The lab requirements were to enable authentication for RIP updates as follows

R2 and R4
R2 and R5
R2 and R6
R5, R6, and R7

Since R2 has two connections to R5 I created one key chain and applied it to 
both the s0/1/0.25 and s0/2/0 interfaces, however the DSG only shows the 
configuration on s0/1/0.25, and not on the s0/2/0
I know that Cisco best practice is one key-chain, per interface, per protocol, 
however was I wrong in my thinking here, the question stated between R2 and R5 
and to me that meant both links.

Thanks!

Steve Di Bias


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