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Traffic Rules

Traffic Rules

Allowed EtherTypes

Only the following EtherTypes are permitted on the IX peering VLAN(s):

  • 0x800 - IPv4
  • 0x806 - ARP
  • 0x86DD - IPv6

Unicast Only

Frames forwarded on the IX shall be Unicast only. Forwarding traffic to a Multicast or Broadcast MAC destination address is prohibited, except for the following:

  • Broadcast ARP packets
  • Multicast ICMPv6 Neighbour Discovery packets (this does not include Router Solicitation or Advertisement packets)

Link-local traffic shall not be forwarded to the IX peering VLAN(s). Link-local protocols include but are not limited to:

  • ICMP redirects
  • IEEE 802 Spanning Tree
  • BOOTP/DHCP
  • ICMPv6 Router Advertisements
  • UDLD
  • PIM
  • L2 Keepalives
  • Interior routing protocol broadcasts (e.g. OSPF, IS-IS, IGRP, EIGRP)
  • Vendor proprietary protocols:
    • Discovery protocols: CDP, EDP, FDP, MNDP
    • VLAN/trunking protocols: VTP, DTP

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

  • ARP
  • ICMPv6 Neighbour Discovery

Prohibited Traffic

The following are not permitted:

  • Proxy ARP - use of Proxy ARP on the router's interface to the IX is strictly prohibited.
  • IP Directed Broadcasts - IP Directed Broadcasts are strictly prohibited.

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IX-assigned LAN addresses shall not be advertised by peers to other networks.