I have router 876 but cisco was configured . So i made reset an it's clear now. But I cant find any way or doc how to setup this router for the load SDM to router. any ip address setup command ends with "IP addresses may not be configured on L2 links ". Is there some reading for step by step solution how to configure this router to get SDM-aware router ?
You may well not be able to put an ip address on the 4 Fast ethernet switch ports.
What you do is assign the ports to a VLAN (by default they are in VLAN1) and then put an address on the vlan interface (jargon is SVI, switched virtual interface).
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