Cisco ONS 15454 DWDM - DCN Case Study 2: Linear Topology with DCN Connections on both Ends

15-28
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 15 Management Network Connectivity
15.3.5 DCN Case Study 2: Linear Topology with DCN Connections on Both Ends
15.3.5 DCN Case Study 2: Linear Topology with DCN Connections on Both Ends
DCN Case Study 2, shown in Figure 15-19, shows a four-node linear topology with DCN connectivity
at both ends.
Figure 15-19 DCN Case Study 2: ONS 15454 Linear Topology with DCN Connections at Both Ends
To maintain DCN resilience, static routes are used and a GRE tunnel is created between Router 1 and
Router 2 over the DCC/OSC/GCC optical link. In this example, all ONS 15454s are part of the same
subnet. Therefore, the Router 1 and Router 2 static route tables have more entries because alternate paths
must be configured for every host.
15.3.5.1 DCN Case Study 2 IP Configurations
The following sections provide sample IP configurations at routers and ONS 15454 nodes in
DCN Case Study 2.
15.3.5.1.1 NOC Router IP Configuration
Interface configuration:
interface Ethernet0/0
ip address 10.58.46.121 255.255.255.192
no ip directed-broadcast
!
interface Ethernet1/0
ip address 192.168.20.1 255.255.255.0
no ip directed-broadcast
!
interface Ethernet2/0
ip address 192.168.10.1 255.255.255.0
no ip directed-broadcast
!
159497
Router 1 Router 2
.1 .2
.1 .1
.121
.2 .2
192.168.10.0/24
NOC router
NMS
.113
NOC LAN
10.58.46.64/26
192.168.20.0/24
Node 1
.80
Node 2
.79
Node 3
.78
Node 4
.77