Enable/Disable subnet Zero in Cisco Routers (IOS 12.x)
2008-04-16
When you subnet a network into multiple subnets, the first subnet created is called the Subnet Zero whose network address will be exactly be the same as the actual Network Address. This can create confusions and importantly in legacy hardware can cause routing issues. However, newer network routers and Cisco Routers running Cisco IOS 12.x can handle these Subnet-Zero without any problem. Cisco IOS 12.x by default enables subnet-zero. If you’re new here, you may want to subscribe to my RSS feed. Thanks for visiting!Read More →