How is multicast routing enabled on devices in the Cisco SD-WAN overlay network?
A.
The WAN Edge routers originate multicast service routes to the vSmart controller via OMP, which then forwards joins for requested multicast groups based on IGMP v2 or v3 toward the source or PIM-RP as specified in the original PIM join message.
B.
The WAN Edge routers originate multicast service routes to the vSmart controller via OMP, which then forwards joins for requested multicast groups based on IGMP v1 or v2 toward the source or PIM-RP as specified in the original PIM join message.
C.
The vSmart controller originates multicast service routes to the WAN Edge routers via OMP, which then forwards joins for requested multicast groups based on IGMP v1 or v2 toward the source or PIM-RP as specified in the original PIM join message.
D.
The vSmart controller originates multicast service routes to the WAN Edge routers via OMP, which then forwards joins for requested multicast groups based on IGMP v2 or v3 toward the source or PIM-RP as specified in the original PIM join message.
Correct answer is A
The question specifies "Cisco SD-Wan devices" which support IGMP V2 and V3.
The old Viptela devices only support IGMP V1 and V2.
Cisco bought Viptela and kept the name for a short time, but is phasing it out.
Correct answer is A
IOS XE supports both IGMNPv2 and IGMPv3
Viptela OS "listen" for both IGMPv1 and IGMPv2 group membership reports, but only "supports" IGMPv2 to send join request
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/routing/vEdge-20-x/routing-book/m-multicast-routing.html
Cisco SD-WAN overlay multicast routing supports the Internet Group Management Protocol (IGMP) version 2 (defined in RFC 2236 ). Cisco vEdge devices use IGMP to process receiver membership reports for the hosts in a particular VPN and to determine, for a given group, whether multicast traffic should be forwarded and state should be maintained. vEdge routers listen for both IGMPv1 and IGMPv2 group membership reports.
It's A
From the link...
The Cisco IOS XE SD-WAN multicast overlay software extends Protocol Independent Multicast Source-Specific Multicast (PIM-SSM) over the Cisco SD-WAN overlay using Overlay Management Protocol (OMP). Protocol Independent Multicast Sparse-Mode (PIM-SM) is deployed in the customer VPNs, and the Cisco IOS XE MVPN is used to integrate PIM in customer VPNs and OMP in the overlay. The OMP replicator is used in overlay multicast to optimize the multicast distribution tree across the overlay topology. The Cisco IOS XE SD-WAN router supports IGMPv2 and IGMPv3 reports and advertises receiver's multicast interest to remote Cisco SD-WAN routers using OMP. Depending on the level of optimization required, the Cisco SD-WAN routers join or prune to or from the replicators, and replicators use OMP to relay the join or prune to the Cisco SD-WAN router providing overlay connectivity to the PIM-RP or source.
No it supports IGMP v2 and v3..so answer is A
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/routing/ios-xe-17/routing-book-xe/m-multicast-routing.html
upvoted 3 times
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