If a device uses switch ports to gain access to multiple DSL (WAN) interfaces, a corresponding number of MAC addresses is required to differentiate the DSL ports. As there are cases where the required MAC address depends upon the remote site which, for example, uses the MAC address to determine the DSL access charge, the MAC addresses are defined for the logical DSL remote sites and not for the physical DSL ports.
The following options are available for setting the MAC address:
- Global: Global system MAC address
- The unique, locally managed MAC address is calculated from the global address
- User defined: A MAC address that can be freely defined by the user
Note: Every DSL connection contains its own MAC address. If two remote sites are configured with the same MAC address, this address is used for the first connection to be established. For the second connection, a "locally managed MAC address" is calculated from the user-defined MAC address, which is thus unambiguous. Similarly, for channel bundling the configured MAC address is used for the first connection; for the other bundle connections, a "locally managed" MAC address is calculated from the user-defined MAC address. If one of your connections is charged via the MAC address, configure this MAC address for the separately charged connection only. For all other connections you should use another address.
