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Dell PSM 4110 Flow Control Issue
Hello,
We have a PSM 4110 Blade iSCSI (10 Gbit) storage, which is connected to 3x M620 blade servers via 2x PowerConnect M8024 switches and the flow control cannot be activated on the switch ports, which are used by the storage.
Is there anybody, who has the same storage and switch configuration and have such experience?
•Storage array firmware version: V6.0.4 (R322829)
•Switch firmware version: 5.1.0.1
DELL-Joe S
7 Technologist
7 Technologist
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June 24th, 2013 06:00
Flow control is a global command
#config
#flowcontrol
answer y
-joe
G.Andras
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June 24th, 2013 06:00
Hi Joe,
Flow control is enabled on all the switch ports, it is active at Te1/0/1-3 (used by blade servers) but inactive at Te2/0/15-16 ports (used by the storage).
Port Description Duplex Speed State Neg Status Link Flow Control
--------- ------------------------- ------ ------- ---- ------ ------------
Te1/0/1 Full 10000 Auto Up Active
Te1/0/2 Full 10000 Auto Up Active
Te1/0/3 Full 10000 Auto Up Active
Te2/0/15 Full 10000 Auto Up Inactive
Te2/0/16 Full 10000 Auto Up Inactive
The configuration was made according to Dell best practices.
Origin3k
4 Operator
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June 24th, 2013 09:00
@Joe,
The "PC8024(f)" doesnt support DCB completly so in the EQL GroupManager you have do disable this feature. I dont know how different the "m8024" is.
Regards,
Joerg
DELL-Joe S
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June 24th, 2013 09:00
Take a look at this link first: en.community.dell.com/.../4355.configuring-dcb-with-equallogic-sans.aspx
If you are using DCB, this could be a misconfiguration on the Priority Flow control.
-joe
DELL-Joe S
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June 24th, 2013 10:00
I was indicating that per the document link, the model M8024 should have DCB disabled, and not use PFC, but use Standard Flow control.
-joe
Anonymous
5 Practitioner
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274.2K Posts
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June 24th, 2013 11:00
You also need to disable this on the SWITCH, not the array.
8024's should have the current 5.x firmware installed and DCB disabled on all switches. This will insure that Link Layer Flowcontrol can be enabled.
G.Andras
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June 25th, 2013 00:00
Hi Joe, Don,
The DCB is disabled on all switches as well as on the storage.
We have a PS 4110 external iSCSI 10 Gbit storage for testing purpose, which is working fine with the M8024 switches, the flow control is active on the Te2/0/17 switch port, which is used to connect the storage to the switch.
Port Description Duplex Speed State Neg Status Link Flow Control
--------- ------------------------- ---------- ----------------- ----------- ------ ------------------
Te2/0/17 Full 10000 Off Up Active
I have just upgarded the firmware of the PSM 4110 blade storage to the latest version (V6.0.5 R339152) but the situation is the same, the storage is not negotiating flow control with the M8024 switches.
DELL-Joe S
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June 25th, 2013 05:00
I see that your original support case was esclated, and we are aware of the flow control issue with the M8024-K. Once a solution is determined, someone will contact you.
-joe
G.Andras
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July 8th, 2013 09:00
Hi Joe,
Do you have any news about the solution to the flow control issue?