LBI-38962
7
For this example, it is assumed that you have chosen to assign Network Address 128.1.0.0 to your EDACS
Network. Remember that since each network address must be unique, 128.1.0.0 should be reserved so that it is
not used by any one else on the internet.
Host A
CAP
Host B
IP Host Network
Internal EDG Network
TSI
EDACS Network
EDG
1.0.0.0
199.0.0.0
128.1.0.0
Radio/RDI/RDT
Radio/RDI/RDT
Radio/RDI/RDT
An
IP host internet with Network Addresses assigned
ASSIGNING INDIVIDUAL ADDRESSES
After the Network Addresses have been decided upon, individual addresses within each network should be
assigned.
On the IP Host Network, for the purposes of this example, Host A has previously been assigned an address of
1.0.15.12 and Host B has previously been assigned an address of 1.0.15.13. The EDG CAP Board's Host
Network Interface must also be assigned an individual address based upon the Network Address 1.0.0.0. For this
example, it is assumed that address 1.0.15.14 has been chosen.
For the EDG Internal Network, the EDG can auto-configure the IP addresses of its CAP, TSI, and HDI boards.
While this can be overridden by explicitly assigning individual addresses to each board, it's simplest to let the
EDG do the work.
For the EDACS Network, an IP address must be assigned to every LID and GID being used in the system.
The simplest way to map IP Addresses to LIDs is to map all of the LIDs to a block of IP Addresses in such a way
that there is a one-to-one correspondence between the LIDs and the Host ID portion of the IP Addresses.
Assuming the LIDs start at 64, the IP Addresses would start at 128.1.0.64. By allocating an IP Address for all
possible LIDs now, future maintenance is reduced.
To compute the next available block of IP Addresses for the Groups, the Host ID portion of the IP Address of the
highest LID (16382) can be converted to hex to get a value of 0x3ffe. Next, the octets can be individually
converted back to decimal to get an IP Address of 63.254 (128.1.63.254). IP Address 128.1.64.0 can be used as
the starting address for the GIDs to keep a one-to-one correspondence between the GIDs and the IP Addresses.