Questions tagged [lab]

For questions about network labs, where it is a technique whereby a software program models the behavior of a network by calculating the interaction between the different network entities (routers, switches, nodes, access points, links etc.). For instance, Packet tracer or GNS3.

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31 views

Cisco FMC stuck on boot menu screen on eve-ng

Any time I restart Cisco FMC on eve-ng, it doesn't boot the default image. When I connect via VNC and press enter or type the image version to boot, it doesn't respond to laptop keystrokes . I was ...
3
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1answer
69 views

BGP | Advertise a summary prefix out to customer location

I don't know what I should be using for this or how I should go about it. In my lab where I am testing out the BGP configs that I've learned I want my ISP topology to have a summary prefix for the ...
5
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1answer
155 views

Is it possible to set up a DSL lab environment?

I'm trying to figure out if I can setup a DSL lab for training purposes. If I have a switch or laptop running a PPPOE server, could I go from ethernet-to-modem then connect the modem's WAN port to ...
0
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1answer
215 views

Virtual switch with port mirroring [closed]

I have a lab in which I have three computers connected to a switch. two of the switch's ports are mirrored to a third port so that all the communication between the two computers is mirrored to the ...
3
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3answers
585 views

Can we run Linux guest OS in Cisco Packet Tracer?

I've been using VirtualBox, and GNS3 for a while and recently I found out about Cisco Packet Tracer. https://en.wikipedia.org/wiki/Packet_Tracer I've downloaded it and it seems like this tool is ...
2
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1answer
52 views

Connect two networks with one hidden

I tried find out the answer for myself but I'm not 100% sure if it's the best way. I work for a large company, and my group also has our own separate test network. It's just a completely separate ...
6
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3answers
178 views

Lab: I need to determine information about a device on a specific port of a Cisco multilayer switch

I have a Cisco Catalyst that has a port that is up up, and the device does not show in the ARP table. The MAC address-table shows a MAC address for the port. What can I do from that switch to find out ...
1
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2answers
681 views

GNS3 - Telnet issue

I have created the following Network in GNS3 Let me explain the SetUp: The internet cloud Cloud 1 is connected to my LAN and not loopback. R1 routers' F0/0 is getting the IP from DHCP, to which i ...
2
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1answer
52 views

Lab: I am running 15.1 on a catalyst and need to disable redundant supervisormp

I am trying to find a way to disable the redundant supervisor mode in my switch, as it is disabling another line card, so it can have enough power to spare for a redundant slot I wont use. I have ...
1
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3answers
175 views

Cisco Switching Lab

Could you please advise with some ideas on how to setup a Switching lab in a production enviroment without harming the Production ? Basically I need 3 Cisco Switches where I can try some labs but ...
3
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2answers
661 views

Alternative to Cisco APIC-EM for small lab

Are there any alternatives to meet a small auto provisioning server for a Cisco switch (Cat3850)? I'm working to setting up a "plug and play" capable Cisco switch (Cat3850) in small isolated lab. I ...
1
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1answer
771 views

How to connect to a physical device to a virtual server that is connected to a virtual router [closed]

I have a lab setup like so in ESXi: Virtual MikroTik router (192.168.2.1) Virtual Domain Controller (192.168.2.2) Virtual Linux Server (192.168.2.3) The host itself is connected to a LAN with IP ...
2
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2answers
148 views

How to ensure startup-config is not changed, building CCIE rack

Let me start with short background for better understanding. We have LAB at work (Cisco devices mostly), and we would like to allow other employers connect remotely from their homes, build own labs ...
2
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1answer
226 views

Lab cisco Pat not creating any translations

I have a cisco 881 and a 6509 sup720 I have tried to configure both for pat but am having issues doing so. no translation traffic is generated. 881 configuration version 15.1 service timestamps ...
2
votes
1answer
2k views

Access list policy with odd and even filtering

I'm having some issues with some access list configuration regarding a topology. The lab requirements are: Deny any host with even-numbered IP addresses from the BM_R1 LAN from accessing hosts on the ...
0
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1answer
76 views

Separate network connection With One NIC [closed]

I am currently planning a lab setup for an academic situation. We have host pc's that students use and we wish them to both have access to the internet and networking kit in the lab. The university ...
1
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1answer
1k views

How to simulate internet connectivity with two Cisco routers only

I have a tunneling setup working in the lab using a pair of Cisco routers directly connected via Ethernet crossover on their WAN ports to simulate the internet. The problem is this is not realistic ...
3
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2answers
1k views

CCNA Static Routing - Routers not able to ping each other

I have the following topology: SW1 and SW2 have ip routing enabled. Both are able to ping the Loopback addresses: 2.2.2.2 and 2.2.2.3 Output for show ip route is: SW1>show ip route Codes: C - ...
1
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1answer
60 views

Named ACL Configuration

I started a Named ACL Lab today and my configuration is not quite working. LAB: http://gns3vault.com/security/named-access-list/ The first task is creating an ACL which blocks users from NSA's L1 to ...
1
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1answer
12k views

Can I run multiple networks on this MikroTik L3 switch? [closed]

Just purchased the MikroTik "Cloud Router Switch" (CRS125-24G-15-2HnD-IN) with the possible misunderstanding that I could define multiple networks within the router and assign various switch ports to ...
3
votes
1answer
1k views

Cable modem ARP behavior [closed]

I have three layer 3 devices in a pretty simple topology: PC1 -> [Fe0/0] C2621 [Fe0/1] -> [Fe0/2] Modem [WAN] -> Internet PC1: 192.168.254.100/24 C2621: Fe0/0: 192.168.254.254/24 ...
9
votes
3answers
3k views

Trying to test a virtual lab VRRP configuration for STP issues

I'm in the middle of setting up a lab with a VRRP configuration, and I'm trying to search for any possible issues we might run into in production. One issue I am aware of with VRRP is that it seems ...
3
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2answers
3k views

How do I set up secure remote access to my home lab network?

My current setup is the following: ATT ISP ---- ATT wireless router ---- cisco 890 wireless router My cisco 890 is for internet and remote VPN access from home to my company, however, I don't have ...
6
votes
3answers
693 views

Is there a way to test TRILL in a virtual lab?

I don't have access to devices to run TRILL for testing and learning purposes, so is there a way to set-up a virtualized lab to try it ? What would be the virtualisation system, the vendor, the ...
7
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2answers
1k views

Is it possible to emulate device other than Cisco and Juniper in GNS3 or any other environment?

For testing and research purposes, I know it is possible to emulate Cisco devices (with dynamips) and Juniper ones (via an "Olive", a FreeBSD based system running on qemu) in a GNS3 environment. Is ...
11
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8answers
20k views

I'm setting up a Cisco CCNA lab, what equipment would you recommend?

Is it okay to use a Cisco 2948 for CCNA students, after all it's cheaper to get these switches and they have more features? Wouldn't this be better than a 2950 switch?