Company XYZ network runs IPv4 and IPv6 and they want to introduce a multidomain, multicast-based network. The new design should use a flavor of PIM that forwards traffic using SPT. Which technology meets this requirement?
Company XYZ network runs IPv4 and IPv6 and they want to introduce a multidomain, multicast-based network. The new design should use a flavor of PIM that forwards traffic using SPT. Which technology meets this requirement?
PIM-SSM (Protocol Independent Multicast - Source Specific Multicast) is the technology that forwards traffic using the Shortest Path Tree (SPT). PIM-SSM is specifically designed for multicast environments where traffic needs to be delivered from specific sources to specific receivers. In PIM-SSM, multicast forwarding is directly from the source to the receiver without relying on a Rendezvous Point (RP), making it an optimal choice for the specified network design requirements.
Answer is B PIM-SM use SPT PIM-SSM use SST
It's B https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16-5/imc-pim-xe-16-5-book/imc-tech-oview.html
PIM-SSM and PIM-DM use only SPT PIM-SM use RPT for first packet and then switch to SPT BIDIR-PIM use only RPT. Answer should be A consider DM is normally not a good idea.
Answer is A: PIM-SSM is specifically designed for IPv6 (as well as IPv4) environments where multicast traffic needs to be delivered from specific sources to specific receivers. PIM-SSM exclusively uses SPTs
should be B
Should be A. PIM source-specific multicast (SSM) uses a subset of PIM sparse mode and IGMP version 3 (IGMPv3) to allow a client to receive multicast traffic directly from the source. PIM SSM uses the PIM sparse-mode functionality to create an SPT between the receiver and the source, but builds the SPT without the help of an RP. IPv6 multicast provides support for intradomain (not interdomain) multicast routing using PIM sparse mode (PIM-SM). PIM-SM uses unicast routing to provide reverse-path information for multicast tree building, but it is not dependent on any particular unicast routing protocol.
Should be A
Sparse mode operation centers around a single unidirectional shared tree whose root node is called the rendezvous point (RP). Sources must register with the RP to get their multicast traffic to flow down the shared tree by way of the RP. This registration process actually triggers a shortest path tree (SPT) Join by the RP toward the source when there are active receivers for the group in the network. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16-5/imc-pim-xe-16-5-book/imc-tech-oview.html
The key use the shared tree SPT to transmit traffic PIM-SSM only use the SPT in the first moment, latter change to SST
The key is “use the shared tree SPT to transmit traffic”. PIM-SSM only use the SPT in the first moment, later PIM-SSM change to SST
I think the key here is multi-domain. I don't know how can you have multi-domain PIM-SSM.