8.2.207 Multicast Transport Information
29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS
The Multicast Transport Information IE contains the Low Layer Source Specific IP Multicast Address allocated by the MB-UPF. It is coded as specified in Figure 8.2.207-1.
The IP Multicast Distribution Address and the IP Source Address fields contain the IPv4 or IPv6 address. The Address Type and Address Length fields shall be included in each field:
– The Address Type, which is a fixed length code (of 2 bits) identifying the type of address that is used in the Address field.
– The Address Length, which is a fixed length code (of 6 bits) identifying the length of the Address field.
– The Address, which is a variable length field shall contain either an IPv4 address or an IPv6 address.
Address Type 0 and Address Length 4 shall be used when Address is an IPv4 address.
Address Type 1 and Address Length 16 shall be used when Address is an IPv6 address.
Other combinations of values are not valid.
Common Tunnel Endpoint Identifier is allocated at the source Tunnel Endpoint and signalled to the destination Tunnel Endpoint. There is one Common Tunnel Endpoint Identifier allocated per MBS session.
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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|
1 to 2 |
Type = 306 (decimal) |
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3 to 4 |
Length=n |
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5 |
Spare |
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6 to 9 |
Common Tunnel Endpoint Identifier |
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10 |
Address Type |
Address Length |
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11 to K |
IP Multicast Distribution Address (IPv4 or IPv6) |
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K+1 |
Address Type |
Address Length |
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(k+2) to m |
IP Source Address (IPv4 or IPv6) |
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(m+1) to n |
These octet(s) is/are present only if explicitly specified |
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Figure 8.2.207-1: Multicast Transport Information