3.1.a (i) Address types, VLSM For this section you should understand the basics of IPv4 addressing. We should remember that an IPv4 address is a 32bit number with a max of about 4 billion. It’s written in dotted decimal notation like so 10.0.0.1 Each number separated by a decimal is 1 byte in size. …
Author Archives: vektorprime
How to force a reinstall of VMware Remote Console on Linux
Recently I had issues where VMware Remote Console was not working, every time I ran the installer it would run the uninstall. Needless to say this was frustrating. Eventually I had to remove the following directories and re-run the installer to get this to work. rm -rf /etc/vmware-installer rm-rf /etc/vmware-vix
Cisco Nexus (NX-OSv 9000) LACP + VPC BUG FIX
This post will show you how to fix the LACP “BUG” on the NX-OSv 9000 so that you can LACP to whatever devices you want. Thus you will be able to practice VPC topologies! If you need the NX-OS 9000 image for GNS3 go here: https://upw.io/wa/nxosv-final.7.0.3.I7.2.qcow2 For documentation on how to add the NX-OSv 9000 …
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How to Setup Multiple Context ASA in GNS3
How to Setup Multiple Context ASA in GNS3 In this guide I will show you exactly how to get a working lab for ASA multi-context in GNS3. First be aware that you CANNOT use the virtual ASA image. Instead we will have to use ASA version 9.1.15-16 and activate it with a key IN GNS3. …
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2.1.g (i) SPAN, RSPAN, ERSPAN
2.1.g (i) SPAN, RSPAN, ERSPAN SPAN What problem does it solve? Switchport analyzer (SPAN) We need visibility on the traffic coming into our LAN. We have a network monitor device that we want to send copies of the frames to. SPAN ports allow you to mirror a port to another one so you can capture …
2.1.f (iv) Loopguard, Rootguard
2.1.f (iv) Loopguard, Rootguard RootGuard Root guard makes sure that if we receive a superior BPDU on certain ports that we don’t trust them, and we can put the port into blocking state. Root guard should be enabled on “edge” or access ports. It’s usually accompanied by portfast. When a superior BPDU comes in, our …