Once the VT-Rnet connection has been installed, there are some steps that need to be taken before your connection is fully activated and ready for use.
- Register the MAC addressThe VT-Rnet network uses DHCP (IPv4) and stateless auto configuration (IPv6) to obtain network addresses. In order for the connection to obtains an IP address, the MAC address of the 10-Gbps network interface needs to be registered. For the purposes of VT-Rnet, we ask that a faculty member perform the registration.
- Configure routing
If the VT-Rnet is the only connection on the machine, it will get the default route automatically. No configuration is necessary.
If there are multiple interfaces on the machine, a request may come from the 10-Gbps interface but return on another interface which is on a different subnet. As the network has been configured to drop packets which do not originate on the subnet, the reply will be dropped causing the request will fail. There are two solutions. The easiest is to bring down all other interfaces. If it is necessary to have multiple interfaces, the solution is to implement policy routing which configures the operating system to always send replies back on the interface they arrived on. [Check back later for instructions on configuring priority routing.]
- Configure dynamic DNS updates
Network addresses in VT-Rnet are always assigned dynamically so how are clients supposed to learn the address of a server on VT-Rnet? Even though the likelihood of a dynamically assigned address changing for a machine on VT-Rnet is small, it is possible. Therefore the server runs dynamic DNS software and updates its DNS record whenever its address changes. Clients using the host name of the server will always get addresses which are valid for the server.
[Check back later for instruction on configuring dynamic DNS updates.]