I have several Cisco 891 (no wireless) in my inventory and I'm seeing a common reoccurring problem. When the wan ports on a Cisco 891 are connected to other Cisco 891 wan ports or when connected to a KG-175d Taclane encryptor I get felonious readings. The show interface command tells me its up but my GRE tunnel is down and I cant ping the local interface. Doing a shut/no shut on the wan interface does nothing to restore the problem. The only way to snap the WAN port out of its weird state is to cycle the power. This isn't an acceptable answer for my customers. Any thoughts?
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