RAD Data comm IPmux-11 operation manual Vlan Support, UDP Support, TDMoMPLS, UDP Ports Definition

Chapter 1 Introduction Installation and Operation Manual

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 1-7shows the VLAN tag format.

81 00

802.1D Tag Protocol Type

user_priority		0				VID
		CFI =
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.

Note 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 1-9and Table 1-4illustrate TDMoMPLS frame structure.

CRC

TDM Payload

CW

MPLS

ETH

Figure 1-8. TDMoMPLS Frame Structure

1-10 Functional Description IPmux-11 Ver. 2.00