So it was a usual day in the wonderful world of networking and projects. Then I was suddenly lost in the Private VLANs. You know, the feature that has existed a long time in Cisco switches but still there are some known and unknown limitations in using it. Let’s talk about PVLANs. First the basics […]
Importing Configuration in the Switch Profile
In an earlier post (Dual-Homed FEXes and Switch Profiles) I wrote about the switch profiles and how to use them to configure dual-homed FEXes. I mentioned that it is possible to import existing configurations into the switch profiles. Now I was really attempting it in practice. When importing configurations I constantly struck myself to the […]
Nexus 5000 and Nexus 2000 Series Twinax Cables Certification Matrix
If you are going to use Twinax cables with your Nexus 5000 series switches or Nexus 2000 series FEXes you can check the certification matrix here: http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps10110/data_sheet_c78-568589_ps9670_Products_Data_Sheet.html As a bonus sector, data sheet for the 10G SFP+ modules is found in http://www.cisco.com/en/US/prod/collateral/modules/ps5455/data_sheet_c78-455693.html.
Life of a Change
I’ve been quite busy doing “stuff” the whole winter. Here is one piece of “stuff”: Life of a Change. T minus 7 weeks I created the Change Request (CR). It was based on the discussion we had had with the customer and a service provider about developing the customer connections of the SP. During the […]
majornetwork.net Is Now IPv6-Enabled
Majornetwork.net is now IPv6-enabled! I just forgot to ask for the AAAA record from my provider. Don’t always think that everything has to be hard! I also included an IPv4/IPv6 connection status display for visitors on the right side. More information about the World IPv6 Launch Day (6-Jun-2012): http://www.worldipv6launch.org/
Juniper SRX100 and HE IPv6 Tunnel
“And now something totally different” I bought a Juniper SRX100 as my Buffalo access point/router did not keep up with my upgraded Internet connection speed. I hadn’t used Junos practically at all before that so that world was new for me. I had some specific requirements for my new router: Size (small enough to fit […]
15.0(1)SY1 is out
Well, I started following it, so here it is: IOS 15.0(1)SY1 for Catalyst 6500 is out: http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/15.0SY/release_notes.html
Catalyst 6500 IOS 15.0(1)SY1 almost out
Cisco Catalyst 6500 IOS version 15.0(1)SY is still the latest version in the 15.0SY train for Sup2T. However, 15.0(1)SY1 is very near: http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/product_bulletin_c25-696622.html “Cisco IOS Software Release 15.0(1)SY1 includes the following: Support for the Cisco Catalyst 6904 4-port 40 Gigabit Ethernet Interface Module Support for the Cisco Catalyst 6500 Series Network Analysis Module 3 (NAM-3) […]
Choosing Your Core Switches
When designing data center or campus LAN with Cisco products (see I made the point clear here immediately) a no-brainer solution is using Nexus 7000 switches in the core. There aren’t really many cases you can go wrong operationally with it in general-purpose data center or even campus environments. But, if you think they cost […]
Cisco Live 2012 London Afterthoughts
Returned from Cisco Live 2012 (the European edition in London, Jan 30 – Feb 3) I’d like to share some thoughts about the happening. This was my second time in this world-class Cisco event, the first time was in Networkers 2008 in Barcelona. This time we were four network specialists and architects attending from our […]