Gathering Site Information 25One Server Pair If your VCX system contains one pair of servers, all software components,including UMS are included.■ You must dedicate six IP addresses, one for each of the two NICs ineach of the two servers, plus two more for use by the UMS IntelligentMirroring software.■ You must also dedicate IP addresses for use by the gateways:■ Each analog gateway requires one IP address■ Each digital gateway with 8 or fewer T1 spans requires one IPaddress■ Each digital gateway with more than 8 T1 spans requires two IPaddresses■ You must know the appropriate subnetwork mask for the networksegment on which you plan to install the servers.■ You must know the IP address of the network gateway for thatnetwork segment.Two Server Pairs If your VCX system has two server pairs, one pair is dedicated to UMS.The other pair contains all other software components.■ You must dedicate ten IP addresses, one for each of the two NICs ineach of the four servers, plus two more for use by the UMS IntelligentMirroring software.■ You must also dedicate IP addresses for use by the gateways:■ Each analog gateway requires one IP address■ Each digital gateway with 8 or fewer T1 spans requires one IPaddress■ Each digital gateway with more than 8 T1 spans requires two IPaddresses■ You must know the appropriate subnetwork mask for the networksegment on which you plan to install the servers.■ You must know the IP address of the network gateway for thenetwork segment on which you plan to install the servers.
