ATM and IP Multipathing

The SunATM software supports IP Multipathing in the LAN Emulation environment. IP Multipathing allows you to create interface groups which provide stand-by interfaces which IP may failover to in the event of hardware failure between an interface and its network equipment. In addition, it allows increased network throughput by spreading traffic across the group member interfaces

Consider the following rules when you use IP Multipathing with the SunATM software:

• IP Multipathing is only supported on interfaces running LAN Emulation. It cannot be configured on Classical IP interfaces.

• LAN Emulation interfaces that are members of an IP Multipathing group must all be members of the same Emulated LAN. This fulfills the IP Multipathing requirement that the group members be connected to the same IP Link.

• ATM interfaces do not have /etc/hostname.laneN files, so this method of configuring IP Multipathing information is not supported on ATM LAN Emulation interfaces. You must instead use the ifconfig command, as described in the IP Network Multipathing Administration Guide.