I enter the following command to configure eigrp using a wildcard mask, and I get the output "invalid input detected at" under the first character of the wildcard mask. This same command works on all other routers in the network. The command seems correct? Why this router?
R2(config)#router eigrp 100
R2(config-router)#network 18.104.22.168 0.0.0.255
% Invalid input detected at '^' marker.
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