Data Transfer Problems

FarSync Trouble Shooting Guide – Data Transfer

Problem Symptom Possible Cause(s) Action
During data transfer, RR poll frames are transmitted, and eventually the link resets. T1 too short. Reconfigure the T1 timeout period to a longer value:
refer to the TIMERS T1 command in the setup.x25 file.
An X.25 Reset Request packet is sent with diagnostic code 0x01. The layer 3 default window size configuration is incorrect (too small).. Reconfigure the layer 3 window size: refer to the WINDOW LEVEL3 NORMAL command in the setup.x25 file.
An X.25 Reset Indication packet is received with diagnostic code 0x01. The layer 3 default window size configuration is incorrect (too large). Reconfigure the layer 3 window size: refer to the WINDOW LEVEL3 NORMAL command in the setup.x25 file.
When receiving bulk data (for example, when connected to a data feed service), data transfer is slower than is expected.
The layer 3 default window size configuration is incorrect (too large). Reconfigure the layer 3 window size: refer to the WINDOW LEVEL3 NORMAL command in the setup.x25 file.
Caution: if you decrease the window size too much, you may get a different problem (see above).
When transmitting, bulk data transfer is slower than is expected. The layer 3 default transmit window size configuration is incorrect (too small).
Reconfigure the layer 3 window size: refer to the WINDOW LEVEL3 NORMAL command in the setup.x25 file.
Caution: if you increase the window size too much, you may get a different problem (see above).
An X.25 Reset Request packet is sent with diagnostic code 0x27. The layer 3 default packet size configuration is incorrect (too small). Reconfigure the layer 3 packet size: refer to the PACKET SIZES NORMAL command in the setup.x25 file.
An X.25 Reset Indication packet is received with diagnostic code 0x27. The layer 3 default packet size configuration is incorrect (too large). Reconfigure the layer 3 packet size: refer to the PACKET SIZES NORMAL command in the setup.x25 file.
During data transfer, a FRMR frame with the Y-bit set is sent (resulting in the link being restarted and the call being cleared). The layer 3 default packet size configuration is incorrect (too small). Reconfigure the layer 3 packet size: refer to the PACKET SIZES NORMAL command in the setup.x25 file.
During data transfer, a FRMR frame with the Y-bit set is received (resulting in the link being restarted and the call being cleared). The layer 3 default packet size configuration is incorrect (too large). Reconfigure the layer 3 packet size: refer to the PACKET SIZES NORMAL command in the setup.x25 file.

05-Oct-2011