https://community.hpe.com/t5/switches-hubs-and-modems/member-cannot-join-stack/m-p/4787031#M25960 I am trying to add a switch to the stack by using command stack join <MAC-ADDRESS><BR />when i do a show stack, member status: Join Failure: undiscoverd.<BR /><BR />I have double checked the mac-address of the commander ok.<BR /><BR />Please advise...!</MAC-ADDRESS> Thu, 12 May 2011 04:43:27 GMT PEI_1 2011-05-12T04:43:27Z https://community.hpe.com/t5/switches-hubs-and-modems/member-cannot-join-stack/m-p/4787031#M25960 I am trying to add a switch to the stack by using command stack join <MAC-ADDRESS><BR />when i do a show stack, member status: Join Failure: undiscoverd.<BR /><BR />I have double checked the mac-address of the commander ok.<BR /><BR />Please advise...!</MAC-ADDRESS> Thu, 12 May 2011 04:43:27 GMT https://community.hpe.com/t5/switches-hubs-and-modems/member-cannot-join-stack/m-p/4787031#M25960 PEI_1 2011-05-12T04:43:27Z https://community.hpe.com/t5/switches-hubs-and-modems/member-cannot-join-stack/m-p/4787032#M25961 can it be the "undiscovered" switch does not support stacking?<BR /><BR />please specify the models.<BR /><BR />otherwise there may not be a matching vlan for the stack master to communicate with the member.<BR /><BR /> Tue, 07 Jun 2011 06:26:10 GMT https://community.hpe.com/t5/switches-hubs-and-modems/member-cannot-join-stack/m-p/4787032#M25961 Pieter 't Hart 2011-06-07T06:26:10Z