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Northbound and Southbound APIs
I regularly hear the packet pushers and others discussing Northbound and Southbound APIs and keep forgetting which does what. Here is a summary, comments and corrections welcome. First a few...
View ArticleCML, VIRL or GNS3?
Cisco have confused me a little in the way they have brought their simulator to market. First it was VIRL and free, then CML was announced and the name change blamed on marketing. Now we have both....
View ArticleNetwork Cable and Optic Distances
Here is a list of common network cable and optic types, together with their distances. The costs are very rough and a little on the low side, I’ll try and update them. Speed / Base Media Distance Cisco...
View ArticleCisco Nexus TACACS config
According to the team where I work, our standard Catalyst TACACS+ config didn’t work properly. Here is the snippet they used to get going again: user = DEFAULT { default service = permit service = exec...
View ArticleIPv6 in a Global Company – a response: NPTv6?
This is a response this post by Ivan. In summary he is talking about the issues companies will face if they wish to use IPv6 and multi-home. Leaving aside the fact the most Small/Medium Enterprises...
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Arrival of the Camel (Cisco Modelling Labs)
A horse designed by a committee? My Account Manager kindly sent me this link: www.cisco.com/go/cml this morning. So VIRL CML is almost here. Most of what the site said is positive, Cisco has finally...
View ArticleDMVPN with Crypto
Following on from my previous post, I’ll record how to add encryption to an established DMVPN setup. A word of warning This will hammer your throughput. For example, the ASR1001 will do 5Gbps of...
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Intro to DMVPN
Although this has been well blogged before, as we’ll be rolling DMVPN out where I work I’d like to record the steps I took to configure and verify a working example in GNS3. Software The first hurdle I...
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Site-to-site IPSec VPN through NAT
This post follows on from the first in this series and looks at how to modify the config if there is NAT along the way as well as reviewing a couple of the verification commands. I’ve attached the full...
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ASA 8.4 on Mac OSX 10.8
Like many before me I wanted to emulate an ASA in my GNS3 environment. I am a Mac users and found this to be tricky so will post the steps I took to get it working here. Having done this, I was able to...
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