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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. 

<img src='content_image/1001238.jpg'>

The following settings are possible for poll_uplink : 

GLYPH<SM590000> poll_uplink  ( yes , no ) 

GLYPH<SM590000> poll_uplink_int  (100 milliseconds (ms) - 5000 ms) 

To display the settings, use the lsattr –El entX  command. Example 3-9 shows the default settings 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 

