Cisco processes the area commands sequentially and stops at the first match. So in the example: >router ospf 10 > network 203.250.13.1 0.0.0.0 area 1 > network 203.250.0.0 0.0.255.255 area 0.0.0.0 If it is processing interface 203.250.13.1 it will stop on the first line and match it with area 1. If it were processing interface 203.250.13.2 then it would match on the second line and put it into area 0. Remember that the 255 means that any number in that octet will match so the second line will match any address that starts with 203.250. Now switch the two lines: network 203.250.0.0 0.0.255.255 area 0.0.0.0 network 203.250.13.1 0.0.0.0 area 1 Now if it processess interface 203.250.13.1 it will stop on the first line and put it into area 0 since that line only cares about the first two octets 203.250 That is why the ordering is important. Did I make any sense at all? I'm not the best at explaining things. _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]