RAD Data comm IPmux-11 - Manual (Page 24)

Chapter 1 Introduction Installation and Operation Manual
1-10 Functional Description IPmux-11 Ver. 2.00
VLAN Support
VLAN, according to IEEE 802.1p&Q, adds four bytes to the MAC layer of the
Ethernet frame. The user can set the contents of these bytes, MAC layer priority
and VLAN ID. In this mode, only VLAN format frames are sent and received by
IPmux-11.
Figure 1-7 shows the VLAN tag format.
802.1D Tag Protocol Type
81 00
user_priority
CF
I =
0
VID
8 6 5 4 1 8 1
Priority VLAN ID
Figure 1-7. VLAN Tag Format (802.1p&Q)
UDP Support
Table 1-3. UDP Ports Definition
Field Length (Bits) Field Description Value Function
2 bytes UDP Source Port 2–497d* Destination timeslots bundle
2 bytes UDP Destination Port 2142d Standard TDMoIP UDP port
* The MSB of this field can be either 1 or 0 for inband end-to-end proprietary signaling.
The UDP Source Port field is used for destination timeslots bundle indication.
For more information about VLAN tagging, refer to IEEE standard 802.1p&Q.
TDMoMPLS
Figure 1-9 and Table 1-4 illustrate TDMoMPLS frame structure.
CRC TDM Payload CW MPLS ETH
Figure 1-8. TDMoMPLS Frame Structure
Note