Figure 4-13 Scenario 7: Ons 15327 Proxy Server With Enes On Multiple Rings; Table 4-3 Proxy Server Firewall Filtering Rules - Cisco ONS 15327 User Documentation

ONS 15327 IP Addressing Scenarios

Figure 4-13 Scenario 7: ONS 15327 Proxy Server with ENEs on multiple rings

ONS 15327
External NE
ONS 15327
External NE
ONS 15327
External NE
ONS 15327
External NE
ONS 15327
External NE
Local CTC station
IP 10.10.10.10
Table 4-3
the packet is addressed to the ONS 15327, additional rules, shown in
packets are silently discarded.
Table 4-3
Packets Arrive At
XTC Ethernet
Interface
DCC Interface
Cisco ONS 15327 User Documentation, R3.3
4-18
IP 192.168.0.0/24
IP 192.0..0.0/24
ONS 15327
External NE
shows the rules the ONS 15327 follows to filter packets when Enable Firewall is enabled. If
Proxy Server Firewall Filtering Rules
Accepted
The ONS 15327 itself
•
• The ONS 15327's subnet broadcast address
• Within the 224.0.0.0/8 network (reserved network used for standard multicast
messages)
255.255.255.255
•
The ONS 15327 itself
•
An OSPF peer (another DCC-connected ONS 15327)
•
Within the 224.0.0.0/8 network
•
NOC CTC
station
Central Office LAN
86.x.x.x
ONS 15327
Gateway NE
ONS 15327
Gateway NE
Chapter 4 IP Networking
NOC LAN
97.1.1.x
Interface 0/0
97.1.1.1
Interface 0/1
86.1.1.1
Switch
Table 4-4, are applied. Rejected
June 2002