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Ethernet Card Software Feature and Configuration Guide, R7.2
January 2009
Chapter 17 Configuring Cisco Proprietary Resilient Packet Ring
Add an ML-Series Card into a Cisco Propriet ary RPR
Figure 17-10 Three Node Cisco Proprietary RPR After the Addition
To add an ML-Series card to the Cisco proprietary RPR, you need to complete several general actions:
• Force away any existing non-ML-Series card circuits, such as DS-1, that use the span that will be
deleted.
• Shut down the POS ports on the adjacent ML-Series cards for the STS circuit that will be deleted to
initiate the Cisco proprietary RPR wrap.
• Test Ethernet connectivity between the access ports on the existing adjacent ML-Series cards with
a test set to ensure that the Cisco proprietary RPR wrapped successfully.
• Delete the STS circuit that will be replaced by the new circuits. (In Figure 17-9, this is the circuit
between Adjacent Node 2, POS 0 and Adjacent Node 1, POS 1.)
• Insert the new node into the ring topology if the node is not al ready part of the topology.
• Install the ML-Series card and load your initial configuration file or otherwise do an initial
configuration of the ML-Series card.
• Ensure the new node is configured with Cisco proprietary RPR before its POS ports are manually
enabled or enabled through the configuration file.
• Create an STS circuit from one of the POS ports of an existing adjacent ML-Series card to a POS
port on the new ML-Series card. (In Figure 17-10, this is the circuit between Adjacent Node 2,
POS Port 0 and New Node, POS Port 1.)
• Create a second STS circuit from one of the POS ports of the other existing adjacent ML-Series card
to the remaining POS port on the new ML-Series card. (In Figure 17-10, this is the circuit between
New Node, POS Port 0 and Adjacent Node 1, POS Port 1.)
• Configure the new ML-Series card to join the Cisco proprietary RPR and enable the POS ports, if
the initial configuration file did not already do this.
• Enable the POS ports on the existing adjacent ML-Series cards that connect to the new ML-Series
card. (In Figure 17-10, these are Adjacent Node 1, POS Port 1 and Adjacent Node 2, POS Port 0.)
SPR 1
POS 1 POS 0
POS 0
POS 0
POS 1
POS 1
= STS circuit created on CTC
Adjacent Node 2
Adjacent Node 1
New Node
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