[c-nsp] subnet mask confusion?

[sky vader]

Hello,

when using the following mask errors out as bad mask when used on an 
interface.

labasa(config-if)# ip address 10.0.10.100 255.0.255.255
ERROR: Bad mask 255.0.255.255 for address 10.0.1.100


works on an access-list,

labasa(config-if)#access-list 101 extended permit ip any 10.0.10.150 
255.0.255.255

Just wondering what am I missing?


sky