Motorola WiNG 5.5 Reference Manual page 292

5 - 206 WiNG 5.5 Access Point System Reference Guide
Duplex
Cisco Discover Protocol
Receive
Cisco Discover Protocol
Transmit
Link Layer Discovery
Protocol Receive
Link Layer Discovery
Protocol Transmit
10. Set (or override) the following
Mode
Native VLAN
Tag Native VLAN
Select either half, full or automatic as the duplex option. Select Half duplex to send data
over the port, then immediately receive data from the same direction in which the data
was transmitted. Like a full-duplex transmission, a half-duplex transmission can carry
data in both directions, just not at the same time. Select Full duplex to transmit data to
and from the port at the same time. Using full duplex, the port can send data while
receiving data as well. Select Automatic to enable to the access point to dynamically
duplex as port performance needs dictate. Automatic is the default setting.
Select this option to allow the Cisco discovery protocol for receiving data on this port. If
enabled, the port sends out periodic interface updates to a multicast address to advertise
its presence to neighbors.
Select this option to allow the Cisco discovery protocol for transmitting data on this port.
If enabled, the port sends out periodic interface updates to a multicast address to
advertise its presence to neighbors.
Select this option to allow the Link Layer discovery protocol to be received on this port. If
enabled, the port sends out periodic interface updates to a multicast address to advertise
its presence to neighbors. This option is enabled by default.
Select this option to allow the Link Layer discovery protocol to be transmitted on this port.
If enabled, the port sends out periodic interface updates to a multicast address to
advertise its presence to neighbors.
Switching Mode parameters to apply to the Ethernet port configuration:
Select either the Access or Trunk radio button to set the VLAN switching mode over the
port. If Access is selected, the port accepts packets only form the native VLANs. Frames
are forwarded out the port untagged with no 802.1Q header. All frames received on the
port are expected as untagged and are mapped to the native VLAN. If the mode is set to
Trunk, the port allows packets from a list of VLANs you add to the trunk. A port configured
as Trunk supports multiple 802.1Q tagged VLANs and one Native VLAN which can be
tagged or untagged. Access is the default mode.
Use the spinner control to define a numerical Native VLAN ID from 1 - 4094. 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 which untagged
traffic will be directed over when using a port in trunk mode. The default VLAN is 1.
Select this option to tag the native VLAN. The IEEE 802.1Q specification is supported for
tagging frames and coordinating VLANs between devices. IEEE 802.1Q adds four bytes to
each frame identifying the VLAN ID for upstream devices that the frame belongs. If the
upstream Ethernet device does not support IEEE 802.1Q tagging, it does not interpret the
tagged frames. When VLAN tagging is required between devices, both devices must
support tagging and be configured to accept tagged VLANs. When a frame is tagged, the
12 bit frame VLAN ID is added to the 802.1Q header so upstream Ethernet devices 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 device classifies the frame using the default or native VLAN assigned to the
Trunk port. The native VLAN allows an Ethernet device to associate untagged frames to a
VLAN when no 802.1Q frame is included in the frame. This feature is disabled by default.