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Knowledge Base

Cannot create a VMkernel port on an ESXi host (1034275)

Last Updated: 2/18/2016Categories: TroubleshootingTotal Views: 31527Language:
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Symptoms

Creating a vmkernel interface on ESXi host fails

The message.log may contain entries similar to:

Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Net: 2934: Setting Tx-complete cb for port
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Net: 2973: Setting cb for port
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip_Vmk: 757: mcast[0] = 33:33:ff:73:03:1f
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip_Vmk: 757: mcast[1] = 33:33:00:00:00:01
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip: 872: NIC supports Tso
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip: 879: NIC support TX checksum offloading
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip: 885: NIC supports Scatter-Gather transmits
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip_Vmk: 97: vmk2:
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip_Vmk: 97: Ethernet address: 00:50:56:73:03:1f
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip: 937: ether attach complete vmk 0 0
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)NetPort: 982: enabled port 0x2000003 with mac 00:50:56:73:03:1f
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)Tcpip: 756: ip_addr = 0x6c3cc90a, netmask = 0x0
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)WARNING: Tcpip: 768: Failed to set ip address. (error = 0x11)
Jan 31 23:53:47 vmkernel: 0:00:03:17.506 cpu3:8929)WARNING: Tcpip_Vmk: 555: vmk_set_ip_address failed with error = 0x11, status = 0xbad0005
Jan 31 23:53:47 vmkernel: 0:00:03:17.507 cpu3:8929)WARNING: Tcpip: 817: Failed to unset the ip address (error = 49)
Jan 31 23:53:47 vmkernel: 0:00:03:17.507 cpu3:8929)Migrate: 337: The vmknic interface vmk2 is being deleted
Jan 31 23:53:47 vmkernel: 0:00:03:17.507 cpu3:8929)NetPort: 1157: disabled port 0x2000003
Jan 31 23:53:47 vmkernel: 0:00:03:17.507 cpu3:8929)Net: 1847: disconnected client from port 0x2000003

Resolution

This issue occurs when a VMkernel network interface has an incorrect subnet mask configured. Each VMkernel network interface must have a unique, non-overlapping network block configured.

To resolve this issue:

Check the VMkernel routing table with the command:

~# esxcfg-route -l

The output appears similar to:

VMkernel Routes:
Network Netmask Gateway Interface
xx.xx.xx.xx 255.255.254.0 Local Subnet vmk0
192.168.0.0 255.255.0.0 10.201.0.254 vmk0
xx.xx.xx.xx 255.0.0.0 xx.xx.xx.xx vmk0
default 0.0.0.0 xx.xx.xx.xx vmk0

Identify any routes with overlapping subnets. For example, xx.xx.xx.xx/8 is a superset of xx.xx.xx.xx/24.

Remove or modify the existing VMkernel network interfaces to prevent overlap using the command:

esxcfg-route -d <network> <netmask> <default gateway>

Create the new VMkernel network interface and route. For more information, see Configuring the ESXi Management Network from the direct console (1006710).

Related Information

Configuring VMware ESXi Management Network from the direct console

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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Download and Install VMware Fusion (2014097)

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