What is Cisco BFD?
BFD is a detection protocol designed to provide fast forward path error detection times for all media types, encapsulations, topologies, and routing protocols. In addition to fast forward path error detection, BFD provides a consistent error detection method for network administrators.
What is Multi-Hop BFD?
Multi-hop BFD provides sub-second forward error detection for a destination with more than one hop and up to 255 hops. A multi-hop BFD session is established between a single source-destination address pair provided by the customer. A session can be established between two endpoints with IP connectivity.
What is a BFD Session?
Bidirectional Forwarding Detection (BFD) is a network protocol used to detect failures between two forwarding modules connected by a link. BFD establishes a session between two endpoints over a specified connection.
What does the BFD value of 8 mean?
The BFD diag field can be used to identify a BFD packet as a hierarchical BFD packet. Since diag field values 0-7 are already in use, a diag field value of 8 can identify that the packet is a hierarchical BFD packet.
How does BFD work?
BFD provides a method to validate the operation of the forwarding layer between two routers. Triggers an action in a routing protocol (disconnecting a session or neighbor) when an error is detected. In both modes, BFD provides an echo function, where one side can ask its neighbor to loop back a series of packets.
What is Viptela BFD Session?
Bidirectional Forwarding Detection (BFD) is a protocol that detects link failures as part of the Cisco SD-WAN High Availability Solution (Viptela), is enabled by default on all vEdge routers and cannot be disabled.
What is OMP Viptela?
OMP is the control protocol used to exchange routing, policy, and management information between vSmart controllers and vEdge routers on the overlay network. It is enabled by default, so there is no need to explicitly configure or enable OMP after the vSmart controllers and vEdge routers are booted.
What are the three options that are always enforced regarding data plane traffic in an SD-WAN solution?
These three components (authentication, encryption, and integrity) are essential to secure the Cisco SD-WAN overlay network infrastructure.
What is the scope of localized policy?
Policy localization is the adaptation of the policy to the needs of the business units to allow for changes related to local laws and regulations. When creating a policy, we also document who is in scope. Define which organization is subject to this policy.
What is TLOC Extension?
TLOC Extension is a feature that allows a WAN Edge Router to communicate over the WAN Transport connected to the adjacent WAN Edge Router via a TLOC Extension interface. On the other hand, vEdge-2 is connected to the MPLS cloud and uses the TLOC Extension feature to connect to the Internet via WAN Edge 1.
What does SD-WAN architecture need to authenticate an edge device?
SD-WAN controllers (vBond, vManage, and vSmart) and WAN edge devices must authenticate and trust each other before establishing secure control connections. When SD-WAN controllers authenticate each other and WAN edge devices, they perform the following actions: Validate the root of trust for the certificate’s root CA.
What is TLOC in SD-WAN?
A TLOC is a transport locator that represents a connection point where a Cisco WAN Edge device connects to a WAN transport. System IP: The system IP address is the unique identifier of the WAN edge device in the SD-WAN framework. It is similar to the router ID in traditional routing protocols such as BGP.
What are two methods that can be used to create device models?
You can create two types of device templates in Junos Space Platform: Configuration Template – A configuration template is a template created using a template definition. You first create a template definition and specify the general configuration that can be deployed to a device.
What is Cisco vManage?
Use the Cisco vManage dashboard screens (Primary, VPN, Ad Security) to monitor the overall health and security of the Cisco SD-WAN overlay network at a glance. Cisco vManage application server logo. Cloud onRamp Icon – Allows the Cloud onRamp service to streamline access to cloud applications.
What are OMP courses?
The Viptela Overlay Management Protocol (OMP) creates and manages the Viptela control plane. OMP is enabled by default on all vEdge routers, vManage NMSs, and vSmart controllers, so there is no need to explicitly configure or enable OMP. OMP must be operational for the Viptela overlay network to work.
Which VPN is used to access the overlay network?
VPN 512 – Management VPN that routes out-of-band network management traffic between Viptela devices on the overlay network.
What is Cisco’s recommendation for the number of transport interfaces on a vSmart controller?
On vManage and vSmart you can only have 1 transport interface and on vEdge devices you can have up to 7 transport interfaces.
What is sdwan overlay?
SD-WAN does this by separating applications from underlying network services with a policy-based virtual overlay. This overlay monitors the performance characteristics of the underlying networks in real time and selects the optimal network for each application based on configuration guidelines.
What is Cisco vSmart?
The vSmart Controller is a virtual appliance that resides in a public or private cloud (on-premises). It provides the control plane of the network fabric, facilitates data plane encryption between WAN edges, and propagates centralized policies that configure and control the fabric.
What is vBond Cisco?
vBond – starts the boot process of each vEdge device, in the first step creates a secure tunnel with vEdge and informs vSmart and vManage about its parameters such as IP address. Depending on the chosen topology, it establishes secure IPSec tunnels with other vEdges.
Which Cisco routers support SD-WAN?
Cisco SD-WAN software is included with every router and vEdge platform and runs on select Cisco 1000 and 4000 Series ISRs, Catalyst 8300 Series Routers, Catalyst 8500 Routers, ASR 1000 Series Routers, ISRv on ENCS 5000 series and Catalyst 8000V or CSR 1000V to be activated on the Cloud Services Platform 5000 Series…