Datasheet

____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
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Table 10-7. IPv4 Header Fields (UDP)
Field Description
IPVER IP version number. IPv4 IPVER=4
IHL Length in 32-bit words of the IP header, IHL=5
IP TOS IP type of service
Total Length Length in octets of IP header and data
Identification IP fragmentation identification
Flags IP control flags; must be set to 010 to avoid fragmentation
Fragment Offset Indicates where in the datagram the fragment belongs; not used for TDM-over-Packet
Time To Live IP time-to-live field; datagrams with zero in this field are to be discarded
Protocol Must be set to 0x11 to signify UDP
IP Header Checksum Checksum for the IP header
Source IP Address IP address of the source
Destination IP Address IP address of the destination
Table 10-8. UDP Header Fields
Field Description
Source Port Number,
Destination Port Number
Either the source or the destination port number holds the bundle identifier. The unused field can
be set to 0x85E (2142), which is the user port number assigned to TDM-over-Packet by the
Internet Assigned Numbers Authority (IANA).
For UDP/IP-specific OAM packets, the bundle identifier is all ones.
UDP length Length in octets of UDP header and data
UDP checksum Checksum of UDP/IP header and data. If not computed it must be set to zero.
10.6.1.3 UDP/IPv6 Header
Figure 10-14. UDP/IPv6 Header Format
IP
HEADER
UDP
HEADER