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F. IP Network Addressing Scenarios
3160-A2-GB21-90 February 2001
F-5
Scenario 4
An alternative addressing scheme, for the network is shown in Figure F-4, Local
Carrier Connected to Remote Carriers – an Alternative. 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).
Figure F-4. Local Carrier Connected to Remote Carriers – an Alternative
ETHERNET
135.19.6.34
496-14648-02
LAN
ADAPTER
T1
C
O
M
S
P
H
E
R
E
3
6
1
0
C
O
M
S
P
H
E
R
E
3
6
1
0
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
C
O
M
S
P
H
E
R
E
3
0
0
0
135.19.20.45
C
O
M
S
P
H
E
R
E
3
6
1
0
C
O
M
S
P
H
E
R
E
3
6
1
0
135.19.20.23
135.19.20.1 . . . . 135.19.20.16
C
O
M
S
P
H
E
R
E
3
0
0
0
T1
T1
135.19.1.1 . . . . 135.19.1.16
C
O
M
S
P
H
E
R
E
3
0
0
0
T1
T1
COM
SUBNET MASK:
FF:FF:00:00