Vlan errors

[rogerscuall]

I have a VST network configuration in my ESX 3.5 hosts.

In the "Observed IP ranges" of the physical NIC of the server or “VMnic”

some VLAN has a wrong range, even IP address that doesn’t exist on my network. This

cause that some VM with a right network configuration on those VLAN cannot use

the network.

My questions are:

1.

The vswitch learn the vlan from the network configuration

of the VMs, or from the external network??

2.

There is a command to erase this IP range??

3.

There is a way to fix this IP range for the VLAN.

Thanks in advance.

Best regard.

Message was edited by: Texiwill: removed format commands

[Texiwill]

Hello,

Moved to ESX 3.5 forum

1.

The vswitch learn the vlan from the network configuration

of the VMs, or from the external network??

Yes.

2.

There is a command to erase this IP range??

Not that I know.

3.

There is a way to fix this IP range for the VLAN.

Perhaps shutdown the vmnic and restart it... esxcfg-nics

In general this IP range should NOT effect what happens on the VLAN. So if a VM can not access something on that VLAN most likely you have a different issue.

CHeck the output of:

esxcfg-nics -l

esxcfg-vswitch -l

Do those look proper?

Then all other normal network trouble shooting. Can you ping another VM on the same portgroup, on the same VLAN, then your router/bridge/gateway.

Best regards,
Edward L. Haletky
VMware Communities User Moderator
====
Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education.
Blue Gears and SearchVMware Pro Blogs -- Top Virtualization Security Links -- Virtualization Security Round Table Podcast

[rogerscuall]

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Only one of the VMNIC of the ESX server work fine. For

example the VLAN on the server farm runs in the ESX, some VM are in one VLAN

and some others in other VLANs. I can’t do load balancing with my VMNIC, when I

put in a Port Group the two VMNIC to work at the same time with load balancing

“Routed base IP hash” I lost the network with some VM in this port group. But

the real problem is not the load balancing itself the real problem is that I

don’t have redundancy either. I put the output of the command you asking for;

I think that the output it’s ok

esxcfg-nics -l

Name PCI Driver Link Speed Duplex MTU Description

vmnic1 02:04.00 bnx2 Up 1000Mbps Full 1500 Broadcom Corporation Broadcom NetXtreme II BCM5706 1000Base-SX

vmnic0 02:03.00 bnx2 Up 1000Mbps Full 1500 Broadcom Corporation Broadcom NetXtreme II BCM5706 1000Base-SX

esxcfg-vswitch -l

Switch Name Num Ports Used Ports Configured Ports MTU Uplinks

vSwitch 64 8 64 1500 vmnic0,vmnic1

PortGroup Name VLAN ID Used Ports Uplinks

VLAN_1 310 0 vmnic1,vmnic0

VLAN_2 301 0 vmnic1,vmnic0

VLAN_3 292 2 vmnic1,vmnic0

Administration1 270 1 vmnic1,vmnic0

VMotion 0 1 vmnic1,vmnic0

Best Regard

[_David]

The IP adresses shown on the network adapters in VI client is just whats last seen on the nics.

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