VMware Solutions Discussions

VIFs, VLANS and FlowControl

paulreed
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Hi,

I was trying to configure a FAS2040 as per the best practices outlined in http://media.netapp.com/documents/tr-3749.pdf. It mentions the use of a VIF with all 4 available NICs using LACP, VLAN tagging, enabling jumo frames and setting flow control to Send.

All seemed fine until I set flowcontrol to Send, after which I completely lost communications with the filer. The switch was configured correctly and listed the interfaces as up but I couldn't connect to or ping any of the IPs.

Here's the jist of the config (names and IPs are different, just keeping it simple)

vif create lacp vif0a -b ip e0a e0b e0c e0d

vlan create vif0a 101 102 103

ifconfig vif0a-101 10.0.1.1 netmask 255.255.255.0

ifconfig vif0a-102 10.0.2.1 netmask 255.255.255.0

ifconfig vif0a-103 10.0.3.1 netmask 255.255.255.0

ifconfig vif0a-102 mtusize 9000

ifconfig e0a flowcontrol send

ifconfig e0b flowcontrol send

ifconfig e0c flowcontrol send

ifconfig e0d flowcontrol send

reboot

After the restart, the filer was completely unreachable. When I removed the flowcontrol send from each interface connectivity was restored.

Am I trying to do something that is not supported or are the problems likely to be elsewhere?

Thanks

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