https://community.hpe.com/t5/switches-hubs-and-modems/foundry-ha-and-procurve-qinq/m-p/4312387#M16661 Hi,<BR /><BR />i don't know anything on your setup but have you checked the tag-type in qinq to match eachother? Mon, 22 Dec 2008 14:52:12 GMT Marcus J 2008-12-22T14:52:12Z https://community.hpe.com/t5/switches-hubs-and-modems/foundry-ha-and-procurve-qinq/m-p/4312386#M16660 Hi,<BR />I need to implement two Foundry SLBs in failover mode (Hot Standby) on two Data Centers. Currently we are running QinQ on 5400zl switches to link both sites but it seems the Foundry boxes can not communicate on Layer 2 and this is a required condition for the failover. How can I manage to have it working ? I know that it works fine on Cisco boxes running QinQ when CDP packets tuneling is enabled.<BR />Thanks for your help ! Tue, 25 Nov 2008 09:09:37 GMT https://community.hpe.com/t5/switches-hubs-and-modems/foundry-ha-and-procurve-qinq/m-p/4312386#M16660 maciek_4 2008-11-25T09:09:37Z https://community.hpe.com/t5/switches-hubs-and-modems/foundry-ha-and-procurve-qinq/m-p/4312387#M16661 Hi,<BR /><BR />i don't know anything on your setup but have you checked the tag-type in qinq to match eachother? Mon, 22 Dec 2008 14:52:12 GMT https://community.hpe.com/t5/switches-hubs-and-modems/foundry-ha-and-procurve-qinq/m-p/4312387#M16661 Marcus J 2008-12-22T14:52:12Z