hi,
my problem:
i have a 3640 router which has a "production"-dlsw connection to a 7513 router.
i also configured a "backup"-dlsw connection to a backup 7513 router with the "backup-peer"
command.
everything looks fine - if the prodconnection fails the 3640 turns over to the backup7513.
if the prod7513 comes back again and the linger timer goes over, the 3640 gets the connection
back to the prod7513 and turns of the dlsw-connection to the backup7513.
so far - so good.
but if the enddevice tries to connect it fails for several times.
after about 10 to 15 minutes the connection is ok.
i checked the dlsw reachability-cache in the 3640 (sh dlsw reach) and saw that it could not find
the mac-adr for the 10 to 15 minutes.
the two 3640 are connected over two escon-channels to a ibm host.
i turned on "debug dlsw reach", ... and saw that the 3640 sends out a "test-frame" and
there was no response from the prod7513.
after the 10 to 15 minutes everything is ok - the 3640 sends the test-frame - the pro7513
sends a response and so on - everything ok.
i really do not understand why it takes so long that the prod7513 needs so long
to answer to the test-frame.
any idea ????
here is debug:
XOT-GW1#sh dlsw re
DLSw Local MAC address reachability cache list
Mac Addr status Loc. port rif
4000.1111.0000 FOUND LOCAL Serial0/1 --no rif--
4000.7507.1000 SEARCHING LOCAL
DLSw Remote MAC address reachability cache list
Mac Addr status Loc. peer
4000.7507.1000 SEARCHING REMOTE
DLSw Local NetBIOS Name reachability cache list
NetBIOS Name status Loc. port rif
DLSw Remote NetBIOS Name reachability cache list
NetBIOS Name status Loc. peer
XOT-GW1#
Jan 3 18:26:38.348: CSM: smac 4000.1111.0000, dmac 4000.7507.1000, ssap 4 , d
sap 4
Jan 3 18:26:38.348: DISP Sent : CLSI Msg : TEST_STN.Req dlen: 46
Jan 3 18:26:53.344: Serial0/1: X.25 O R1 Clear (5) 8 lci 1
Jan 3 18:26:53.344: Cause 0, Diag 114 (DTE originated/International protocol
problem)
Jan 3 18:26:53.344: Serial0/0: X.25 I R1 Clear (5) 8 lci 1
Jan 3 18:26:53.344: Cause 0, Diag 114 (DTE originated/International protocol
problem)
Jan 3 18:26:53.344: [10.22.223.10,15198/10.18.254.221,1998]: XOT O P4 Clear (5)
8 lci 1
Jan 3 18:26:53.344: Cause 0, Diag 114 (DTE originated/International protocol
problem)
Jan 3 18:26:53.600: [10.22.223.10,15198/10.18.254.221,1998]: XOT I P6 Clear Con
firm (3) 8 lci 1
Jan 3 18:26:53.600: Serial0/0: X.25 O R1 Clear Confirm (3) 8 lci 1
Jan 3 18:26:53.604: Serial0/1: X.25 I R1 Clear Confirm (3) 8 lci 1
Jan 3 18:26:54.141: DLSw: Keepalive Request sent to peer 10.18.254.243(2065))
Jan 3 18:26:54.145: DLSw: Keepalive Response from peer 10.18.254.243(2065)
XOT-GW1#
XOT-GW1#
XOT-GW1#
XOT-GW1#
it really looks that the 7513 sends no answer to the test-frame !
thanks for an answer !
