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Fibre Channel (SAN)

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Contributor
Posts: 65
Registered: ‎08-22-2008
Accepted Solution

portcfgfillword

Hi

   I have just upgraded some san swich's ( 5100 ) to V7.4.2c. I was looking at an older unit we have and the portcfgfillword is 3

where as the 5100 is set to 0

 

I Remember that there was some recommendation that the fillword be set to 3, is this teh same for V7.4.2c, we have a mixture or storwise V7000 G1 and G2 and also some HP MSA kit

 

Should the portcfgfillword be sat to 3 ?

 

is there an explanation what the fillword does  ?

 

avago

Regular Contributor
Posts: 179
Registered: ‎04-04-2018

Re: portcfgfillword

[ Edited ]

Hello,

 

On whole 8Gb platform, you have to set correct fill word manually. 

Its not defined by FOS level.

 

In general fill word is the 4bytes words which port send all the time it doesnt have anything else to send.

So, It s used for link sync.

 

Please refer to articles to get more in details.

 

https://community.brocade.com/t5/Fibre-Channel-SAN-Forums/Should-fillword-be-set-to-3-on-all-8Gbps-ports/td-p/4575

 

https://www.ibm.com/developerworks/community/blogs/sanblog/entry/san_myths_uncovered_changing_fillwords_the_bloodletting_of_brocade_san?lang=en

 

https://support.purestorage.com/Solutions/SAN/Troubleshooting/Confirming_the_Correct_Fill-Word_Settings_for_a_SAN

 

Be aware that change of fillword will accomplish link reset 

 

 

 

Please mark this response as "Accept as Solution" if it answers your question.

Marian Bezeg

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