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## 8.8 Assign an STP role to the CPC 

You can assign an STP role to the CPC in the CTN. PTS must exist, but BTS and Arbiter roles are optional. However, it is a good idea to assign BTS and Arbiter based on your CTN configuration. In this scenario, we assign the Arbiter role to MUSCA, which does not include an STP role (see Figure 8-60). 

## 8.8.1 HMC operations to assign or modify STP Role 

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To assign or modify STP role, complete the following steps: 

1. Open the Manage System Time task from the HMC that can operate CTN changes to modify the STP roles. Select Modify assigned server roles  from the STP ACTIONS list (see Figure 8-61). 

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