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IP Network Addressing Scenario
F-4
3162-A2-GB20-40August 2000
Local and Remote Carriers — Different Subnets
This third scenario (Figure F-3) shows a local carrier connected to remote
carriers that have remote standalones. Each carrier must be on a separate
subnet but, as in the previous scenario, the carrier-remote combination can share
a common subnet. Once again, the subnet mask is 255.255.255.00 for all
devices. A static route must be set up in the NMS host for each subnet:
135.18.4.0, 135.18.6.0, 135.18.20.0.
ETHERNET
135.18.6.34
LAN
ADAPTER
T1
CO
MSPH
ERE 3610
COM
SPHE
RE 3610
135.18.6.22
135.18.6.1 . . . . 135.18.6.16
135.18.40.1
COM IP
ADDRESS:
135.18.40.4
SUBNET 135.18.40.0
SUBNET 135.18.6.0
T1
C
O
M
S
P
H
E
R
E
3
0
0
0
135.18.20.45
CO
MS
PHERE
3610
CO
MSPH
ERE 3610
135.18.20.23
135.18.20.1 . . . . 135.18.20.16
SUBNET 135.18.20.0
C
O
M
S
P
H
E
R
E
3
0
0
0
T1
T1
135.18.4.1 . . . . 135.18.4.16
C
O
M
S
P
H
E
R
E
3
0
0
0
SUBNET 135.18.4.0
T1
T1
Figure F-3. Local Carrier Connected to Remote Carriers