Month: November 2011

NX-OS and IOS Default Configuration Differences

I just found this a couple of days ago: http://docwiki.cisco.com/wiki/Cisco_NX-OS/IOS_Software_Default_Configuration_Differences Good summary about the default configuration differences between NX-OS and IOS. Lots of people are familiar with the settings in IOS but NX-OS is often a new experience. That document is one of the must-read documents for those who are migrating routing from good old […]

FEX Pre-provisioning

Today, in the highlight: FEX pre-provisioning. What is a FEX? It is Fabric Extender, a “remote line card” used in Cisco Nexus series switches. It is managed through its parent switch (like Nexus 5000 or Nexus 7000) but looks externally like a traditional data center access switch. In some cases you would like to configure […]

Cat6500 IOS Notes

According to SX SY ISSU Compatibility Matrix (http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/SX_SY_ISSU_Compatibility_Matrix.xlsx, link found for example in http://www.cisco.com/en/US/products/hw/switches/ps708/prod_release_notes_list.html), IOS 15.0(1)SY1 will be out still this year (or, they will decide about it this year…). The file has apparently been updated in the beginning of October however. Currently the latest version for 15.0SY train is 15.0(1)SY. I’m trying to get […]

Dual-layer vPC on Nexus 5000

Doing some googling for the coming NX-OS 5.1(3)N1(1) for Nexus 5000 I found this: Cisco NX-OS Software Release 5.1(3)N1(1) for Cisco Nexus 5000 Series Switches and 2000 Series Fabric Extenders: https://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/product_bulletin_c25-686744.pdf Update: The same document in HTML: http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/product_bulletin_c25-686744.html Yes there are the goodies like FabricPath and Adapter FEX and PTP, but who cares about those […]