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Configuring a candidate bootstrap router (C-BSR)

PIM-SM cannot run without a bootstrap router (BSR). Although a PIM-SM domain can have only one active BSR, you can configure additional routers as candidate BSRs (C-BSRs). C-BSRs provide backup protection in case the primary BSR fails.

The C-BSR with the highest configured priority becomes the BSR for the domain. If two C-BSRs have equal priority, the candidate with the higher IP address becomes the BSR. If you add a new C-BSR with a higher priority to the domain, it automatically becomes the new BSR.

To configure a C-BSR:

  1. On the device view, select a port.
  2. From the Device Manager menu bar, choose Edit > Port.
    3. The Port dialog box opens with the Interface tab displayed.
  3. Click the PIM tab.
    4. The PIM tab opens.
  4. Click Enable.
  5. Set the CBSRPreference. The C-BSR with the highest BSR-preference and address becomes the active BSR. The default is -1, which indicates that the current interface is not a C-BSR.
  6. Click Apply.

See also:
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