
Customizing OSPF Multicast Extensions
117355-A Rev. A 5-5
Enabling Deterministic Multicasting
MOSPF runs in two modes: nondeterministic mode and deterministic mode.
• In nondeterministic mode, MOSPF selects paths with the lowest metric cost.
• In deterministic mode, MOSPF uses OSPF quality of service extensions
(called QOSPF) to choose paths that provide the requested QoS.
By default, deterministic MOSPF is disabled. You can use Site Manager to enable
deterministic MOSPF globally.
When you choose MOSPF deterministic mode, you are enabling OSPF with
default values for all QOSPF parameters. You customize QOSPF by modifying
OSPF parameters as described in Chapter 6.
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose Protocols.
The Protocols menu opens.
2. Choose IP. The IP menu opens.
3. Choose OSPF. The OSPF menu opens.
4. Choose Global. The Edit OSPF Global Parameters
window opens.
5. Set the Multicast Deterministic
parameter. Click on Help or see the
parameter description on page A-29.
6. Click on OK. You return to the Configuration Manager
window.
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