Issue

If there is a "network <network number>/<mask> area <area ID>" command present in the Quagga configuration, the "ip ospf area <area ID>" command is rejected with the error "Please remove network command first." This prevents you from configuring other areas on some of the unnumbered interfaces.

Steps to Reproduce

Here is a sample configuration from ospfd.conf that illustrates the problem:

router ospf
 log-adjacency-changes detail
 ospf router-id 0.0.0.17
 network 14.0.0.0/8 area 0.0.0.0
 passive-interface swp4
 passive-interface swp5
 passive-interface swp6
 passive-interface swp7
 passive-interface swp8
!
interface swp1
 ip ospf area 0.0.0.0
!
interface swp2
 ip ospf area 0.0.0.1
!
interface swp3
 ip ospf area 0.0.0.1
!

Solution

Cumulus Linux supports both commands, but not in the same configuration.