6-5
Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7
OL-16478-03
Chapter 6 Cabling the Line Ports and Completing the Installation
Connecting the Line Ports to the Network
The First Step-Ordering the EC Ports
This section explains how to order the EC ports and assign them to links. This example is the basis for
all following examples.
1. Sort the EC ports in an ascending order by their physical interface numbers. Take the following EC
interfaces as an example:
–
EC1 (subscriber side): 0/1, 0/2, 1/3, 1/5
–
EC2 (network side): 2/2, 3/1, 3/2, 3/4
2. Order the ports in subscriber/network pairs according to their order in the ECs (the first port in EC1
(subscriber side) is paired with the first port in EC2 (network side) and so on):
–
Link 1. S=0/1, N=2/2
–
Link 2. S=0/2, N=3/1
–
Link 3. S=1/3, N=3/2
–
Link 4. S=1/5, N=3/4
Single Router MGSCP Connectivity
Four links would require two Cisco SCE8000 platforms. Connect the ordered pairs, each pair of EC ports
to a pair of Subscriber/Network ports in a Cisco SCE8000 platform:
• Cisco SCE8000 #1: Links 1 and 2
• Cisco SCE8000 #2: Links 3 and 4
The actual connections might look like this:
• S=0/1, Cisco SCE8000 #1 3/0/0
• N=2/2, Cisco SCE8000 #1 3/1/0
• S=0/2, Cisco SCE8000 #1 3/2/0
• N=3/1, Cisco SCE8000 #1 3/3/0
• S=1/3, Cisco SCE8000 #2 3/0/0
• N=3/2, Cisco SCE8000 #2 3/1/0
• S=1/5, Cisco SCE8000 #2 3/2/0
• N=3/4, Cisco SCE8000 #2 3/3/0
Single Router 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 two more ports on each EC to be used as standby ports. In this case, we would use three SCE
platforms, two on the traffic links and one for redundancy, which would be connected to the standby
ports.
If we added ports 0/3 and 2/3 on EC1 and 2/4 and 4/4 on EC2, the ECs would look like this:
• EC1: 0/1, 0/2, 0/3, 1/3, 1/5, 2/3
• EC2: 2/2, 2/4, 3/1, 3/2, 3/4, 4/4
The standby ports must be the two highest-numbered ports:
• EC1 standby ports: 1/5, 2/3
• EC2 standby ports: 3/4, 4/4
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