Fibre Channel (SAN)

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Contributor
Posts: 32
Registered: ‎06-09-2012

Credit recovery with Virtual Channels enabled over ISL

I have credit recovery enabled on ISLs having Virtual Channels enabled.

But, I do see tim_txcrd_z errors being increased on ISLs.

Does credit recovery is supported in Virtual Channels???

Thanks for the help.

External Moderator
Posts: 4,857
Registered: ‎02-23-2004

Re: Credit recovery with Virtual Channels enabled over ISL

In some circumstance, Credit Recovery not become active.

You can try to set QoS "portcfgqos" on OFF

BTW, in some case is suggested to set the Port "portcfgfillword" as idle instead ARB primitive

TechHelp24
Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: Credit recovery with Virtual Channels enabled over ISL

Hi Rakesh,

Credit recovery is a feature used when a Credit is lost, the link is reset and thus all the credits are used again. Seeing an increase of tim_txcrd_z does not necesarily mean that a credit is lost, just that the flow control process is working.

Kind regards,

Felipon

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