AXISHK
asked on
MAC Address for VMmware
I have a VMware 4.0 host and with two physical ports (00:25:b3:23:ae:xx). They are grouped into a virtual switch.
There are three VM guests and their MAC addresses (virtual) are
00:0c:29:48:9c:ec server1
00:0c:29:10:b5:cd server2
00:0c:29:52:28:ce server3
1. What's the pattern of assign the MAC address to each VM guest ? Does it always start with "00:0c:29" ?
2. I can access the Corp Switches. On each VM guest, I notify that the "00:00c:29" is used to communicate. On the physical switch, will the virtual MAC address "00:00c:29" or the physical "00:25:b3:23:ae:xx" be seen ?
Thanks
There are three VM guests and their MAC addresses (virtual) are
00:0c:29:48:9c:ec server1
00:0c:29:10:b5:cd server2
00:0c:29:52:28:ce server3
1. What's the pattern of assign the MAC address to each VM guest ? Does it always start with "00:0c:29" ?
2. I can access the Corp Switches. On each VM guest, I notify that the "00:00c:29" is used to communicate. On the physical switch, will the virtual MAC address "00:00c:29" or the physical "00:25:b3:23:ae:xx" be seen ?
Thanks
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
What's the pattern of MAC address for VM host assigning to VM guests ? Does it alway start with "00:0c:29" ?
Any comment for question 2 ?
Any comment for question 2 ?
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Thanks.
Refer to my question 2 : on the physical switch, will the virtual MAC address "00:00c:29" or the physical "00:25:b3:23:ae:xx" be seen ?
Tks again.
Refer to my question 2 : on the physical switch, will the virtual MAC address "00:00c:29" or the physical "00:25:b3:23:ae:xx" be seen ?
Tks again.
On the switch you will see the Virtual Mac address; That is the only way that a virtual server or workstation would be able to contact a DHCP server and get a separate ip address
On Vmware Workstation you can configure a network adapter as "NAT", it will get an ip address from the Workstation VMware dhcp pool, and communicate to the outside with the physical workstation IP and MAC-address.
On Vmware Workstation you can configure a network adapter as "NAT", it will get an ip address from the Workstation VMware dhcp pool, and communicate to the outside with the physical workstation IP and MAC-address.
these MAC addresses will be seen
00:00c:29
as for 00:25:b3:23:ae:xx, not sure what MAC Address this is!
00:00c:29
as for 00:25:b3:23:ae:xx, not sure what MAC Address this is!
00:25 is a Hewlett Packard address.
Does your siwtch care? I have not had to worry about MAC addresses of equipment at clients.
... Thinkpads_User
Does your siwtch care? I have not had to worry about MAC addresses of equipment at clients.
... Thinkpads_User
ASKER
00:25:b3:23:ae:xx (where xx may be ae, ac,..) are the physiccal MAC address of the VMware host.
My question is physical address is attached to the switch but each VM guests have its own virtual MAC, so what MAC address is logged in the switch.
I need to make of this information to identify which ports are connected to which VMware hosts.
My question is physical address is attached to the switch but each VM guests have its own virtual MAC, so what MAC address is logged in the switch.
I need to make of this information to identify which ports are connected to which VMware hosts.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
I can't access corporate switches which is managed by Network team.
However, each physical ports of the switch will learn which device is attached to the the port and record down a MAC address. To my knowledge, only a MAC address is recorded. Am I correct ?
Thank again.
However, each physical ports of the switch will learn which device is attached to the the port and record down a MAC address. To my knowledge, only a MAC address is recorded. Am I correct ?
Thank again.
That's correct, they will exist in the Switch ARP table.
... Thinkpads_User