7: Operations, Administration & MaintenanceType• Iometrix L1: Iometrix cNode level 1. Loopback all packets that have a destination address equal to00:30:79:FF:FF:FF• Exfo L2: Loopback all packets that have a source MAC OUI equal to 00:03:01• Exfo L3: Loopback all UDP echo service packets.• Custom: Loopback all traffic that matches the user defined filter.PersistentEnable or disable loopback at startup time. This option can only be set for Manual loopbacks with no timeout.Filter typeSelect the filter type that will be applied to the loopback traffic. For more information on filters, see Traffic filters on page110.L2 filterIf Filter type is set to L2 filter, select the L2 filter that will be applied to loopback traffic.IPV4 filterIf Filter type is set to IPv4 filter, select the IPv4 filter that will be applied to loopback traffic.Actions• Swap MAC addresses: Swaps the source and destination MAC addresses.• Swap IP addresses: Swaps the source and destination IP addresses.• Swap TCP/UDP ports: Swaps the source and destination TCP/UDP ports.Drop opposite trafficDrops traffic originating from Client port when looping back to the Network port and vice versa.NOTE: Enabling this option will interrupt the Ethernet service in one direction.Loopback timeoutSpecify the number of minutes that the loopback will remain enabled. When the timeout expires the loopback isautomatically removed.Remote loopback enableThese options allow loopbacks to be activated remotely using the following devices/protocols:z JDSU/Acterna™z Enable discovery loop commands: Accept or discard JDSU/Acterna discovery loopback commands.z Sunrise™: The EtherNID supports tests on layers 2 and 3.z OAM 802.3AHNOTE: This option is not affected by the setting of Loopback enable.
