You can add a new VM interface configuration or edit an existing configuration.
| Description | Enter a description for the controller or service platform VM interface (64 characters maximum). |
| Admin Status | Select Enabled to define this VM interface as active to the profile it supports. Select Disabled to disable this VM interface in the profile. It can be activated at any time when needed. This option is disabled by default. |
| Mode | Select either Access or Trunk to set the VLAN switching mode over the VM interface. If Access is selected, the VM interface accepts packets only from the native VLAN. Frames are forwarded untagged with no 802.1Q header. All frames received on the VMF port are expected as untagged and mapped to the native VLAN. If set to Trunk, the port allows packets from a list of VLANs you add 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. Access is the default setting. |
| Native VLAN | Define the numerical VLAN ID (1 - 4094) for the native VLAN. The native The native VLAN allows an Ethernet device 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 will be directed over when using trunk mode. The default value is 1. |
| Tag Native VLAN | Select this option to tag the native VLAN. Service platforms support the IEEE 802.1Q specification for tagging frames and coordinating VLANs between devices. IEEE 802.1Q adds four bytes to each frame identifying the VLAN ID for upstream VMIF that the frame belongs. If the upstream VMIF does not support IEEE 802.1Q tagging, it does not interpret the tagged frames. When VLAN tagging is required between VM interface ports, both VM interfaces must support tagging and be configured to accept tagged VLANs. When a frame is tagged, a 12-bit frame VLAN ID is added to the 802.1Q header, so upstream VM interfaces know which VLAN ID the frame belongs to. The 12-bit VLAN ID is read and the frame is forwarded to the appropriate VLAN. When a frame is received with no 802.1Q header, the upstream VMIF classifies the frame using the default or native VLAN assigned to the Trunk port. The native VLAN allows a VM interface to associate untagged frames to a VLAN when no 802.1Q frame is included in the frame. This setting is disabled by default. |
| Allowed VLANs | Selecting Trunk as the mode enables the Allowed VLANs parameter. Add VLANs that exclusively send packets over the VM interface. The available range is from 1 - 4094. The maximum number of entries is 256. |