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EHM : 1 port uplink failure

Answered Question
Sep 26th, 2013
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Hi,


For now, to start a new UCS domain, my customer would want to configurate an Ethernet Uplink with only 1 port/FO. So, we are going to configurate a Po with 1 port.


In case of failure of this link, do all vNIC using this uplink fail ?

I mean, the vmnic from the WMare vswitch are going down if this Ethernet uplink failed ???


Thanks.


Nicolas.

Correct Answer by sprasath about 3 years 10 months ago

Hi Nicolas,


If you have failover enabled on the UCS vNIC level, the vNICs would move to the other fabric interconnect. For example, if the vNIC is initially pointing to FI A and if the port-channel on FI A goes down, UCS vNIC failover capability would kick in and move the connection to FI B. The vmnic on ESX won't be aware of this.


If you do not have failover enabled, then the NIC would go down on the UCS (and on ESX)


Thanks,

Shankar

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Correct Answer
sprasath Fri, 09/27/2013 - 01:25
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  • Cisco Employee,

Hi Nicolas,


If you have failover enabled on the UCS vNIC level, the vNICs would move to the other fabric interconnect. For example, if the vNIC is initially pointing to FI A and if the port-channel on FI A goes down, UCS vNIC failover capability would kick in and move the connection to FI B. The vmnic on ESX won't be aware of this.


If you do not have failover enabled, then the NIC would go down on the UCS (and on ESX)


Thanks,

Shankar

delahais Fri, 09/27/2013 - 02:39
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Thank for your reply.


No need to enable CDP : we agree ?


best regards.

sprasath Fri, 09/27/2013 - 02:43
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  • Cisco Employee,

No, CDP is not relevant here.


Thanks,

Shankar

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