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 […]
Cat6500 Sup2T CMP Note
I’ve had the Sup2T’s in the lab for a couple of days now. This is the time for trying out everything I want before deploying the system to production. One target for labbing is obviously the CMP, Connectivity Management Processor, which is new for Cat6500 systems. Nexus 7000 has already had it from the beginning. […]
IOS Upgrade from Modular to Non-Modular
Note to self (not yet personally tested): When upgrading Catalyst 6500 12.2SXI IOS from modular to non-modular in dual-supervisor configuration you cannot do any kind of switchover between the supervisors. You need to reload the whole switch. Source: CSCsb07831 (Cisco login required) Apparently the standby supervisor will keep reloading if you try the switchover method, […]
Using Cygwin to Boost Your Toolkit
Using command line tools is often very natural for network specialists as that really is the way of configuring the devices in straight-forward way, and traditionally that has made it possible to automate certain things easily. That concept also extends to other environments, and Cygwin is one of my favorite tools on Windows computers because […]
Designing Nexus 5500 for Distribution Layer
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 […]
IOS 12.2SX Software Releases – What to Use?
I’ve been thinking about Catalyst 6500 IOS upgrades lately. Those internal workhorses are usually not upgraded unless there are some specific reasons. Some of the Cat6500’s in my territory are running even 12.2(33)SXH releases, and SXH end-of-life announcement have already been made. That’s one reason for upgrading. One other reason is the need to get […]
Catalyst 6500 Sup2T Ethernet Module Compatibility
Many people think that Catalyst 6500 series is not actually very interesting anymore about 12 years after its introduction. However, the large installation base dictates that Cat6500 is not going to vanish any time soon. Cisco announced some new modules for Cat6500 last month. One of them is a supervisor module called Supervisor 2T (products […]