RAD Data comm IPmux-24 Specifications Page 40

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Chapter 1 Introduction Installation and Operation Manual
1-14 Functional Description IPmux-24 Ver. 1.5
MPLS Encapsulation (Ethernet and MPLS Networks)
Figure
1-13
and
Table
1-3
illustrate TDMoMPLS frame structure.
CRC TDM Payload CW MPLS ETH
Figure
1-9. TDMoMPLS Frame Structure
Table
1-3. TDMoMPLS Frame Structure
Field Length (Bytes) Field
7 Preamble
1 SFD
6 Destination MAC Address
6 Source MAC Address
2 Type
20 Outer label
3 EXP
1 Stacking bit
8 TTL
20 Inner label
3 EXP
1 Stacking bit
8 TTL
4 Control Word
...
Data
4 CRC
Payload Encapsulation
IPmux-24 supports the following payload encapsulation techniques: AAL1,
CESoPSN and SAToP.
ETH Layer
LLC Layer
Note: IEEE 802.1p&Q VLAN
Tagging (additional 4 bytes if
enabled)
ETH Layer
MPLS Layer
(Bits)
The inner label field is used to
transfer a destination bundle
number.
Data Layer
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