Cisco SCE8000 Installation And Configuration Manual page 81

Chapter 6 Cabling the Line Ports and Completing the Installation
Router 1: N=3/1, Cisco SCE8000 #2 3/1/0
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Router 2: N=3/1, Cisco SCE8000 #2 3/3/0
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Router 1: S=1/3, Cisco SCE8000 #3 3/0/0
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Router 2: S=1/3, Cisco SCE8000 #3 3/2/0
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Router 1: N=3/2, Cisco SCE8000 #3 3/1/0
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Router 2: N=3/2, Cisco SCE8000 #3 3/3/0
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Router 1: S=1/5, Cisco SCE8000 #4 3/0/0
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Router 1: S=1/5, Cisco SCE8000 #4 3/2/0
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Router 1: N=3/4, Cisco SCE8000 #4 3/1/0
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Router 1: N=3/4, Cisco SCE8000 #4 3/3/0
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Dual Routers with N+1 Redundancy MGSCP Connectivity
In order to have N+1 redundancy, we must add one extra SCE platform as the standby platform. We also
must add another port on each EC to be used as standby ports. In this case, we would use five SCE
platforms, four on the traffic links and one for redundancy, which would be connected to the standby
ports.
Again, for the sake of simplicity, we assume that the EC ports are the same on both routers.
If we added ports 0/3 on EC1 and 2/4 on EC2, the ECs would look like this:
EC1: 0/1, 0/2, 0/3, 1/3, 1/5
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EC2: 2/2, 2/4, 3/1, 3/2, 3/4
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The standby ports must be the highest-numbered ports:
• EC1 standby port: 1/5
• EC2 standby port: 3/4
The traffic ports would be assigned to the links as follows:
• Link 1. S=0/1, N=2/2
Link 2. S=0/2, N=2/4
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Link 3. S=0/3, N=3/1
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Link 4. S=1/3, N=3/2
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The standby ports would be assigned to the links as follows:
Link 5 (standby). S=1/5, N=3/4
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If Cisco SCE8000 #5 is the redundant platform, Link 5 from both routers would be connected to it and
the actual connections might look like this:
Router 1: S=0/1, Cisco SCE8000 #1 3/0/0
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Router 2: S=0/1, Cisco SCE8000 #1 3/2/0
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Router 1: N=2/2, Cisco SCE8000 #1 3/1/0
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Router 2: N=2/2, Cisco SCE8000 #1 3/3/0
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Router 1: S=0/2, Cisco SCE8000 #2 3/0/0
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• Router 2: S=0/2, Cisco SCE8000 #2 3/2/0
• Router 1: N=2/4, Cisco SCE8000 #2 3/1/0
OL-16478-03
Connecting the Line Ports to the Network
Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7
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