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Hi, liuguiqing,I didn't see any misunderstandings in your posted outputs. Just, you probably cut off a part of the output for the S6; I don't see the port which is connected to the S5 in the blocked state.My suggestion is to use some sniffer to resol...
Hi, liuguiqing,I think, there could be the problem that you deleted VLAN 3808 only at one side. If you want to delete definite VLAN from trunk you should do that on both side. Do show output for ARP of S5 and S6 IP-addresses and look they learned tho...