MOSPF vs OSPF: Source and Destination Impact

In summary, the RFC about MOSPF states that there is a difference between this algorithm and its "unicast version" OSPF. While in MOSPF, both the source and destination are important, in OSPF, only the destination is fundamental. This statement may seem contradictory since the source is the starting point of the shortest path in both cases, but it is important to note that in multicast routing, each node forms a unique distribution tree based on the source node, to avoid loops.
  • #1
kususe
22
0
In the Rfc about MOSPF, is declared that one difference between this alghortim an his "unicast version" OSPF that, while in the former what is important is both the source and the destination, in OSPF what is fundamental is just the destination.
Why this statement, if in both case source is the initial point where shortest path begins?
Thanks in advance.
 
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  • #2
kususe said:
In the Rfc about MOSPF, is declared that one difference between this alghortim an his "unicast version" OSPF that, while in the former what is important is both the source and the destination, in OSPF what is fundamental is just the destination.
Why this statement, if in both case source is the initial point where shortest path begins?
Thanks in advance.

Honestly I think you are better off finding a Cisco/Network forum as this question is fairly technical.
 
  • #3
In multicast routing each node has to form a distribution tree based on the source node. The tree is unique to each source node, so that a node receiving a multicast packet knows exactly which all node have received the packet and exactly where to forward the packet. Or loops could form.
 

Related to MOSPF vs OSPF: Source and Destination Impact

1. What is the difference between MOSPF and OSPF?

MOSPF (Multicast Open Shortest Path First) and OSPF (Open Shortest Path First) are both routing protocols used in computer networks. The main difference between the two is that MOSPF is specifically designed for multicast traffic, while OSPF is used for unicast traffic.

2. How does MOSPF handle source and destination impact?

MOSPF uses a shared tree approach for multicast traffic, where a single path is used for all sources to reach a destination. This means that the source and destination do not have a significant impact on the routing process.

3. How does OSPF handle source and destination impact?

OSPF uses a shortest path first approach for unicast traffic, where each source and destination pair is assigned a unique path. This means that the source and destination have a significant impact on the routing process.

4. Which protocol is more efficient for multicast traffic: MOSPF or OSPF?

MOSPF is more efficient for multicast traffic because it uses a shared tree approach, which reduces the amount of traffic and processing required compared to OSPF's shortest path first approach.

5. Can MOSPF and OSPF be used together in a network?

Yes, MOSPF and OSPF can be used together in a network. However, they would need to be configured and managed separately, as they are designed for different types of traffic. MOSPF would handle multicast traffic, while OSPF would handle unicast traffic.

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