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2.2.a.i IGMPv1, IGMPv2, IGMPv3

March 24, 2018 at 10:03 am
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Adding the ASAv to EVE-NG

March 24, 2018 at 8:00 am


I am going to need some ASAv action in EVE-NG next week for a project I am working on. Here are the steps I hope work! 😋 I grabbed these from the EVE-NG site and added my own elaboration where I thought necessary.

I will try and shoot a video of these steps next week as well.

Step 1: Acquire the asav941-200.qcow2 or asav952-204.qcow2 files for EVE-NG use

Step 2: Fire up WinSCP or FileZilla and connect to the EVE-NG IP address for FTP purposes

Step 3: Upload the appropriate .qcow2 from Step 1 to the root of the EVE-NG system

Step 4: Create the directory in EVE-NG for the ASAv image storage:

mkdir -p /opt/unetlab/addons/qemu/asav-941-200

Step 5: Move the image to that directory:

mv asav941-200.qcow2 /opt/unetlab/addons/qemu/asav-941-200/virtioa.qcow2

Step 6: Run these commands to enable Telnet access instead of VNC:

apt-get update
apt-get install libguestfs-tools
cd /opt/unetlab/addons/qemu/asav-941-200/

guestfish -a virtioa.qcow2
mount /dev/sda2 /
touch /use_ttyS0
umount /

Step 7: Clean and fix permissions:

/opt/unetlab/wrappers/unl_wrapper -a fixpermissions

That does it! The image should now be ready for addition as a Node in the EVE-NG Web client. Happy lobbing!

3.3.h Routing Protocol Redistribution Terminology

March 23, 2018 at 3:42 pm
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Juniper Expands the “Test at Home” Option for Certification Exams!

March 23, 2018 at 1:30 pm


I have never done an exam this way with Juniper – but I plan to next week. I will do a full report here on the blog regarding the experience. You can test in the convenience of your home or office with the proctor monitoring you via Webcam!

The Juniper Networks Certification Program team has expanded the online proctoring (OP) option from our Associate-level exams only to now include our Specialist and Professional-level certification exams.

This expansion means thirteen additional Specialist and Professional certifications are now available to take online including our newest Cloud and Automation/DevOps exams.

To make sure you are able to test this way – be sure to run their simulation of the experience located here:

Click Here to Test Your Setup

3.2 An Introduction to IP Multicasting

March 22, 2018 at 9:39 pm
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Manual Summarization with BGP on Cisco Routers

March 22, 2018 at 8:57 pm


One of the topics that will be featured in my upcoming CBT Nuggets module, Border Gateway Protocol (BGP) – Advertising NLRI, manual route summarization in BGP. This post serves (as well as more to follow) cover the highlights of the video coverage.

There are two methods of performing aggregation with BGP on a Cisco router. You can create a static route that represents the aggregate and then advertise that route using the network command. Or, you can use the aggregate-address command.

Here is an example of the static route approach:

router bgp 65100
   network mask
   neighbor remote-as 65200
ip classless
ip route Null0

Notice how the static route directs to the bit bucket (Null0). This is because it is not an actual network destination. It is an artificial construct to permit the route in the routing table so we can use the network command in BGP. There will be more specific entries in the routing table covered by this advertised summary and the router can follow those instructions. Should all the more specific entries be removed, then the static route has traffic discarded for the summary (this is the desired behavior, typically).

With the aggregate-address command approach, you ensure component routes of the summary exist in the BGP table (thanks to the network statement or redistribution), and the summary address is advertised via BGP. Here is an example:

router bgp 65100
 aggregate-address summary-only
 redistribute eigrp 100
 neighbor remote-as 65200

Note that if you forget the summary-only keyword with the aggregate-address command, you will advertise the summary as well as the specific routes. A future post will demonstrate when this approach might be useful.

3.5.b.iv OTP Multiple Service Providers Scenario

March 21, 2018 at 11:20 pm
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