Intel IXP2400, Руководство пользователя

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Development Tools User’s Manual 103
IXP2400/IXP2800 Network Processors
Developer Workbench
4. Enter values directly into the boxes.
— If you want the packet length to be automatically computed based on the length of the
encapsulated payload, select Computed next to the Packet length box. Otherwise, the
value you enter will be used without modification.
— If you want the header checksum to be automatically computed, select Computed next to
the Header checksum box. Otherwise, the value you enter will be used without
modification.
— If you are creating multiple frames and want each frame to have a different value for the
Source IP address or Destination IP address , click Advanced next to the corresponding
address box.
The Specify how you want... dialog appears.
In the Frame size (in bytes) area:
— Click Single if you want all frames to have the same address then specify the address.
— Click From within range if you want addresses chosen from a range which you specify.
To have addresses chosen sequentially from within the range, starting within the range’s
lower bound, click
Sequential . For random selection of addresses from within the range,
click Random .
— Click From list if you want
addresses chosen from a list
that you specify.
— To add an address to the list,
enter the address in the box to the right of the list then click Add Address .
— To delete an address from the list, select it then click the button.
— To move an address up or down in the list, select it and click the or the button.
— To have addresses chosen sequentially from the list, starting within the first address in the
list, click Sequential .
— To have addresses chosen randomly from the list, click Random .
2.12.10 Specifying a TCP Header
1. Create an Ethernet TCP/IP data stream (see Section 2.12.5 ) or a PPP TCP/IP data stream (see
Section 2.12.6 ).
2. In the Ethernet IP Data Stream dialog box, click Create Frames .
3. Click TCP Header .
4. Enter values directly into the boxes.
5. If you want the checksum to be automatically computed, select Computed next to the
Checksum box. Otherwise, the value you enter will be used without modification.
2.12.11 Specifying a Data Payload
1. Create or edit a data stream of any type containing frames.
2. Click the Data Payload button to display the options for specifying the data payload for a
frame.