Questions tagged [sdn]
For questions about Software-defined networking (SDN), an approach to networking architecture that separates the control plane from the forwarding plane, with the network control logic implemented in software-based controllers.
106 questions
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Find a mac address in Cisco ACI Fabric
I have a firewall connected to the ACI leaf switch, but I don't know which one and there is no lldp enabled.
I have the mac address of the interface of the firewall and I plan to find the ...
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How is network virtualization useful?
I am trying to understand various virtualization techniques, and I am struggling to wrap my head around the concept of Network Virtualization. I don't have a networking background(mostly programming).
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Difference between SDN and Network Automation
What is the difference between Software-Defined Networking and Network Automation?
If you are managing your routers and switches using tools like Puppet or Ansible, or by using bash scripts or python ...
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Does an SDN Controller need to be connected to every Openflow enabled Switch directly? [closed]
Is it possible that the network would still function if the SDN Controller was only connected to one Openflow Switch and every other Openflow switch would be connected to that switch someway?
And if ...
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[Mininet/Miniedit]: Can't get the host machines connected via a router to ping each other [closed]
As a part of an experiment, my network has the following topology for two host machines connected to a router in mininet(on Ubuntu 22.04.02 Virtual Machine)
h1 - r1 - h2
The host Machine 'h1' ...
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How does a new switch know how to reach the controller in an SDN?
Let's say we have an existing SDN network composed of several switches and a controller. Now say we connected a new switch to the network. Now how would the new switch know how to reach the controller?...
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Software Defined Networking (SDN): What is line-speed?
I can't understand what is meant by line-speed. From a networking point of view, we can say that line-speed is the number of packets transmitted in a unit of time.
I got this term from here:
link of ...
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what is meaning of MPLS when compared to SD-WAN? is it dedicated MPLS or MPLS VPNs
SD-WAN is always compared with MPLS, but it is not clear to me what is the meaning of MPLS in this context. My ambiguity is between these cases.
MPLS VPN services provided and managed by operators ...
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Basic question on 'network history based routing tables'
I have encountered the following sequence of words: 'routing table formed on the basis of network history information'. I know that initially, routers discover neighbor nodes and therby the possible ...
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In an SDN (OpenFlow), are all switches directly connected to controller?
I found this question how openflow messages get routed from switch to controller? (SDN)
And in the answer it says:
In SDN networks all OpenFlow switches are directly connected to controllers.
But if ...
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Monitor network link to get bandwidth and/or latency variations
I have a controlled SDN lab scenario where I have a control plane and a data plane. The network is composed by:
A switch
2 pc connected to the switch for the data plane
A controller pc connected to ...
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SD-WAN edge and physical high-end router
Are physical routers, who have different management interfaces (SNMP, NETCONF, and so on), able to speak to an SD-WAN controller?
In other words, can I have an SD-WAN by establishing a specific SD-WAN ...
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Steps for upgrading to Cisco DNA Center?
Has Anyone upgraded from cisco Prime to Cisco DNAC, if so then Does anyone have Steps (Prep Work) checklist suggestions before beginning the Brownfield Deployment of Cisco DNAC ?
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What exactly is "network automation"?
When we say network automation, what "automation" are we talking about? What is that being automated?
I've heard that in network automation we do not have to configure each individual ...
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SD-Access -only VNIs and SGTs for policy enforcement within the fabric?
I’m currently getting myself up to speed with Cisco SD-Access. Particularly policy enforcement.
Am I right in saying that as SD-Access utilises VNIs and SGTs from which to enforce policies. Then only ...
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