Datasheet

____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
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10.6.1.6 L2TPv3/IPv4 Header
Figure 10-17. L2TPv3/IPv4 Header Format
IP
HEADER
L2TPv3
HEADER
Table 10-12. IPv4 Header Fields (L2TPv3)
Field Description
IPVER
IHL
IP TOS
Total Length
Identification
Flags
Fragment Offset
Time To Live
See Table 10-7.
Protocol Must be set to 0x73 to signify L2TPv3
IP Header Checksum
Source IP Address
Destination IP Address
See Table 10-7.
Table 10-13. L2TPv3 Header Fields
Field Description
Session ID (32 bits) Locally significant L2TP session identifier, Contains the bundle identifier. All bundle identifiers are
available for use except 0, which is reserved.
Cookie (32 or 64 bits) Optional field that contains a randomly selected value used to validate association of the packet
with the expected bundle identifier