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Cisco StackWise 3850

JavaJunkie
Level 1
Level 1

Hello, normally our shop uses two physical core(Core1 and Core2) switches in a HSRP configuration using PAgP between the two switches.  Each of these switches has a redundant layer 3 link to devices further upstream in the network.  If Core A fails, Core B can still route traffic upstream and vise versa.  So far so good, everyone is happy.

Now they want me to do the same thing except they want it done using a stackwise configuration for both of these core switches.  So Core1 and Core2 are in one logical switch configuration. 

Knowing this, how do I keep my redundant links to the upstream devices if this is just one logical switch?  I must be having a mind melt down, because I can't get my head around this.

Any help would be greatly appreciated.