8.2.200 IP Address and Port Number Replacement
29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS
The IP Address and Port Number Replacement IE type shall be encoded as shown in Figure 8.2.200-1. It contains instructions to modify the contents of the (inner) packet.
|
Bits |
||||||||||
|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 to 2 |
Type = 293 (decimal) |
|||||||||
|
3 to 4 |
Length = n |
|||||||||
|
5 to 6 |
Spare |
SPN |
SIPV6 |
SIPV4 |
DPN |
DIPV6 |
DIPV4 |
|||
|
p to (p+3) |
Destination IPv4 Address |
|||||||||
|
q to (q+15) |
Destination IPv6 Address |
|||||||||
|
r to (r+1) |
Destination Port Number |
|||||||||
|
s to (s+3) |
Source IPv4 Address |
|||||||||
|
t to (t+15) |
Source IPv6 Address |
|||||||||
|
u to (u+1) |
Source Port Number |
|||||||||
|
v to (n+4) |
These octet(s) is/are present only if explicitly specified |
|||||||||
Figure 8.2.200-1: IP Address and Port Number Replacement
The following flags are coded within Octet 5:
– Bit 1 – DIPV4: If this bit is set to "1", then the Destination IPv4 field shall be present, otherwise the Destination IPv4 field shall not be present.
– Bit 2 – DIPV6: If this bit is set to "1", then the Destination IPv6 field shall be present, otherwise the Destination IPv6 field shall not be present.
– Bit 3 – DPN: If this bit is set to "1", then the Destination Port Number field shall be present, otherwise the Destination Port Number field shall not be present.
– Bit 4 – SIPV4: If this bit is set to "1", then the Source IPv4 field shall be present, otherwise the Source IPv4 field shall not be present.
– Bit 5 – SIPV6: If this bit is set to "1", then the Source IPv6 field shall be present, otherwise the Source IPv6 field shall not be present.
– Bit 6 – SPN: If this bit is set to "1", then the Source Port Number field shall be present, otherwise the Source Port Number field shall not be present.
– Bit 7 to 8: Spare, for future use and set to "0".
When present, the Destination IPv4 Address field or the Source IPv4 Address field shall contain the destination or source IPv4 address respectively to set in the IPv4 header of the outgoing packet.
When present, the Destination IPv6 Address field or the Source IPv6 Address field shall contain the destination or source IPv6 address respectively to set in the IPv6 header of the outgoing packet.
When present, the Destination Port Number field or the Source Port Number field shall contain the destination or source Port Number respectively to set in the UDP header of the outgoing packet.
At least one IP address shall be present.