Intelligent Networks Flashcards
What are the features of Stack Wise?
Joins multiple switches into one logical switch
Managed as a single unit
Has on IP address
One configuration file
What service deploys a computer system, or network of systems, from which computing resources are offered to remote users.
cloud
What are the advantages to the cloud service provider?
Cost reduction from standardization
High utilization through virtualized, shared resources
Easier administration
Fail-in-place operations model
What are the advantages to cloud users?
On demand, self-service resource provisioning
Centralized appearance of resources
Highly available
No local backups
What service model provides the network only and delivers computer infrastructure (platform virtualization environment)?
Infrastructure as a Service (IaaS)
What service provides the operating system and the network and delivers a computing platform and solution stack?
Platform as a Service (Paas)
What service provides the required software, operating system, and network by providing ready to use applications or software?
Software as a Service (SaaS)
What are the three service models that exist from a cloud?
IaaS
Paas
SaaS
What plane is responsible for forwarding frames or packets?
data
What plane is responsible for controlling the forwarding tables that the data plane uses?
control
What changes the networking paradigm by removing “intelligence” from individual devices and transferring it to a central controller and enabling management of networks through software?
SDN (Software-defined networking)
Using _____, business applications tell the SDN controller what they need from the network. Then the controller uses these to pass instructions to network devices, such as routers and switches.
API (Application programming interfaces)
The controller uses _____ API to control individual devices and provide an abstracted network view to upstream applications that use a _____ API.
southbound
northbound
What separates the control plane from the forwarding (data) plane?
SDN
_____ speeds up deployment of new services and reduces cost by virtualizing network devices that were previously sold only as a separate box and by enabling them to run on any server.
NFV (Network Function Virtualization)
Contains network elements (any physical or virtual device that deals with customer traffic)
Data plane
Offers a centralized view of the network, giving the controller the ability to act as the brain of the network
SDN
Represents the core layer of the SDN architecture. It contains SDN controllers, which provide centralized control of the devices in the data plane.
Control plane
Contains SDN applications that communicate their network requirements toward the controller.
Application plane
The SDN controller uses ____ to communicate with the application and data plane.
APIs
Communication with the data plane is defined with _____ interfaces, while services are offered to the application plane using the _____ interface.
southbound
northbound
Configures the flow tables in switches
OpenFlow
Configures devices with XML, transactional.
NETCONF
Describes an industry standard API, which ONF (Open Networking Foundation) defines. It configures white label switches and, as a result, defines the flow path through the network. The actual configuration of the devices is accomplished with the use of NETCONF.
OpenFlow
It is a network management protocol that the IETF standardized. It provides mechanisms to install, manipulate, and delete the configuration of network devices via RPC mechanisms. The messages are encoded by using XML.
NETCONF
An open-standard protocol that provides a distributed control system that is based on a declarative policy information model.
OpFlex
_____ is a protocol that allows you to modify the configuration of a networking device, whereas _____ is a protocol that allows you to modify its forwarding table.
NETCONF
OpenFlow
What interfaces are responsible for the communication between the SDN controller and the services that run over the network.
Northbound
Allows you to use open programmability APIs for policy-based management and security through a single controller and provides you with abstraction of the network, further simplifying the management of network services.
Cisco APIC-EM (Cisco Application Policy Infrastructure Controller Enterprise Module)
What are some of the benefits of APIC-EM
Consistency
Automation
Open and programmable
Support greenfield and brownfield deployments
What feature of APIC-EM scans the network and provides the inventory, including all network devices?
Network Information Database
What feature of APIC-EM helps you discover a new network device, and creates a network information database entry for it and then automatically configures it?
Zero-touch deployment
What feature of APIC-EM helps you discover and map network devices to a physical topology with detailed-level data (including the discovered hosts)
Network topology visualization
What feature of APIC-EM can track user identities and endpoints by exchanging the information with the Cisco Identity Service Engine (Cisco ISE)
Identity Manager
What feature of APIC-EM translates a business policy into a network device-level policy. It can enforce the policy for a specific user at various times of the day, across wired and wireless networks.
Policy Manager
What feature of APIC-EM accelerates ACL management by querying and analyzing ACLs on each network device. It can quickly identify ACL misconfiguration.
ACL analysis
What feature of APIC-EM allows you to quickly set and enforce QoS priority policies.
QoS deployment and change management
What feature of APIC-EM simplifies the provisioning of IWAN network profiles with simple business policies?
Cisco Intelligent WAN (IWAN)
What SDN architecture layer does Cisco APIC-EM fit in?
control
What solution gives you a way to take advantage of cheaper bandwidth at branch locations, without compromising application performance, availability, or security
Cisco IWAN
What are the four components of IWAN?
Transport-dependent connectivity
Intelligent path control
Application optimization
Secure connectivity