RayV
Contributor
Contributor

SC slow to rebuild network connection

We just found out that when the SC cable on any ESX 3.0.1-server is disconnected from the switch and immediately is connected again, the SC does not respond to a ping for almost 40 seconds.

This means that HA kicks in when the network goes down for even a fraction of a second.

(To rule out the switch we connected a standard XP-laptop to the switch, pulled the cable and put the cable back immediately. Only 1 ping reply was lost.)

Question: is this normal behavior of the SC? Is there any thing we can configure to make the SC build up a network connection quicker and stop HA from starting?

Thanks in advance!

Regards,

Raymond

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3 Replies
dkfbp
Expert
Expert

Try to hardcode the switch port and nic to 100mbit full/duplex and see if that helps.

Best regards Frank Brix Pedersen blog: http://www.vfrank.org
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Erik_Zandboer
Expert
Expert

Maybe the switch has spanning tree enabled? In this case a connect may take that long, unless you specify "spanning-tree mode portfast" (cisco).

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RayV
Contributor
Contributor

We found the solution, the SC was connected to a trunk port with "spanning-tree portfast" enabled, but it should have been configured with the "spanning-tree portfast trunk" setting.

Thanks for your replies.

Regards,

Raymond

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