The Cisco NX-OS releases for different platforms are identified interestingly. Let’s start with the mother of all NX-OS releases: x.y(z) = for Nexus 7000 Here x is the major release or software train, y is the minor release and z is the maintenance release. An example of the version number is 5.2(5). See Cisco NX-OS […]
A small example about the “private-vlan synchronize” command in MST configuration mode (vlan 100 = primary VLAN, vlan 101 = secondary (isolated) VLAN): n5k-1(config-mst)# show Pending MST Configuration Name [test] Revision 0 Instances configured 3 Instance Vlans mapped ——– ——————————————————————— 0 1000-4094 1 1-100 2 101-999 ——————————————————————————- These secondary vlans are not mapped to the […]
Using dual-homed FEXes with Cisco Nexus 5000 switches presents some new issues for the network admins. One important feature is that the FEX port configuration needs to exist on the both N5ks. Let’s see the topology example where the FEX is connected to the switches with vPC (= dual-homed FEX): The server is connected to […]
Cisco has this week released NX-OS 5.1(3)N1(1) for Nexus 5000 Series switches. See the release notes for more information, and there really is lots of information: http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/release/notes/Rel_5_1_3_N1_1/Nexus5000_Release_Notes_5_1_3_N1.html Note: The Dual-layer vPC I talked about is called Enhanced vPC (EvPC) in the release notes.
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 […]
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 […]
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 […]
Cisco Nexus 5000 switches (5010 and 5020) are not really suitable for data center distribution layer from my point of view due to the limited number of VLANs supported (something like 512). They have enough switching power and maybe even port density but the VLAN limit is just too restricting. They also support 1G SFP […]