Why rules exist
On the exchange LAN, every member shares the same broadcast domain. One misconfigured router can affect everyone. Peering LAN rules keep the fabric stable.
One MAC address per port
The fabric learns a single MAC per member port. Multiple MACs usually mean a switch or bridge is leaking into the exchange.
Allowed traffic types
Only IPv4, IPv6 and ARP are permitted. Other ethertypes are dropped.
Silence unnecessary protocols
Disable CDP, LLDP, STP, DHCP, router advertisements, OSPF, IS-IS and similar protocols on the interface facing the exchange.
Stick to assigned addresses
Use only the IPv4 and IPv6 addresses assigned to you on the peering LAN.
Disable proxy ARP
A router answering ARP for other addresses can attract traffic it should not receive.
Read the full peering policy before connecting.
