VMware vSphere

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  • 1.  Connection issue with vlan ID

    Posted Jul 23, 2018 06:02 AM

    Hi all,

    We face a issue that Network connection in one subnet will be lose.

    Env

    Group A includes Cisco 3750 -1  and Cisco 3750 -2

    Group B includes Cisco 3750 -3  and Cisco 3750 -4

    I have five servers, the NICs confiugre as below,

    All Broadcom NICs with five servers connect to  Cisco 3750 -1

    The other INTEL NICs connect to  Cisco 3750 -3

    I configure the vID with vSwitches.

    10.10.10.0 /24 vlan id  -> 10

    10.10.20.0 /24 vlan id  -> 20

    10.10.30.0 /24 vlan id  -> 30

    10.10.40.0 /24 vlan id  -> 40

    All firmware and drive with NICs are upgraded to the newst version.

    Issue

    As the Broadcom NICs are active, INTEL NiCs are standby,

    The guest OS with 10.10.10.0 /24, the connection will be lose.

    As I reconfigure the network, the connection will be back.

    However, when I vMotion all servers in this subnet, all connections still disconnect.

    As the Broadcom NICs are standby INTEL NiCs are active,

    No issues.

    I think it is a Cisco switchs issue. I ask network team to check this issue.

    but, they reply me they don't find any issue for this.

    Does anyone have idea for this case?

    thank you.



  • 2.  RE: Connection issue with vlan ID

    Posted Jul 23, 2018 06:42 AM

    All are configured as " Auto negotiation" or fixed mbps ?



  • 3.  RE: Connection issue with vlan ID

    Posted Jul 23, 2018 07:31 AM

    Auto negotiation, thank you.



  • 4.  RE: Connection issue with vlan ID

    Posted Jul 23, 2018 06:47 AM

    Kindly advise about the connection between your Cisco Switches.

    And about the teaming policy configured on ESXi and Cisco switches.

    Please consider marking this answer "CORRECT" or "Helpful" if you think your question have been answered correctly.

    Cheers,

    VCIX6-NV|VCP-NV|VCP-DC|

    @KakHassan

    linkedin.com/in/hassanalkak