Figure 4-11 Scenario 7: Ons 15327 Proxy Server With Gne And Enes On The Same Subnet - Cisco ONS 15327 User Documentation

ONS 15327 IP Addressing Scenarios
Figure 4-11
central office LAN and to ENE ONS 15327s. The central office LAN is connected to a NOC LAN, which
has CTC computers. The NOC CTC computer and craft technicians must both be able to access the ONS
15327 ENEs. However, the craft technicians must be prevented from accessing or seeing the NOC or
central office LANs.
In the example, the ONS 15327 GNE is assigned an IP address within the central office LAN and is
physically connected to the LAN through its LAN port. ONS 15327 ENEs are assigned IP addresses that
are outside the central office LAN and given private network IP addresses. If the ONS 15327 ENEs are
co-located, the craft LAN ports could be connected to a hub. However, the hub should have no other
network connections.

Figure 4-11 Scenario 7: ONS 15327 Proxy Server with GNE and ENEs on the same subnet

ONS 15327
External NE
Local CTC station
IP 10.10.10.10
Cisco ONS 15327 User Documentation, R3.3
4-16
shows an ONS 15327 proxy server implementation. A GNE ONS 15327 is connected to a
ONS 15327
External NE
IP 192.168.20.0/24
ONS 15327
External NE
NOC CTC
station
Central Office LAN
86.x.x.x
Interface 0/1
192.168.20.1
ONS 15327
Gateway NE
IP 192.168.20.20
Default gateway
192.168.20.1
Chapter 4 IP Networking
NOC LAN
97.1.1.x
Interface 0/0
97.1.1.1
Interface 0/1
86.1.1.1
Interface 0/0
86.1.1.3
June 2002