VLAN Configuration Questions

Posted on 2011-05-06
Last Modified: 2012-05-11
The scenario is two Cisco firewalls in HA config.  1 Blade center with multiple blades, 1 DL360 all running vmware.

I’m trying to understand how the VLANS will work with the f/walls, blade switches and VMware
Question by:Rhiaanon44
    LVL 116

    Accepted Solution

    IEEE 802.1Q (it's proper name!) or VLAN Tagging, is a network standard defined by IEEE 802.1 workgroup, for the sharing of PHYSICAL network links using multiple logical networks.

    what does this mean, we basically TAG the packets with a VLAN number, and the traffic leaves the VMware Server on a trunked network port, and enter the physical switch, when the physical switch "reads" the tagged traffic, it's able to direct it to the correct location.

    So for trafifc to propagate your network, you must allow for Tagged traffic on physical switches, Cisco Firewalls, and configured on your blades and ESX servers.

    On VMware Servers, Virtual Machine Portgroups are created using the VLAN number e.g. 101, 102 etc, these are connected to the virtual switch (vSwitch) inside the ESX server, the virtual switch is connected to physical network cards, which are trunked, and carry multiple VLANs into the physical switch, at the physical switch (which is configured for VLANs), the switch then can send the correct traffic to the correct LAN (VLAN).

    Author Comment

    Hi Hanccooka. Thank you for the information. Do you have any links or documentation that would guide me in configuring all this?
    LVL 116

    Assisted Solution

    by:Andrew Hancock (VMware vExpert / EE MVE)

    Author Closing Comment

    Thank you for your expertise!

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