Catalyst 2950 to IBM Host connection

[ANDREA SALA]

Hi,

we have a couple of Catalyst 2950-12 to interconnect fast-ethernet interfaces coming from Cisco routers to two IBM HOSTs (OSA interface).

The first Catalyst has a 12.1(9)EA1 release and the connection with the HOST works fine.

The second Catalyst has a 12.1(11)EA1 release and the connection with the HOST doesn't work (the status is notconnected).

If we downgrade the second catalyst both works correctly.

The topology is loop-free.

The configuration of the Catalyst are:

#vlan database

#vtp mode transparent

#vtp domain L-SSB

#vlan 201 name DLSW-HOST-01

#vlan 991 name MGMT-2950-0

#interface FastEthernet0/3

#description LINK CON HOST – OSA #1 – VLAN 201

#switchport mode access

#switchport access vlan 201

#no ip address

#load-interval 30

#speed 100

#duplex full

#no shutdown

Someone knows why the 12.1(11) release presents this problem with the IBM HOST ?

Thanks.

[glen.grant]

I am assuming that you have looked to see if the vlan 201 is showing active and on the ports you want by doing a "show vlan " command . Sometimes people forget to activate the vlan even though it's defined on the ports , I would suggest going to 12.1.20 and this eliminates even having to mess around with the old vlan database .

[ANDREA SALA]

yes, the VLAN was up and running also because I have used my pc to test the port and everything was working. Only with the IBM Host the port isn't work.

thanks.