Network design, architecture, thinking, working. Tech.
I recently needed to secure the reverse console access using Cisco IOS router. Now for many years, we have been doing this over telnet and the configuration has been straightforward. But configuring it to support SSH instead of telnet is a little bit different, awkward in fact.
TLA is a recursive acronym for Three Letter Acronym. Which is pretty funny. eTLA – eXtended Three Letter Acronym – used to describe four letter acronym. Which is even funnier. Note the use of best marketing practice with dropped ‘e’. Very kewl Who said nerds don’t have any humour.
An article I wrote on concerns about FCoE adoption has been posted at The Future of Storage and reviews seven reasons why FCoE might not achieve critical mass in the marketplace. Feedback appreciated. Is anyone considering using FCoE in real life ?
In iSCSI Part 3 – Server Side – iSCSI Host Bus Adapters and IP Performance I looked at how server side issues would affect the traffic generated on a per server basis. I recommended that you use iSCSI HBAs for high intensity servers to meet the high levels of performance.
The next level is evaluate how the server should connect to the network, specifically, this means how many ethernet ports you need, and what configuration is needed to support them to deliver high availability / redundancy and increased bandwidth.
Over the years I have memorized the IOS seven layer model. But sometimes I need to double think myself to check and I found this on Wikipedia
ASAi – (ass-i) – The correct plural term for more than one Cisco ASA firewall appliances.
I am working my way through the next couple of articles on iSCSI Network Design. Its getting complicated is some ways. I noticed this article todayhttp://vinf.net/2008/04/09/how-does-an-hp-fibre-channel-virtual-connect-module-work/ explaining how Fibrechannel failover work for a HP Fibrechannel Virtual Connect in a blade server chassis. It is all rather confusing, and seemingly no more complex that the iSCSI network design.
Its possible that you would already have some Fibrechannel in your estate. Perhaps the cost of Fibrechannel for some new servers is too much when you calculate the HBA and Fibrechannel switch port costs, or you don’t need the complexity of Fibrechannel for a simple server setup. Lets look at options for connecting to the Fibrechannel nteworks.
Cisco announces the Web Application Features for the ACE module
I needed to work out whether a SFP was installed into a C6500 line card today. (OK, so I don’t do this kind of thing very often) and it took me a few minutes to realise where I would get this information.
