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Packet over SDH (POS)
Setting IP Header
Setting IP Header
Description
Note the IP Header is sent in every packet.
How To
1 This procedure assumes you have already selected a POS payload on the MAIN
SETTING page, see "Setting up the Transmitter for POS Payloads" page 185.
2 Select the
3 Set the SETUP field to
4 Select the TYPE OF SERVICE field and set up the 8 bits as required. This field
is used to specify the service precedence of datagrams during their transmission
through the internet system.
5 Select the FLAGS field to control fragmentation of packets and using the edit
keys set each flag to 0 or 1.
6 Select the TIME TO LIVE field and select a value from 0 to 255 (instrument
default value is 64). Each Router will decrement the TTL value as it passes
through. When it reaches zero the packet is destroyed.
7 Select the PROTOCOL field and choose from the following preset values:
ICMP (1), IP (4), TCP (6), UDP (17), ICMP or program the USER PROGRAM
value (0 to 255). The instrument default choice is TCP. This field indicates the
next level protocol used in the data portion of the internet datagram (the value in
brackets indicates the value of the byte in decimal (i.e. (6) indicates binary
00000110).
192
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folder as shown below:
POS SETTINGS
.
IP HEADER
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