Hello !
Could you please help us.
we are having intermittentent network connection losts with ibm 600e laptops with 3com 3c575c 10/100 pcmcia cards ( with or without docking stations).
laptops are windows xp's. switches are 1924 ver V8.01.02 : Standard Edition and 1924 . connections have been tested also with Version V9.00.04 (Enterprise Edition Software without vtp or trunks :only one vlan is used)
But without any improvement to the situation. Problem started after upgrading laptop from nt to xp.
Problem: intermitently twice a day network connection stops working, ping packet loss is 80% . link is not flapping : it stays up. sometimes connections start working after booting 5 times laptop or after one day without doing anything. when there is a problem strange thing happens.
suddenly switch sees several strange mac-addresses in port table ( there are also the actual mac-address)
here are wrong mac-addresses. Lists were taken within one hour when ping packet loss was 80% . The actual mac-address is
0050.048F.6012
ka-6#sh mac-address-table int eth 0/5
Address Dest Interface Type Source Interface List
----------------------------------------------------------------------
B064.5F25.0050 Ethernet 0/5 Dynamic All
0000.0100.0000 Ethernet 0/5 Dynamic All
0001.0005.0013 Ethernet 0/5 Dynamic All
0050.048F.6012 Ethernet 0/5 Dynamic All
3AC8.FF53.6444 Ethernet 0/5 Dynamic All
0000.0000.0000 Ethernet 0/5 Dynamic All
E400.6B00.6100 Ethernet 0/5 Dynamic All
0200.0000.0000 Ethernet 0/5 Dynamic All
ka-6#sh mac-address-table int eth 0/5
Address Dest Interface Type Source Interface List
----------------------------------------------------------------------
7000.7500.6E00 Ethernet 0/5 Dynamic All
0000.0100.0000 Ethernet 0/5 Dynamic All
0050.048F.6012 Ethernet 0/5 Dynamic All
3AC8.FF53.6444 Ethernet 0/5 Dynamic All
0000.0000.0000 Ethernet 0/5 Dynamic All
E400.6B00.6100 Ethernet 0/5 Dynamic All
0200.0000.0000 Ethernet 0/5 Dynamic All
ka-6#sh mac-address-table int eth 0/5
Address Dest Interface Type Source Interface List
----------------------------------------------------------------------
7000.7500.6E00 Ethernet 0/5 Dynamic All
0000.0100.0000 Ethernet 0/5 Dynamic All
0050.048F.6012 Ethernet 0/5 Dynamic All
0000.0000.0000 Ethernet 0/5 Dynamic All
E400.6B00.6100 Ethernet 0/5 Dynamic All
0200.0000.0000 Ethernet 0/5 Dynamic All
ka-6#
ka-6#sh mac-address-table int eth 0/5
Address Dest Interface Type Source Interface List
----------------------------------------------------------------------
7000.7500.6E00 Ethernet 0/5 Dynamic All
7400.6500.2000 Ethernet 0/5 Dynamic All
0050.048F.6012 Ethernet 0/5 Dynamic All
0000.0000.0000 Ethernet 0/5 Dynamic All
0200.0000.0000 Ethernet 0/5 Dynamic All
ka-6#
ka-6#sh mac-address-table int eth 0/5
Address Dest Interface Type Source Interface List
----------------------------------------------------------------------
0000.B86A.1274 Ethernet 0/5 Dynamic All
2002.5801.13FE Ethernet 0/5 Dynamic All
0050.048F.6012 Ethernet 0/5 Dynamic All
ka-6#sh mac-address-table int eth 0/5
Address Dest Interface Type Source Interface List
----------------------------------------------------------------------
0000.B86A.1274 Ethernet 0/5 Dynamic All
2002.5801.13FE Ethernet 0/5 Dynamic All
0050.048F.6012 Ethernet 0/5 Dynamic All
0000.0000.0000 Ethernet 0/5 Dynamic All
Any help is appreciated !
TIA
Best Regards,
Susanna U
