8.2.70 Remote GTP-U Peer
29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS
The Remote GTP-U Peer IE shall be encoded as depicted in Figure 8.2.70-1.
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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 = 103 (decimal) |
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3 to 4 |
Length = n |
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5 |
Spare |
NI |
DI |
V4 |
V6 |
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m to (m+3) |
IPv4 address |
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p to (p+15) |
IPv6 address |
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q to (q+1) |
Length of Destination Interface field |
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(q+2) to r |
Destination Interface field |
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s to (s+1) |
Length of Network Instance field |
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(s+2) to t |
Network Instance field |
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k to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.2.70-1: Remote GTP-U Peer
The following flags are coded within Octet 5:
– Bit 1 – V6: If this bit is set to "1", then the IPv6 address field shall be present, otherwise the IPv6 address field shall not be present.
– Bit 2 – V4: If this bit is set to "1", then the IPv4 address field shall be present, otherwise the IPv4 address field shall not be present.
– Bit 3 – DI: If this bit is set to "1", then the Length of Destination Interface field and the Destination Interface field shall be present, otherwise both the Length of Destination Interface field and the Destination Interface field shall not be present.
– Bit 4 – NI: If this bit is set to "1", then the Length of Network Instance field and the Network Instance field shall be present, otherwise both the Length of Network Instance field and the Network Instance field shall not be present.
– Bit 5 to 8 – Spare, for future use and set to "0".
Either the V4 or the V6 bit shall be set to "1".
Octets "m to (m+3)" and/or "p to (p+15)" (IPv4 address / IPv6 address fields), if present, shall contain the respective address values.
The Destination Interface field, when present, shall be encoded as the same as Destination Interface IE (from octet 5, i.e. excluding Type and Length) specified in clause 8.2.24.
The Network Instance field, when present, shall be encoded as the same as Network Instance IE (from octet 5, i.e. excluding Type and Length) specified in clause 8.2.4.