Questions tagged [gns3]

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Can't ping / access GNS3 PFSense virtual device but can ping GNS3 VM on same subnet

I have a basic GNS3 network that I’m trying to setup with PFSense. I have managed to install the PFSense module and can now add it as a device within GNS3. However after adding, configuring and ...
SneakyShrike's user avatar
4 votes
1 answer
340 views

Linux: STP does not converge among linux containers

I'm trying to create a lab in GNS3 with docker containers to understand more about spanning-tree. My lab is very simple: there are two Linux/Alpine containers with two links connecting them: -------- ...
José Rios's user avatar
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1 answer
4k views

How do I configure Bird to use OSPF?

I'm configuring a network with the following topology: What I need to do is to provide a service that is available by Anycast and that is announced by OSPF. I managed to configure OSPF on the routers....
Rodrigo Pina's user avatar
-1 votes
1 answer
756 views

Cannot access Ubuntu Server running on VirtualBox and remote machine

I have installed a Ubuntu 20.04.1 Server as VM on a VirtualBox, this VirtualBox is running on my school's remote server and installed GNS3 on this VM(Ubuntu Server). So far, everything is fine. But ...
Tabz's user avatar
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1 answer
2k views

Error: "you need at least 8.6GB disk space to install SecurityOnion, This computer has only 2 GB"

required disk size is more than 8GB But got only 2GB In GNS3 I imported securityonion-16.04.6.1.iso image as new qemu vm, not as existing qemu vm. These is no where an option to change/choose enough ...
reddi hari's user avatar
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0 answers
511 views

KVM host with GNS3 LAB

This is for SDN LAB in the GNS3 with Asterisk. I have KVM physical host in Germany (everyone knows where I guess). I have a GNS3 lab running on Debian VM with some more VMs inside Vbox there. I'm ...
JorgeRaggs's user avatar
1 vote
0 answers
86 views

GNS3 - Connecting Emulalated IOS to TWO PHYSICAL networks

I have a CISCO c3725 router on GNS3 connected to two different and separate unique LANs via the CLOUD/HOST icon, attaching each of the virtual CISCO c3725 to my computer's physical NIC (NIC 1 and NI2.)...
etnemo's user avatar
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1 vote
0 answers
2k views

xinetd service is up but not listening on port 23

I am trying to open a telnet connection from a Wheezy VM to a router in GNS3 but even though the ping is successful, I am unable to open a telnet connection from the VM to any of the routers. the ...
surya's user avatar
  • 151
-1 votes
1 answer
1k views

Connecting two GNS3 setups in two VMs in the same PC

How do i connect these two gns3 setups in different VMs? It's all in the same PC. My end goal would be to ping each VPC to each other. I am already able to ping VPCs in with different VLANs but only ...
Gef's user avatar
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1 vote
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1k views

How to create a link between GNS3 and a VMWare Workstation VM that is totally isolated from the physical host?

My physical host machine runs windows server 2012 R2 with a DHCP server. I have the following topology in GNS3: Windows Server is the physical machine, it is connected to both VMNet 2 and VMNet 3 ...
Chedy2149's user avatar
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2 answers
4k views

Physical Interface VS Multipoint Subinterface in Cisco Frame Relay

I am new in learning about Cisco Frame Relay. And I am having trouble in understanding the difference between using physical interface or multipoint subinterface, because it looks the same to me. ...
randms26's user avatar
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1 answer
262 views

IP SLA: tcpConnect frequency and jitter codec

I am trying to generate different kinds of traffic with IP SLA on a c7200 router, I am using the simulation software GNS, so if required I can change my router. My aim is to generate congestion to ...
Vulpo's user avatar
  • 123
2 votes
0 answers
415 views

Is there a way to automate testing for a GNS3 network topology?

I'm working on an MPLS backbone topology using GNS3, this topology includes configuration of several networking technologies such as IPv6, BGP, OSPF, IPv6 to IPv4 dynamic tunneling, MPLS based VPNs, ...
Chedy2149's user avatar
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1 vote
2 answers
15k views

GNS3 setup connected to real network. ping failure

I am building a lab environment for CCNA training, using GNS3. The GNS3 network is connected to a real network, let's call it LAN 1. LAN 1 is not connected to the internet and is completely wired ...
T. Webster's user avatar
2 votes
1 answer
5k views

connecting to packet tracer from pc

How I can connect to a router that runs in Packet Tracer from the pc that the program (Packet Tracer) runs on it using telnet or Putty or SecureCRT or other shell programs? I use GNS3 but need to work ...
Sam's user avatar
  • 123
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1 answer
531 views

RIP Advertising Networks of EIGRP without Redistributing

This is the topology I have set up in my GNS3. The RIP V2 protocol of Router R2 is recognizing and advertising the two networks that are advertised in EIGRP, even though the said information should ...
gokul varma nk's user avatar
0 votes
1 answer
3k views

GNS3 - Emulating a not supported Cisco router (model 881w)

I want to create a new configuration for a Cisco 881w from scratch. So I want to replicate my environment on GNS3. But I cannot emulate a Cisco 881w (which is the router i have) into it. So I am ...
Jonathan Rioux's user avatar