exadata PDU down

[rafiki]

Hi Erman,

We have two exadata.
As I can see on OEM at exadata tab,our PDU is down.How can I bring back to UP?

exa01sw-pdua01.rafiki.com is down
exa01sw-pdub01.rafiki.com is also down
----------------------------------

Also we have one more exadata and PDU looks UP on this exadata

[ErmanArslansOracleBlog]

Are the network cables connected to these PDU units?