Cisco ONS 15454 SDH Specifications Page 172

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4-4
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 4 IP Networking
Scenario 3: Using Proxy ARP to Enable an ONS 15454 SDH Gateway
Figure 4-2 Scenario 2: CTC and ONS 15454 SDHs connected to router
4.4 Scenario 3: Using Proxy ARP to Enable an ONS 15454 SDH
Gateway
Scenario 3 is similar to Scenario 1, but only one ONS 15454 SDH (node #1) connects to the LAN
(Figure 4-3). Two ONS 15454 SDHs (#2 and #3) connect to ONS 15454 SDH #1 through the SDH DCC.
Because all three ONS 15454 SDHs are on the same subnet, Proxy ARP enables ONS 15454 SDH #1 to
serve as a gateway for ONS 15454 SDHs #2 and #3.
CTC Workstation
IP Address 192.168.1.100
Subnet Mask 255.255.255.0
Default Gateway = 192.168.1.1
Host Routes = N/A
Router
IP Address of interface “A” to LAN A 192.168.1.1
IP Address of interface “B” to LAN B 192.168.2.1
Subnet Mask 255.255.255.0
ONS 15454 SDH #2
IP Address 192.168.3.20
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
ONS 15454 SDH #1
IP Address 192.168.2.10
Subnet Mask 255.255.255.0
Default Router = 192.168.2.1
Static Routes = N/A
ONS 15454 SDH #3
IP Address 192.168.4.30
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
LAN B
LAN A
Int "A"
Int "B"
SDH RING
71296
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