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Cisco 3750x Stack - LACP waiting to be aggregated takes too long


I have configured a portchannel with 3 ports - lacp active mode

I want to pxe boot esx server with Hp Proliant DL 360 G7.

During Pxe Boot the physical Interfaces must be in (I) state - standalone.

The server receives via dhcp the ip but after getting the ip the link goes down for a short time and the switchport goes down and then in (w) state - waiting to be aggregated.

Now the server tries to load via tftp the image but the server gets a timeout because the switchport is in state (w).

It takes a long time til the switchport comes back in standalone mode (I).

Is it possible to modify the time how long the switchport is in the waiting to be aggregated state on 3750x ?

Would the right command be lacp rate-fast?

But this command is not available on 3750x, only 6000 series.

Thx for any help.

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