IP Network Addressing Scenarios
E-53163-A2-GB20-10 March 1999
Scenario 4

An alternative addressing scheme, for the network is

shown in Figure E-4. This example uses a subnet mask of

FF.FF.00.00 for the COM port in the central-site carrier

(only), with all of the remaining subnet masks set to

FF.FF.FF.00. The advantage to this scheme is that only

one route must be added to the NMS host (135.18.0.0).

ETHERNET
135.19.6.34
496-14648-02
LAN
ADAPTER
T1
COMSPHERE 3610
COMSPHERE 3610
135.19.6.22

135.19.6.1 . . . . 135.19.6.16

135.18.40.1
COM IP
ADDRESS:
135.18.40.4
SUBNET 135.18.40.0
SUBNET 135.19.0.0
T1
COMSPHERE 3000
135.19.20.45
COMSPHERE 3610
COMSPHERE 3610
135.19.20.23

135.19.20.1 . . . . 135.19.20.16

COMSPHERE 3000
T1
T1

135.19.1.1 . . . . 135.19.1.16

COMSPHERE 3000
T1
T1
COM
SUBNET MASK:
FF:FF:00:00

Figure E-4. Local Carrier Connected to Remote Carriers – an Alternative