My Personal Blog
Technical stuff. Everything is my own.
Cisco got different kind of Nexus 7k devices. Why a Cisco Nexus 7702 with only one supervisor and the possibility for 1 blade ? In a good Data Center design there are always redundant pairs of devices. So for instance 2x Nexus 7710 as a redundant core. But what if I do have a small … Read more
When I wanted to change the ip address of the Cisco 3520 camera I did get : With chrome, safari, firefox and IE I saw the same. How can I put a static ip address in the gui for the camera ? After some tries I could use : https://<IP OF CAMERA>/ipaddressing.cs?version=1.0&sessionID=<SESSION ID>&action=set&ipVersion=1&addressingType=2&ipAddress=<NEW IP ADDRESS>&subnetMask=255.255.255.0&defaultGatewayIPAddress=<Default … Read more
Right now a lot of Nexus 9K’s are sold by Cisco. Customers are using the NX-OS mode first and then they want to upgrade in the future. But there is a catch ! A Nexus 9K which is a spine, like the 9336PQ, can only run in ACI mode and NOT in NX-OS mode. Every … Read more
I wanted to have a bitnami virtual appliance in my vSphere environment. Of course I was using the documentations and there was : If you want to run on VMware ESX or ESXi you can use the “vmkfstool” command line that you can find in your server host to import/export the machine: $ vmkfstools -i … Read more
Ofcourse I can”t remember all my old passwords, so I have to do a password recovery for a Cisco switch. Just hold the mode button and poweron the switch. After 20-30 sec you can release the button and you”ll see at the console : Using driver version 1 for media type 1 Base ethernet MAC … Read more
Identify iSCSI traffic : class-map type qos class-iscsi match protocol iscsi match cos 4 class-map type queuing class-iscsi match qos-group 4 policy-map type qos iscsi-in-policy class type qos class-fcoe set qos-group 1 class type qos class-iscsi set qos-group 4 policy-map type queuing iscsi-in-policy class type queuing class-iscsi bandwidth percent 10 class type queuing class-fcoe bandwidth … Read more
The nexus portfolio is very compleet and there are some overlaps regarding the devices and features. A lot of people is asking when do the positioning a certain Nexus switch. Here’s is a quick overview of the portfolio with some unique features : Nexus 7000/7700 OTV, LISP, VXLAN, FCoE, High Density 1/10/40/100 Gb … Read more
The initialsetup of a Fabric Interconnect is very easy. Just connect the consolecable and the follow the instruction. Configuring Fabric Interconnect B is even more easier when there is a linkconnection between the FI’s.
Sometimes you want to test things, just to make sure you understand it, before you implement it in real life. But what if you don’t have access to routers. Some years ago I was running dynamips and now ther is GNS3. Much easier to install. Well, I got GNS3 running on my laptop, so that … Read more