4-3
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 4 IP Networking
Scenario 1: CTC and ONS 15454 SDHs on Same Subnet
4.2 Scenario 1: CTC and ONS 15454 SDHs on Same Subnet
Scenario 1 shows a basic ONS 15454 SDH LAN configuration (Figure 4-1). The ONS 15454 SDHs and
CTC computer reside on the same subnet. All ONS 15454 SDHs connect to LAN A, and all ONS 15454
SDHs have DCC connections.
Note Instructions for creating DCC connections are provided in Chapter 5, “SDH Topologies” within the
MS-SPRing, SNCP, and linear ADM procedures.
Figure 4-1 Scenario 1: CTC and ONS 15454 SDHs on same subnet
4.3 Scenario 2: CTC and ONS 15454 SDHs Connected to Router
In Scenario 2 the CTC computer resides on a subnet (192.168.1.0) and attaches to LAN A (Figure 4-2).
The ONS 15454 SDHs reside on a different subnet (192.168.2.0) and attach to LAN B. A router connects
LAN A to LAN B. The IP address of router interface A is set to LAN A (192.168.1.1), and the IP address
of router interface B is set to LAN B (192.168.2.1).
On the CTC computer, the default gateway is set to router interface A. If the LAN uses DHCP (Dynamic
Host Configuration Protocol), the default gateway and IP address are assigned automatically. In the
Figure 4-2 example, a DHCP server is not available.
CTC Workstation
IP Address 192.168.1.100
Subnet Mask 255.255.255.0
Default Gateway = N/A
Host Routes = N/A
ONS 15454 SDH #1
IP Address 192.168.1.10
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
ONS 15454 SDH #2
IP Address 192.168.1.20
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
ONS 15454 SDH #3
IP Address 192.168.1.30
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
LAN A
SDH RING
71295
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