Figure 3-7 shows an overview of how the option works. In production environments, you  normally have at least two physical interfaces on the VIOS, and you can also use a dual-VIOS  setup. In a multiple-physical-interface environment, the virtual link is reported as down only  when all physical connections on the VIOS for this SEA are down. Figure 3-7 Using poll_uplink The following settings are possible for  poll_uplink : To display the settings, use the  lsattr –El entX  command. Example 3-9 shows the default  settings for  poll_uplink . GLYPH<SM590000> poll_uplink  ( yes ,  no ) GLYPH<SM590000> poll_uplink_int  (100 milliseconds (ms) - 5000 ms) Example 3-9 The lsattr details for poll_uplink  # lsdev –Cc Adapter | grep ^ent ent0 Available Virtual I/O Ethernet Adapter (l-lan) ent1 Available Virtual I/O Ethernet Adapter (l-lan) # lsattr –El ent0 | grep “poll_up” poll_uplink no Enable Uplink Polling True poll_uplink_int 1000 Time interval for Uplink Polling True 64  IBM PowerHA SystemMirror V7.2.3 for IBM AIX and V7.2.2 for Linux