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Using autoMax4G and ISL ports
Hello guys,
i have a 9513 with 8G capable 24 port card. I will be connecting a 9124e switch that is a 4G capable switch. The 9513 will have NPIV enabled and 9124e will be converted to NPV mode. Typically when i connect two identical speed switches together (TE mode) i set ports on each side to "dedicated" RateMode. In this case i don't want to dedicate 8G on 9513 for connection that is going to a 4G switch. So i was thinking of using autoMax4G on 9513 side, does anybody see any problems with doing that ? Since 9124e it's going to bein NPV mode, it will login as F port and not TE port. Or should i simply set 4G and be done with it.
Thank you
Ali_Kaunain
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October 27th, 2010 01:00
Hi there Dynamox
Like you mentioned, apart from setting dedicated 8G on the 9513, all the others are good options. You could set automax4G on 9513. Alternatively you could also set it to 4G. No issues there.
Please let me know if you need more information.
Regards,
Ali
dynamox
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October 27th, 2010 20:00
Thanks Ali. So what's a good scenario for using autoMax4G other than the obvious of preventing something of going over 4G. I mean if somebody was connecting an 8G interface why would they lock it down to 4G only. Let's say i have a 8G FA on VMAX, if i set this port to speed "auto" and RateMode "shared" ..then it will be using whatever it's using, i am not reserving specific ratemode and if it happens to spike up to 8G ..it can.
RRR
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October 28th, 2010 03:00
I always try to set switch ports to fixed settings when used for ISL. For storage ports I'd advise to set these ports to fixed, to make sure you never end up with performance problems on those.
I'd advise to start using Brocade
. No oversubscription there 
.