
Generally when providing a connection with routable IPv6 addresses, inbound connectivity should be allowed so that users can host services, access their own systems remotely or participate in peer to peer applications.
Control over what inbound connections are allowed should be controlled by the customer's router.
Some providers block inbound connections, preventing certain applications from working.
Scoring Criteria
Prefix Delegation Size
Description
Size of the IPv6 prefix delegated to customers
Detailed Description
Evaluates the size of the IPv6 prefix provided: /64, /62-/58, /56, /48.
The recommended standard (BCOP-690) is to provide a /56 for home users, and a /48 for business customers. Top marks are awarded for any ISP compliant with the standard.
A single /64 is the bare minimum to provide connectivity, but forces the user to have a single flat network. Without a larger prefix it's not possible to create a separate guest network, or other networks for additional purposes - eg multiple tenants, downstream routers, separate networks for untrusted devices like IoT etc.
Scoring Criteria
Prefix Stability
Description
How frequently the delegated prefix changes
Detailed Description
How frequently (if at all) the IPv6 prefix delegated by the ISP changes.
Scoring Criteria
Provided Equipment Flexibility
Description
Flexibility of the provided equipment
Scoring Criteria
Provided Equipment IPv6 Support
Description
IPv6 support of equipment provided by the provider.
Detailed Description
Level of IPv6 support present in the equipment provided by the supplier (eg phone handset, router).
For a fixed line service this would typically be a router.
For mobile service this would be handsets provided by or directly supported by the telco.
Scoring Criteria
Reverse DNS Control
Description
Ability for users to set reverse DNS entries on the delegated prefix.
Detailed Description
Users may want to set reverse DNS entries on their allocated IP addresses.
This is primarily useful for users who want to host their own email servers, or use services such as IRC that perform reverse lookup checks.
Scoring Criteria
Router - Downstream PD Support
Description
Ability of the ISP-supplied router to provide downstream prefix delegation.
Detailed Description
If the ISP delegates a /56, it is possible to sub delegate smaller prefixes to downstream devices.
Some consumer devices such as Apple TV use this functionality. It is also useful for users who want to chain additional routers.
Scoring Criteria
Router Flexibility
Description
Can users supply their own router, or are they forced to use the one provided.
Detailed Description
Wether the user is required to use the router supplied by the ISP, or can replace it with equipment of their own choice.
The middle ground is where the supplied equipment can be set to a transparent bridge mode, allowing for the customer's own router to operate behind it.
Scoring Criteria
Router Port Control
Description
Does the equipment provided by the ISP allow users to open ports.
Detailed Description
The default provided equipment should provide the facility to open inbound ports.
Not relevant if users are supplying their own router.