On our router the serial sub-interface is configured as follows:
Serial0.16 is up, line protocol is up
Internet address is 66.109.100.10/30
If I want to add a secondary ip to the interface
(config-subif)#ip address 66.109.100.8 255.255.255.252 secondary
I get this error
Bad mask /30 for address 66.109.100.8
I want to configure this ip on the router and port-map smtp to it. Why
would it not allow me to use /30 for the subnet mask. And how do I get
around this?
Mark
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