Mac Multicast Addresses - Hirschmann MACH 4000 User Manual

Multicast Routing

9.1.2 MAC Multicast Addresses

The IEEE calls the 48-bit MAC address an "Extended Unique Identifier".
It is the unique identifier of a device. The first 24 bits of the MAC address
(Organizationally Unique Identifier, OUI) is assigned by the IEEE to the
manufacturer. The manufacturer uses the last 24 bits to uniquely identify
their device interfaces.
A number of MAC addresses are reserved for specific applications:
MAC-Address
01-00-5E-00-00-00
01-80-C2-00-00-00 -802-
FF-FF-FF-FF-FF-FF 0806
FF-FF-FF-FF-FF-FF 8035
Table 12: Examples of reserved MAC addresses
Routing L3P
Release 4.0 11/07
Type Use
0800 Internet Multicast [RFC1112]
Spanning tree (for bridges)
ARP (for IP and CHAOS) as needed
Reverse ARP
9.1 Multicast Addresses
99