General requirements

At least one physical on-net link with SONIX equipment
ASN assigned by RIR
Settlement-free peering only; to exchange paid services between members that depends on SONIX is not allowed
Members are not allowed to use the IX to exchange intra-organization traffic.
Members are only allowed to exchange traffic targeting the Default-free zone (DFZ)
Members must avoid actions that significantly risk overloading the IX service or other members.
Members must avoid actions that can cause mis-direction of traffic
Traffic may only be forwarded towards a member if permission is given by the member

If a member shows a willful disregard for the IX service rules they will be disconnected from the service.

Technical requirements

Only unicast frames with defined source MAC-address are allowed, with the exception of neighbor discovery mechanisms
For all traffic, the following rules apply:
- Frame sizes upto (MTU) 9000 is allowed
- Only Ethernet frame types IPv4 (0x0800), IPv6 (0x86dd) and ARP (0x0806) are allowed
For intra-IX[1] traffic, the following rules apply in addition to the above:
- Traffic destined to the IX subnet must be sourced from the IX subnet
- The following ICMP and ICMPv6 packets are forbidden:
  - ICMP Redirect Message (Type 5)
  - ICMPv6 Router Solicitation (Type 133)
  - ICMPv6 Router Advertisement (Type 134)
  - ICMPv6 Redirect (Type 137)
Members are not allowed to advertise the IX subnet towards other AS networks
Only one MAC-address is allowed per link and is assigned by member
Only one IPv4-address and IPv6-address is allowed per link and is assigned by SONIX

[1] Intra-IX is defined as traffic sourced from or destined to the IX network subnet.

SONIX implements data inspection[2] in order to calculate statistics of how the IX is being used.
- Non-aggregated data is purged after maximum 90 days. Note: SONIX aims to purge such data within 14 days.
SONIX will provide access to data collected from a member port to that member if requested.
SONIX publishes all time series data collected and computed publicly on metric.sonix.network
- Anyone is free to use the public Prometheus API to query these time series and retain them for as long as they want.
- The member’s AS name and number will be exported as part of these metrics.
- SONIX may retain time series data indefinitely.

[2] Using e.g. sFlow and selective traffic mirroring