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Allowed Traffic Types on ExchangeNET

The NZIX NOC reserves the right to disable ports that violate the rules below

Physical Connection

Interface settings

100base and 10base Ethernet interfaces attached to NZIX ports must be set to auto-sensing unless otherwise agreed.

MAC Layer

Ethernet framing

The NZIX 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.

Ethertypes

Frames forwarded to NZIX ports shall have one of the following ethertypes:

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

One MAC address per port

Frames forwarded to an individual NZIX port shall all have the same source MAC address.

No proxy ARP

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

Unicast only

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

  • broadcast ARP packets
  • multicast ICMPv6 Neighbour Discovery packets.

Please note that this DOES NOT include Router Discovery packets

No link-local traffic

Traffic for link-local protocols shall not be forwarded to NZIX ports.

Link-local protocols include, but are not limited to, the following list:

  • IRDP
  • ICMP redirects
  • IEEE 802 Spanning Tree
  • Vendor proprietary discovery protocols (e.g. CDP, EDP)
  • Interior routing protocol broadcasts (e.g. OSPF, ISIS, IGRP, EIGRP)
  • BOOTP/DHCP
  • PIM-SM
  • PIM-DM
  • DVMRP
  • ICMPv6 ND-RA

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

  • ARP
  • IPv6 ND

IP Layer

No directed broadcast

IP packets addressed to NZIX peering LAN's directed broadcast address shall not be automatically forwarded to NZIX ports.

IP addressing

no-export of NZIX peering LAN

IP address space assigned to an NZIX peering LAN shall not be advertised to other networks without explicit permission of CityLink.


 

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