300-415 · Question #355
What is a key element used in a vBond Orchestrator redundancy topology?
The correct answer is C. fully qualified domain name. In a vBond Orchestrator redundancy topology, a Fully Qualified Domain Name (FQDN) is the key element that allows multiple vBond instances to be referenced by a single resolvable name for high availability.
Question
Options
- Aload-balancer with health probes
- BDHCP server
- Cfully qualified domain name
- Dstun server
How the community answered
(42 responses)- B2% (1)
- C95% (40)
- D2% (1)
Why each option
In a vBond Orchestrator redundancy topology, a Fully Qualified Domain Name (FQDN) is the key element that allows multiple vBond instances to be referenced by a single resolvable name for high availability.
A load balancer with health probes is not a standard or required element in Cisco SD-WAN vBond redundancy; DNS-based resolution via FQDN serves this purpose natively.
A DHCP server is used for dynamic IP address assignment and is not a key element of the vBond orchestrator redundancy topology.
An FQDN represents the vBond orchestrator in a redundant deployment, where the DNS name resolves to multiple vBond IP addresses. WAN Edge devices and vManage use this FQDN to discover vBond, and DNS can return any of the available vBond IPs, providing load distribution and failover without reconfiguring edge devices.
A STUN server is a function that vBond itself provides for NAT traversal, but it is not the key element that enables vBond redundancy across multiple controller instances.
Concept tested: vBond Orchestrator redundancy using FQDN
Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/system-interface/vedge-20-x/systems-interfaces-book/system-interface.html
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