8.14 PDN Address Allocation (PAA)
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
The PDN Address Allocation is coded as depicted in Figure 8.14-1.
NOTE: The Prefix Length within PAA IE has a fixed value of /64.
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 |
Type = 79 (decimal) |
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2 to 3 |
Length = n |
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4 |
Spare |
Instance |
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5 |
Spare |
PDN Type |
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6 to (n+4) |
PDN Address and Prefix |
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Figure 8.14-1: PDN Address Allocation (PAA)
Table 8.14-1: PDN Address Allocation
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PDN type value (octet 5) |
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Bits |
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3 |
2 |
1 |
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0 |
0 |
1 |
IPv4 |
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0 |
1 |
0 |
IPv6 |
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0 |
1 |
1 |
IPv4v6 |
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1 |
0 |
0 |
Non-IP |
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1 |
0 |
1 |
Ethernet |
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All other values are reserved. |
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Bits 8-4 of octet 5 are spare and shall be coded as zero. |
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PDN Address and Prefix (octet 6 to n+4) |
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If PDN type value indicates IPv4, an IPv4 address is present in the PDN Address and Prefix from octet 6 to octet 9. Bit 8 of octet 6 represents the most significant bit of the IPv4 address and bit 1 of octet 9 the least significant bit. |
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If PDN type value indicates IPv6, octet 6 contains the IPv6 Prefix Length. Octets 7 through 22 contain an IPv6 Prefix and Interface Identifier. Bit 8 of octet 7 represents the most significant bit of the IPv6 Prefix and Interface Identifier and bit 1 of octet 22 the least significant bit. |
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If PDN type value indicates IPv4v6, octet 6 contains the IPv6 Prefix Length. Octets 7 through 22 contain an IPv6 Prefix and Interface Identifier. Bit 8 of octet 7 represents the most significant bit of the IPv6 Prefix and Interface Identifier and bit 1 of octet 22 the least significant bit. Octets 23 through 26 contain an IPv4 address. Bit 8 of octet 23 represents the most significant bit of the IPv4 address and bit 1 of octet 26 the least significant bit. If PDN type value indicates Non-IP or Ethernet, octets from 6 to ‘n+4’ shall not be present. |
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