Thanks to all who joined us for the Talari Networks DemoFriday, Tap the Full Potential of Failsafe SD-WAN. During the webinar, Talari Networks demonstrated the latest innovations, product feature updates and UI enhancements to its award-winning SD-WAN platform. After the demo, we took questions from the audience. Below is the full Tap the Full Potential of Failsafe SD-WAN Q&A.
Why do I need continuous, unidirectional measurement of all possible network paths between any pair of locations – can’t I just wait for the roundtrip ping data or use an external probe?
The linchpin technology that enables the delivery of failsafe SD-WANs is the continuous unidirectional measurement of packet loss, latency, jitter and bandwidth utilization for all network paths between any pair of locations. APN performs continuous measurement of each packet on the WAN, as opposed to measurement via occasional round-trip test packets. The measurements are unidirectional, not simply round-trip, since just as on roads and highways, traffic jams are usually in one direction but not the other, and since unidirectional information is essential for real-time traffic. The measurements are done across all paths since given m Internet links at one location and n at the other, there are m x n possible network paths that can be used across the network-of-networks that are the Internet, substantially increasing reliability and QoE.
I always assumed session-level steering was good enough – what are the added benefits to per-packet forwarding decisions, automatic error correction and sub-second response to network events?
This precise, real-time measurement enables unprecedented WAN visibility and subsecond response to adapt to network issues, both hard link/device failures as well as “soft outages” from network congestion-based packet loss and jitter. It is this sub-second response that is the critical component to delivering a truly failsafe SD-WAN. End-to-end algorithms match the state of the network with the needs of different traffic types and adapt using real-time, per-packet traffic engineering. Even though packets can follow any number of paths to the destination, the connection between two locations appears as a single highly reliable link. This delivers predictable IP session performance throughout, regardless of transient congestion or network outages. To TCP/IP-based applications, the resulting WAN connectivity looks like a zero-loss network with occasional bouts of high jitter.
We’re running a lot of VoIP and video conferencing SaaS and cloud apps at the edge – how well do you handle inbound congestion from multiple sources?
For real-time applications like VoIP and video conferencing, Talari’s failsafe SD-WAN technology can deliver ultra-reliable, cost-effective support, choosing network paths with the least packet loss and lowest jitter for such high-priority traffic, and switching subsecond to a better path in the face of high loss or jitter.
“Conduit” is synonymous with a MEF Service, MPLS Pseudowire, etc., correct?
Conduits are essentially failsafe tunnels that can accommodate TRP-packets across multiple paths, flows and nodes, and when required extend into a dynamic mesh.
Can you provide some service chaining examples that Talari supports?
Local service chaining is delivered as a configuration component of the SD-WAN Edge. Additional services (i.e. Advanced Firewall functionality) can be Service Chained with the main SD-WAN functionality. Talari SD-appliances support Service Chaining of internal VNF functionality when additional components (e.g. Advanced Firewall capabilities) are deployed on a Talari SD-WAN Edge appliance. Major Partnerships that are currently integrated with the Talari solutions are as follows:
- Palo Alto – to deliver advanced Security functionality on Edge appliances. Palo Alto VNF is deployed on Talari edge appliance and service chaining is provisioned to activate the SD-WAN – Security functions.
- Zscaler – to deliver Cloud-based security services for Internet traffic. Talari will classify and forward selected data streams to Zscaler services (ZEN) via an encrypted tunnel.