Hi everyone! First of all sorry my bad English, it isn't my native language.
I've got a model of network, consisting of 4 switches (see "Test Network 1" file):
C3750G-24TS (Central, 12.2.37-SE (ADVANCED IP SERVICES))
C3750-48TS (Office_1, 12.2.37-SE (ADVANCED IP SERVICES))
C3550-48 (Office_2, C3550-48 EMI 12.2.37-SE (IP SERVICES))
C3550-48 (Office_3, C3550-48 EMI 12.2.37-SE (IP SERVICES))
See their config files in attachments
Network topology is a star. Without redundant links everything works fine.
When I'm enabling redundant links... (see "Test Network 1" file)... on switches which has bridge groups in their configs appears error messages like that:
%SW_MATM-4-MACFLAP_NOTIF: Host 001a.a164.0f01 in bridge group 1 is flapping between port Vl20 and port Vl10
%SW_MATM-4-MACFLAP_NOTIF: Host 001a.a164.0f02 in bridge group 1 is flapping between port Fa0/1 (Vl30) and port Fa0/1 (Vl10)
And so on... (See "Spanning tree" text file)
I suppose this is MAC-address of root switch in Spanning Tree. And I can't do anything to resolve this problem.
I found nothing in Cisco docs. Can you help me please?
P.S. This network model simulates a part of real network. Bridge groups are used to forward IPX between VLANs. I guess that no L3 topology solution is possible in this situation.