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Beginner

Don't receive ARP reply in vlan.

Hello. I have Cisco L3 switch wich connected to ESXI via trunk and I have two vlans for servers. VM In Vlan 10 trying to connect to others VM in Vlan 10 but I can't receive ARP reply from others VM and gateway in Vlan 10. But if I switch this VM to Vlan 20 everything works fine. Can you help me to solve this issue?

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VIP Advisor

Re: Don't receive ARP reply in vlan.

If other Windows VM able to send ARP entries to switch, and only New VM not sending ARP requests, i will investigate on VM Side also look at Esxi shell level?

 

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8 REPLIES 8
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VIP Advisor

Re: Don't receive ARP reply in vlan.

how is your port configuration on the switch ? is the VLAN 20 or VLAN 10 is native VLAN ?

 

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Beginner

Re: Don't receive ARP reply in vlan.

Port setup as trunk. Vlan 1 is native. Other VM in vlan 10 has IP address and I can ping these VM but only new VM has problem with ARP.
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VIP Advisor

Re: Don't receive ARP reply in vlan.

Can you provide the switch side config the port connected to Esxi and what is the New VM ? Windows or Linux ?

 

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Beginner

Re: Don't receive ARP reply in vlan.

switch config for ports that connected to esxi
interface GigabitEthernet1/33
switchport
switchport mode trunk
switchport trunk allowed vlan 10,20
speed 1000
duplex full

interface GigabitEthernet2/33
switchport
switchport mode trunk
switchport trunk allowed vlan 10,20
speed 1000
duplex full

New VM - Windows. I have a couple of VMs in VLAN 10 which work fine. I created new windows vm and connected to vlan 10.
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Beginner

Re: Don't receive ARP reply in vlan.

windows vm has static ip address. All the vms has static ip addresses.

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VIP Advisor

Re: Don't receive ARP reply in vlan.

If other Windows VM able to send ARP entries to switch, and only New VM not sending ARP requests, i will investigate on VM Side also look at Esxi shell level?

 

BB
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Beginner

Re: Don't receive ARP reply in vlan.

I've chaneged Windows 7 to Windows 10 and problem has solved. Thank you!
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VIP Advocate

Re: Don't receive ARP reply in vlan.

Hi,

What are the switch port configuration and EXSi host's network configuration? 

Regards,
Deepak Kumar,
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