Network Technical Specifications
Ports, IPv4 and IPv6
All ports on the LU-CIX public exchange infrastructure are Ethernet and are available at the following speeds:
- 1 Gbps (GE) - 1000BASE-LX
- 10 Gbps (10GE) - 10GBASE-LR
- 100 Gbps (100GE) – 100GBASE-LR4
Additionally, LU-CIX is able to aggregate GE and 10GE ports to provide higher bandwidth trunks.
The LU-CIX infrastructure is based on the Ethernet II (or “DIX Ethernet”) standard. This means that LLC/SNAP encapsulation (802.2) is not permitted.
Frames forwarded to LU-CIX ports must have one of the following Ether types:
- 0x0800 - IPv4
- 0x0806 - ARP
- 0x86dd - IPv6
One MAC address per port
Frames forwarded to an individual LU-CIX 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.
Frames forwarded to LU-CIX ports shall not be addressed to a multicast or broadcast MAC destination address except as follows:
- broadcast ARP packets
- multicast ICMPv6 Neighbour Discovery packets. This DOES NOT include Router Discovery packets.
- multicast is only allowed on the separated Multicast VLAN
No link-local traffic
Traffic for link-local protocols shall not be forwarded to LU-CIX ports.
Link-local protocols include, but are not limited to, the following list:
- ICMP redirects
- IEEE 802 Spanning Tree
- Vendor proprietary protocols. These include, but are not limited to:
- Discovery protocols: CDP, EDP - VLAN/trunking protocols: VTP, DTP
Interior routing protocol broadcasts (e.g. OSPF, ISIS, IGRP, EIGRP)
- ICMPv6 ND-RA
- L2 Keepalives
The following link-local protocols are exceptions and are allowed:
- IPv6 ND