Data Transfer Problems

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.

Last updated: 22 Mar 2004