Python keeps coming up again and again in various networking discussions since people are always debating exactly how much automation stuff you should learn as you get more senior.Python keeps coming up again and again in various networking discussions since people are always debating exactly how much automation stuff you should learn as you get more senior.
Continue reading
Cisco is Coming out of its Shell
StandardI got to play with with the upcoming 16.6 CSR release and it finally has guestshell!
Guestshell is a linux shell that we can access from a Cisco device that lets do some interesting things.
Take a Break, I got this! – An EEM Post
StandardLately we have been looking at various automation topics like Python where we can do some configuration or grab some output on a few boxes. Today we are going to kick the tires with Cisco’s Embedded Event Manager (EEM), the neat difference with this feature is that it runs directly on the Cisco device so it can run based on events like a command being entered or the router getting a new CDP neighbor.
I’m Watching You – An IP SLA Post
StandardI wrote this for the CCNA sub but might as well share it here a well
Since everyone loves Infrastructure topics (right?!?!?) lets play with a neat feature on the R&S exam called IP SLA. I figure I might highlight some of the more overlooked topics in this sub.
What Dark Magic is this?
Standardcumulus@cumulus:~$ sudo ifconfig swp1 10.1.2.1/24 cumulus@cumulus:~$ sudo ifconfig swp1 up cumulus@cumulus:~$ sudo vtysh Hello, this is FRRouting (version 3.1+cl3u1). Copyright 1996-2005 Kunihiro Ishiguro, et al. cumulus# conf t cumulus(config)# host CSW01 CSW01(config)# router babel Make Babel instance command bgp BGP information eigrp Start EIGRP configuration isis ISO IS-IS ospf Start OSPF configuration ospf6 Open Shortest Path First (OSPF) for IPv6 rip RIP ripng RIPng CSW01(config)# router ei 123 CSW01(config-router)# network 10.1.2.0/24 CSW01(config-router)# end CSW01# show ip eigrp neighbors EIGRP neighbors for AS(123) H Address Interface Hold Uptime SRTT RTO Q Seq (sec) (ms) Cnt Num 0 10.1.2.2 swp1 10 0 0 2 0 2
Mobile Command – A SDN Post
StandardMy my, I’ve been meaning to make a few SDN posts for ages! Fortunately my golf game got cancelled today and I figured it was finally time to get this started.
A Tale of Two VPNs
StandardSince I still have my ASA lab up, let’s play with two types of VPNs.
Continue reading
That other other routing protocol – ODR
StandardSo now we talked about a somewhat more specialized routing protocol, let’s talk about a protocol that probably only a few of you would know about here.
On Demand Routing!
Continue reading
That other routing protocol – A IS-IS Primer
StandardToday we’ll be playing around with the routing protocol that never seems to get much R&S certification love out outside of the written and the SP track, IS-IS!
A Private VLAN Primer
StandardHi CCNA Security Gang,
Since VIRL now supports private vlans, let’s do a private vlan post since it seems to be confuse a lot of people.
Continue reading
The Router that thought it was an ASA
StandardThere seems be a lot of people interested in CCNA Security so let’s have a brief look at Zone Based Firewalls.
Continue reading
Fun with Linux – Quagga Routing
StandardIn this post I’ll be looking at using CumulusVX to doing some routing with a Cisco router, why Cumulus? It is a great Linux distribution / virtual switch that has a strong Quagga implementation.
Continue reading
Fun with Windows – BGP Routing
StandardNeed a another router for your BGP lab and can’t be annoyed to create another router in VIRL/GNS3 or plug in another router for your lab? Never ~feel~ fear, use Windows instead!
Continue reading
You Shall Not Pass – ISE TACACS+
StandardI recently rebuilt my ISE lab to play with 2.2 and figured I may as well do some security posts while I’m at it. Today we’ll briefly dip our toes in the water by playing with TACACS+’s Command Authorization.
VPN Wizardry – Anyconnect Multi Profiles
StandardHere is a quickie but a goodie if you work with Anyconnect. Anyconnect only remembers the last connection which can get very annoying if you are like me and have to connect many different VPNs throughout the day.
Breaking In – Fun with the Native Vlan
Standard
Since I’m still in security mode until I can get my massive SDN post completed, lets have a look at using Yersinia to have some fun with native vlans and DTP to remind everyone DON’T USE VLAN 1!!!!
Back to the Basics – Pipe Dreams
StandardTo finish off our fun with show commands series, likes look at one of my favourite tools, the pipe command!
Back to the Basics – Fun with the Routing Table
StandardJust for some Friday night fun….
Let’s look into some of the options that are available in the show ip route command that everyone may not be aware of.
Back to the Basics – Showing Run like a Pro
StandardContinuing the theme of showing what show commands can do, let’s look at show run for a bit.
Breaking In – Fun with SNMP
StandardWell as luck will have it I won one of those CCNA CyberOps scholarships and it starts….September…of next year…thanks Cisco! So since I haven’t managed to publish anything in a while, here is a entry I did for Reddit’s CCNA sub.