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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
78-19417-01
Chapter 8 Management Network Connectivity
IP Addressing Scenarios
Figure 8-12 Scenario 7: Proxy Server with ENEs on Multiple Rings
Table 8-3 shows the rules the ONS 15310-MA SDH follows to filter packets when Enable Firewall is
enabled.
Table 8-4 shows additional rules that apply if the packet addressed to the ONS 15310-MA SDH is
discarded. Rejected packets are silently discarded.
NOC CTC
station
NOC LAN
97.1.1.x
Interface 0/0
97.1.1.1
Interface 0/1
86.1.1.1
Switch
ONS 15310-MA SDH
GNE
ONS 15310-MA SDH
ENE
ONS 15310-MA SDH
ENE
IP 192.168.0.0/24
Central Office LAN
86.x.x.x
ONS 15310-MA SDH
GNE
ONS 15310-MA SDH
ENE
Local CTC station
IP 10.10.10.10
ONS 15310-MA SDH
ENE
ONS 15310-MA SDH
ENE
IP 192.0.0.0/24
ONS 15310-MA SDH
ENE
271798
Table 8-3 Proxy Server Firewall Filtering Rules
Packets arriving at: Are accepted if the IP destination address is:
15310E-CTX-K9
Ethernet interface
• The ONS 15310-MA SDH shelf itself
• The ONS 15310-MA SDH’s subnet broadcast address
• Within the 224.0.0.0/8 network (reserved network used for standard
multicast messages)
• Subnet mask = 255.255.255.255
DCC interface
• The ONS 15310-MA SDH itself
• Any destination that is connected through another DCC interface
• Within the 224.0.0.0/8 network
