HELP!! Problem with SNA or GDLC

[swtbart]

Hi, we have a 7026-6H1 with sna installed to comunicate with a S/390.
From time to time the sna linkstation goes down and try to reconnect indefinitely. With an AIX reboot, the problem disappear.
The only information I'am able to collect is from /var/sna/sna.err related to GDLC. There aren´t errpt entries.

Error = cannot find the remote name (-920)
14:48:03 DFT 19 Jun 2003 1536-13(0-10) E (hostname)
GDLC rejected call to start LS.
LS = MVS
Error = cannot find the remote name (-920)
14:49:00 DFT 19 Jun 2003 1536-13(0-10) E (hostname)
GDLC rejected call to start LS.
LS = MVS
Error = cannot find the remote name (-920)


the linkstation:

Link Adjacent Node Device # of local In
station CP name type name State sessions use
-------------- ----------------- ----- --------- ---------- ---------- -----
MVS LEN ent1 Restarting 0 No


Routers, bridges, switches etc. are ok as said by Communications Staff.