Enabling ARP Redirect for Hardware iSCSI HBAs

Products

• VMware vSphere ESXi

Issue/Introduction

This article provides information to enable ARP Redirect on iSCSI HBAs, so that the HBAs can operate with Compellent iSCSI arrays.

Environment

VMware ESX Server 3.5.x
VMware ESXi 3.5.x Embedded
VMware ESXi 4.1.x Installable
VMware vSphere ESXi 5.0
VMware vSphere ESXi 5.5
VMware ESXi 4.1.x Embedded
VMware ESX 4.0.x
VMware ESXi 4.0.x Installable
VMware vSphere ESXi 5.1
VMware ESXi 3.5.x Installable
VMware ESXi 4.0.x Embedded
VMware ESX Server 3.0.x

Resolution

To enable ARP Redirect on iSCSI HBAs:

For ESX/ESXi 3.x and 4.x:

1. Connect to the ESXi/ESX host using SSH.
2. Run this command to check the iSCSI HBA status:
   
   esxcfg-hwiscsi -l vmhba#
    
3. Run this command to enable ARP Redirect:
   
   esxcfg-hwiscsi -a allow vmhba#
    
4. Reboot the ESXi/ESX host for the change to take effect.

For ESXi 5.x:

1. Connect to the ESXi/ESX host using SSH.
2. Run this command to check the iSCSI HBA status:
   
   esxcli iscsi physicalnetworkportal param get -A vmhba#
    
3. Run this command to enable ARP Redirect:
   
   esxcli iscsi physicalnetworkportal param get -A vmhba# -o ArpRedirect -v 1
   
   Note: Ensure to migrate all virtual machines from the ESX/ESXi host prior to making these changes.
4. Reboot the ESXi/ESX host for the change to take effect.

Additional Information

To determine the iSCSI HBA:

1. Connect to the ESXi/ESX host or vCenter Server using the vSphere Client.
2. Click on Host > Configuration > Storage Adapters > iSCSI Software Adapter.