Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 423)

Brocade Mobility RFS Controller System Reference Guide 411
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4. Refer to the following to review VM interface configurations and status:
5. To edit the configuration of an existing VM interface, select it from amongst those displayed
and select the Edit button. The VM Interfaces Basic Configuration screen displays by default.
Name Displays the VM interface numerical identifier assigned when it was created. The numerical name
cannot be modified as part of the edit process.
Type Displays whether the type is VM interface.
Description Lists a short description (64 characters maximum) describing the VM interface or differentiating it from
others with similar configurations.
Admin Status A green check mark defines the listed VM interface as active and currently enabled with the profile. A
red “X” defines the VM interface as currently disabled and not available for use. The interface status
can be modified with the VM interface Basic Configuration screen as required.
Mode Displays the layer 3 mode of the VM interface as either Access or Trunk (as defined within the VM
Interfaces Basic Configuration screen). If Access is selected, the listed VM interface accepts packets
only from the native VLAN. Frames are forwarded untagged with no 802.1Q header. All frames received
on the port are expected as untagged and mapped to the native VLAN. If set to Trunk, the port allows
packets from a list of VLANs added to the trunk. A VM interface configured as Trunk supports multiple
802.1Q tagged VLANs and one Native VLAN which can be tagged or untagged.
Native VLAN Lists the numerical VLAN ID (1 - 4094) set for the native VLAN. The native VLAN allows a VM interface to
associate untagged frames to a VLAN when no 802.1Q frame is included in the frame. Additionally, the
native VLAN is the VLAN untagged traffic is directed over when using a VM interface in trunk mode.
Tag Native VLAN A green check mark defines the native VLAN as tagged. A red “X” defines the native VLAN as untagged.
When a frame is tagged, the 12 bit frame VLAN ID is added to the 802.1Q header so upstream VM
interface ports know which VLAN ID the frame belongs to. The device reads the 12 bit VLAN ID and
forwards the frame to the appropriate VLAN. When a frame is received with no 802.1Q header, the
upstream VM interface classifies the frame using the default or native VLAN assigned to the Trunk port.
A native VLAN allows a VM interface to associate untagged frames to a VLAN when no 802.1Q frame is
included in the frame.
Allowed VLANs Displays those VLANs allowed to send packets over the listed VM interface. Allowed VLANs are only
listed when the mode has been set to Trunk.