Network Connectivity Issue (Ping commands not working as expected)

[warlock129]

I have begun building anetwork on VMWare Workstation but have

come across a slight issue. In the Virtual Network Editor i have

configured a new connection on VMnet2, it is utilising the NAT connection method, whilst at the same time a host virtual adapter and

local DHCP service to distribute IP's.

Now the IP's have

successfully been distributed with all VM's on the designed network

(192.168.60.0) yet i am unable to ping from one VM to another. I am also unable to ping from my external host to VM which is strange as they work the other way around.

I have included my ip configuration below:

On my external host the ipconfig output is as follows:

Ethernet adapter local area connection 2:

Connection-specific DNS suffix: bolton.ac.uk

IP Address - 172.16.3.146

Subnet Mask - 255.240.0.0

Default Gateway - 172.16.0.254

Connection-specific DNS suffix: (Not specified)

IP Address - 192.168.60.1

Subnet Mask - 255.255.255.0

Default Gateway - 172.168.60.1

My VM's are below:

Machine 1: IP Address - 192.168.60.128

Subnet Mask - 255.255.255.0

Default Gateway - 192.168.60.2

Machine 2: IP Address - 192.168.60.129

Subnet Mask - 255.255.255.0

Default Gateway - 192.168.60.1

Machine 3: IP Address - 192.168.60.130

Subnet Mask - 255.255.255.0

Default Gateway - 192.168.60.1

Machine 4: IP Address - 192.168.60.131

Subnet Mask - 255.255.255.0

Default Gateway - 192.168.60.1

If anyone could assist me in correcting this i'd be grateful. thanks

[AWo]

Welcome to the forums!

Why do you create a NAT network if one exists already? VMnet8.

However,...

the default gateway on all guests participating in a NAT network must be the VMnet8 IP address of the host +1. In your case that is 2.

You can't ping a guest which uses NAT from the outside because you use...NAT. The IP address of the guest is not reachable so you have to ping the IP address from the host. But how should the host know if this ping is for him or the guest. Therefore you need to configure NAT port forwarding under VMware to route specific ports, coming from the outside, to the guest. Only UPD and TCP ports can be rerouted, not ICMP.

Please post the complete IP setup using "ipconfig /all" (Windows) or "ifconfig -a" (Linux). If you have the latter, add the default gateway and DNS server IP addresses you use.

AWo

VCP 3 & 4

Author @ vmwire.net

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[warlock129]

Ok i am currently using the default VMnet8 NAT adapter, from all VM's i am able to ping the host but unable to ping from VM to VM i want all VM's to be able to ping each other as i am trying to create a virtual network.

The ipconfig/all outputs from all machines are listed below:

HOST MACHINE:

Windows IP Configuration

Host Name . . . . . . . . . . . . : computer_1

Primary Dns Suffix . . . . . . . :

Node Type . . . . . . . . . . . . : Unknown

IP Routing Enabled. . . . . . . . : No

WINS Proxy Enabled. . . . . . . . : No

DNS Suffix Search List. . . . . . : bolton.ac.uk

Ethernet adapter Local Area Connection 2:

Connection-specific DNS Suffix . : bolton.ac.uk

Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connecti

on

Physical Address. . . . . . . . . : 00-13-A9-0E-D4-FB

Dhcp Enabled. . . . . . . . . . . : Yes

Autoconfiguration Enabled . . . . : Yes

IP Address. . . . . . . . . . . . : 172.16.3.146

Subnet Mask . . . . . . . . . . . : 255.240.0.0

Default Gateway . . . . . . . . . : 172.16.0.254

DHCP Server . . . . . . . . . . . : 172.16.1.253

DNS Servers . . . . . . . . . . . : 10.33.20.12

10.33.20.22

Lease Obtained. . . . . . . . . . : 18 February 2010 12:55:17

Lease Expires . . . . . . . . . . : 19 February 2010 00:55:17

Ethernet adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected

Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Network Connection

Physical Address. . . . . . . . . : 00-13-02-0D-1E-01

Ethernet adapter VMware Network Adapter VMnet8:

Connection-specific DNS Suffix . :

Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for

VMnet8

Physical Address. . . . . . . . . : 00-50-56-C0-00-08

Dhcp Enabled. . . . . . . . . . . : No

IP Address. . . . . . . . . . . . : 192.168.216.1

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . :

Ethernet adapter VMware Network Adapter VMnet1:

Connection-specific DNS Suffix . :

Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet1

Physical Address. . . . . . . . . : 00-50-56-C0-00-01

Dhcp Enabled. . . . . . . . . . . : No

IP Address. . . . . . . . . . . . : 192.168.21.1

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . :

VM MACHINE1:

Windows IP Configuration

Host Name . . . . . . . . . . . . : luke-f11e56292f

Primary Dns Suffix . . . . . . . :

Node Type . . . . . . . . . . . . : Hybrid

IP Routing Enabled. . . . . . . . : No

WINS Proxy Enabled. . . . . . . . : No

DNS Suffix Search List. . . . . . : localdomain

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : localdomain

Description . . . . . . . . . . . : VMware Accelerated AMD PCNet Adapter

Physical Address. . . . . . . . . : 00-0C-29-8F-E7-9E

Dhcp Enabled. . . . . . . . . . . : Yes

Autoconfiguration Enabled . . . . : Yes

IP Address. . . . . . . . . . . . : 192.168.216.129 Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 192.168.216.2

DHCP Server . . . . . . . . . . . : 192.168.216.254

DNS Servers . . . . . . . . . . . : 192.168.216.2

Primary WINS Server . . . . . . . : 192.168.216.2

Lease Obtained. . . . . . . . . . : Thursday, February 18, 2010 1:04:20 PM

Lease Expires . . . . . . . . . . : Thursday, February 18, 2010 1:34:20 PM

VM Machine 2:

Windows IP Configuration

Host Name . . . . . . . . . . . . : luke-f11e56292f

Primary Dns Suffix . . . . . . . :

Node Type . . . . . . . . . . . . : Hybrid

IP Routing Enabled. . . . . . . . : No

WINS Proxy Enabled. . . . . . . . : No

DNS Suffix Search List. . . . . . : localdomain

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : localdomain

Description . . . . . . . . . . . : VMware Accelerated AMD PCNet Adapter

Physical Address. . . . . . . . . : 00-0C-29-8F-E7-9E

Dhcp Enabled. . . . . . . . . . . : Yes

Autoconfiguration Enabled . . . . : Yes

IP Address. . . . . . . . . . . . : 192.168.216.128 Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 192.168.216.2

DHCP Server . . . . . . . . . . . : 192.168.216.254

DNS Servers . . . . . . . . . . . : 192.168.216.2

Primary WINS Server . . . . . . . : 192.168.216.2

Lease Obtained. . . . . . . . . . : Thursday, February 18, 2010 1:04:20 PM

Lease Expires . . . . . . . . . . : Thursday, February 18, 2010 1:34:20 PM

VM Machine 3:Windows IP Configuration

Host Name . . . . . . . . . . . . : luke-0c6df6ee5d

Primary Dns Suffix . . . . . . . :

Node Type . . . . . . . . . . . . : Hybrid

IP Routing Enabled. . . . . . . . : No

WINS Proxy Enabled. . . . . . . . : No

DNS Suffix Search List. . . . . . : localdomain

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : localdomain

Description . . . . . . . . . . . : VMware Accelerated AMD PCNet Adapter

Physical Address. . . . . . . . . : 00-0C-29-D9-75-BC

Dhcp Enabled. . . . . . . . . . . : Yes

Autoconfiguration Enabled . . . . : Yes

IP Address. . . . . . . . . . . . : 192.168.216.130

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 192.168.216.2

DHCP Server . . . . . . . . . . . : 192.168.216.254

DNS Servers . . . . . . . . . . . : 192.168.216.2

Primary WINS Server . . . . . . . : 192.168.216.2

Lease Obtained. . . . . . . . . . : Thursday, February 18, 2010 1:10:24 PM

Lease Expires . . . . . . . . . . : Thursday, February 18, 2010 1:40:24 PM

[AWo]

Your IP setup looks fine.

Do you ping by name or IP address? If you use the name, do you use the FQDN or only the host name?

Disable all firewalls on the guest (be aware that some virus protection software also have firewalls, like Trend Micro).

AWo

VCP 3 & 4

Author @ vmwire.net

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