1.1 Ethernet framing

The AMS-IX infrastructure is based on the Ethernet II (or “DIX Ethernet”) standard. This means that LLC/SNAP encapsulation (802.2) is not permitted. For more information on the differences, see the Ethernet FAQ, question 4.1.2.2 Ethernet typesFrames forwarded to AMS-IX ports must have one of the following ethertypes:

• 0x0800 - IPv4
• 0x0806 - ARP
• 0x86dd - IPv6

1.2 One MAC address per connection

Frames forwarded to an individual AMS-IX port shall all have the same source MAC address.

1.3 No proxy ARP

Use of proxy ARP on the router's interface to the Exchange is not allowed.

1.4 Unicast only

Frames forwarded to AMS-IX ports shall not be addressed to a multicast or broadcast MAC destination address except as follows:

• broadcast ARP packets
• multicast ICMPv6 Neighbour Discovery, Neighbour Solicitation, and MLD packets. Please note that this does not include Router Solicitation or Advertisement packets.

1.5 No link-local traffic

Traffic related to link-local protocols shall not be forwarded to AMS-IX ports. Link-local protocols include, but are not limited to, the following list:

• IRDP
• ICMP redirects
• IEEE 802 Spanning Tree
• Vendor proprietary protocols. These include, but are not limited to:
  • Discovery protocols: CDP, EDP, LLDP etc.
  • VLAN/trunking protocols: VTP, DTP
  • Interior routing protocol broadcasts (e.g. OSPF, ISIS, IGRP, EIGRP)
  • BOOTP/DHCP
  • PIM-SM
  • PIM-DM
  • DVMRP
  • ICMPv6 ND-RA
  • UDLD
  • L2 Keepalives

The following link-local protocols are exceptions and are allowed:

• ARP
• IPv6 ND

Using Application layer protocols to unleash malicious actions against other AMS-IX customers over AMS-IX infrastructure, is forbidden. AMS-IX reserves the right to disable a customer’s port in case of complaints of attacks/abuse originating from such customers. The following list includes, but not limited to, some very well-known attacks that we forbid:

• BGP hijacking
• DNS amplification/flood
• HTTP flood
• NTP amplification
• UDP flood
• ICMP flood
• Simple Service Discovery Protocol (SSDP)

Please get in touch to file a complaint providing information about:

• The timestamp of the event
• The type of the event
• The related prefixes/ASNs
• The parties involved
• Any other relevant information providing appropriate context.

Typically, this information can be found in (but is not limited to) router logs, syslog servers, packet captures, BGP monitoring services.

AMS-IX will investigate to confirm the complaint and take appropriate action.