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Implementing Cisco Service Provider Advanced Routing Solutions (SPRI) Questions 61–65 (page: 14)

Updated On: 10-Feb-2026

You have configured MSDP peering between two autonomous systems that pass traffic between two sites, but the peering has failed to come up.
Which task do you perform to begin troubleshooting the problem?

  1. Verify that multicast has been disabled globally
  2. Verify that PIM-DM is configured on the source interface
  3. Verify that both source interfaces are reachable from both peers
  4. Verify that the two MSDP peers allow asymmetric routing

Answer(s): C



Which feature is used in multicast routing to prevent loops?

  1. STP
  2. inverse ARP
  3. RPF
  4. split horizon

Answer(s): C



Refer to the exhibit.


A service provider technician is working on a multicast issue for a customer. Whilechecking the multicast table, the technician notices that no flags are present for the (1.1.1.1, 239.1.1.1) entry, yet flags are present for the (1.1.1.1, 232.1.1.1) entry.
Which factor might explain this issue?

  1. Only the administratively scoped range is permitted
  2. Only ASM is permitted
  3. Only the default SSM range is permitted
  4. Only GLOP is permitted

Answer(s): C



Which two statements about mapping multicast IP addresses to MAC addresses are true? (Choose two.)

  1. All mapped multicast MAC addresses begin with 0x0100.5E
  2. The router performs the mapping before it hands the packet off to a switch
  3. All multicast MAC addresses end with 0x0100.5E
  4. The mapping process may generate overlapping addresses, which can cause receivers to receive
  5. All destination MAC addresses begin with an octet of binary 1s

Answer(s): A,D



Refer to the exhibit.


Which task must you perform on interface g1/0/0 to complete the SSM implementation?

  1. configure OSPFv3
  2. enable CDP
  3. disable IGMP
  4. configure IGMPv3

Answer(s): D


Reference:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16/imc-pim-xe-16-book/imc-ssm.html



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