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Questions tagged [virtual]

For questions about virtual interfaces on network devices. For instance, you want to bridge two interfaces on a router and want them to be in the same Layer-2 broadcast domain. In this scenario, Bridge Virtual Interface (BVI) or Bridge Domain Interface (BDI) interfaces would act as the routed interface for those two bridged physical interfaces.

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3answers
44 views

Correct term for networks created for virtual machines and containers?

What is the correct term for the type of network created for virtual machines and for containers. For illustration a Linux virtual host might have devices docker0 as 02:42:a6:79:a6:bc with address 172....
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1answer
51 views

Physical device in subnet of virtual networks [closed]

I was wondering if it's possible to connect a physical Raspberry to a NUC running several virtual machines on an ESXi environment. The network is setup as follows: I want my physical device to be '...
2
votes
1answer
33 views

VyOS: Failure to commit after L2TPv3 configuration

I am trying to get familiar with VyOS (using a VM) and while working on L2TPv3 I encountered something strange: after configuring the L2TPv3 interface and try to commit, an error occurs as if the ...
0
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1answer
33 views

How to connect separate physical devices to same virtual network in VMWARE [closed]

I am trying to create a vitual active directory network at home. I am trying to do this in VMWare. I have 2 actual physical computers. Here is the plan: 1st Physical Machine: Using vmware create the ...
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1answer
32 views

How cable connects to server if routers and switches are virtualized

Looking here for an example, I see: Spine Device Interface Summary As previously stated, the validated design includes up to 4 spine devices and up to 96 leaf devices that are interconnected by ...
0
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1answer
65 views

If physical switches are necessary in a SDN

Exploring how to implement a Software Defined Network and here it explains that an SDN switch is only dealing with the data layer. But then: Do We Need Special SDN Switches for SDN Networking? ...
0
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1answer
15 views

If Network Operating Systems or Virtualized Networks are installed on regular computers [closed]

I am learning about SDN and Network Operating Systems and Virtual Networks. I am confused about where the actual code that runs exists. Like when you have an application like a website, it runs on a ...
2
votes
3answers
694 views

Virtual Appliance - Cisco Router

My colleague said that it is possible to virtualize a Cisco router i.e. run the Cisco IOS inside ESXi and it would act like a real cisco router so thus can be used in a light production environment. ...
1
vote
1answer
104 views

Are there any Virtual Switch concepts besides vLAN, Virtual Switch, Virtual Distributed Switch, and Logical Switch?

While self-studying for a VMware Associate Certificate I'd see the phrase "Logical Switch" pop up from time to time, at first I figured it was a synonym for a virtual switch. Then I ran into a ...
1
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2answers
244 views

Physical / Virtual Interfaces.

Well, I know that's a simple question for the level of this forum, but yet, I didn't found anything on Google, at least not what I want. I'm studying for CCNA R&S and I just learned about ...
1
vote
1answer
601 views

Packet-Tracer multiple IPs for a PC

I searched for a way to configure a PC with multiple IP addresses in Packet Tracer but i found nothing. I read that you can use the command netsh on Windows to create virtual interfaces. I've tried to ...
0
votes
1answer
501 views

What could cause kvm virtualized pfsense to get 84mbps behind physical pfsense, but then drop to 1mbps when it replaces physical pfsense?

I'm scratching my head on what could cause the following behavior: Scenario A: Laptop -> virtualizedpfsense -> switch -> physicalpfsense -> modem speedtest.com gives me 84mbps download (...
1
vote
1answer
478 views

What exactly is a 'virtual WiFi access point'?

Recently I've come across the notion of 'virtual WiFi AP'. For concrete examples of references to this notion, refer to these pointers: 1,2,3. I'm a bit confused about what virtual APs actually are. ...
1
vote
2answers
576 views

Virtual Circuit Identifier

In a Virtual Circuit Network how does a packet gets a VCI ? I read in Data Communication and Networking book by B.A.Forouzan that a packet with a VCI comes at a switch but there is no mention on how ...
0
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3answers
96 views

What does a switch have to do?

I'm thinking of something that would need to emulate an ethernet switch. We have a proprietary bus connecting a central unit with several "slave units", and I would like to move ethernet packets over ...
1
vote
2answers
51 views

Can i use an actual network management application and connect it to a router inside GNS3?

I want to connect a NMS to a router on GNS if it's possible, so that i can practice the "actual thing".
2
votes
1answer
165 views

Virtual Bridges do not seem to be carrying LLDP information

Network community, I am testing a Juniper virtual-SRX (D.70). When configured on a desktop the vSRX works wonderfully (fully functional/connected OSPF router), however when I plug it into the rest ...
3
votes
1answer
214 views

Traffic shaping on juniper virtual-router

I have created a virtual routing instance allow traffic to be transmitted over private IP space: static-cust-inet { description "Virtual Routing Instance"; instance-type virtual-router; ...
2
votes
1answer
56 views

Regarding Virtual Managed Services Solution vs Traditional Hardware approach

Not sure if this is is the right place to ask, but i will still go ahead.I have been reading up on Cisco's VMS solution and i see that the main stress is laid on the fact that things which were done ...
2
votes
2answers
295 views

How do you disable IGMP-snooping on virtual nic macvtap

Networking community, Question: How do you disable IGMP-snooping on virtual nic macvtap? Background: We have noticed that Juniper vSRX 15.1X49-D60 (Running on Ubuntu 16.04LTS Server KVM) is ...
1
vote
3answers
79 views

How is Service chaining different from network functions virtualization?

From what i understand, both focus on replacing the traditionally implemented proprietary hardware services such as firewalls , NAT ,etc and try to implement it in software. So how do the two differ ...
0
votes
1answer
752 views

Spoof MAC address of VLAN interface on IOS

Is there a way to change the MAC address of VLAN interfaces (switched virtual interfaces) on IOS? I would like to configure the MAC address of a Catalyst switch. Because all VLAN interfaces derive ...
0
votes
1answer
32 views

Lots of Small Requests over Broadband Connection - Slow Response Times? [closed]

I have setup my dual e5-2697 V2 system; using VMWARE WorkStation Pro 12, to run roughly 30 VMs concurrently. While the machines do a lot of "small requests", ping type requests, nothing more then ...
5
votes
1answer
9k views

Difference between Linux Bridge and Open vSwitch

What are the most significant differences between how a Linux bridge and an Open vSwitch work?
2
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2answers
714 views

Communication between VDCs on Cisco Nexus 7000 via virtual interface

Is there any way to create a virtual interface of sorts between two VDCs on a single Nexus 7000 switch? I've read that a physical cable is required (which is lame) however I wasn't sure if this was a ...
4
votes
2answers
2k views

Why does a switch have more VTY lines than a router?

During my years working with Cisco equipment I realised that switches have more VTY lines (16) as compared to routers which have 5 VTY lines considering that the equipment that we work with (c2960 ...
0
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1answer
638 views

Routing to a virtual machine through a VPN [closed]

I'm not sure if this belongs here or to Server Fault... but gotta start somewhere... I'm running a Win2008R2 server on VirtualBox. This server has an SNMP application. I'm trying to make this ...