DHCP Vendor Class Identifier – DHCP Option 60

In several meetings I get the question, how can I sent different DHCP options to different devices. The answer is to use the DHCP Vendor Class Identifier, DHCP option 60. Every device sends this option to the DHCP Server, and each DHCP Server can answer with specific options, depending on the option 60. I will … Read moreDHCP Vendor Class Identifier – DHCP Option 60

How to Protect from Spanning Tree and Loops in the Access Area

With modern architectures and campus designs, you do not need spanning tree anymore. But how could you protect from spanning tree BPDU’s and loops in the access area, e.g. from external devices? The classical scenario is the cleaner, putting the free cable into the switch because it is in his way. ArubaOS switches have some … Read moreHow to Protect from Spanning Tree and Loops in the Access Area

Operator Login with Radius Authentication and Authorization

This time is all about radius based operator login, as some devices might not support TACACS+. The post describes the operator login with radius authentication and command authorization. This post covers only the ArubaOS devices which do not support TACACS+ command authorization. Operator Login with Radius on ArubaOS Switches For those ArubaOS switches, which do … Read moreOperator Login with Radius Authentication and Authorization

Operator Command Authorization and Accounting with ClearPass TACACS+

This is the second post on the TACACS+ topic. This time the post is all about TACACS+ operator command authorization and accounting. This is very helpful for logging who does what at which time and makes troubleshooting easier. Operator command authorization and accounting means, that all commands issued at the device, are sent to the … Read moreOperator Command Authorization and Accounting with ClearPass TACACS+

Operator Login with ClearPass TACACS+

This post is all about operator login with ClearPass. I show the implementation of authenticating a network operator to Aruba Switches, Comware based switches, Aruba Controller and AirWave. For some devices, I will show the process with TACACS+. For those, which do not support TACACS+, I use radius authentication, which I describe in a later … Read moreOperator Login with ClearPass TACACS+

How Aruba Central Provisioning Works

This time I will demonstrate the Aruba central provisioning process, to zero touch deploy switches and Aruba Instant AP’s. The process is using Aruba Activate as well. But let’s start at the beginning. What is Aruba Central Aruba Central is the cloud-based management solution from HPE Aruba. In the past, Aruba Central was used to manage … Read moreHow Aruba Central Provisioning Works

New HP 5700 Switch Announced

HP 5700

HP announced the new HP 5700 switch as the new data center access switch. The switch supports IRF and is SDN ready. You can find the announcement here: http://h17007.www1.hp.com/us/en/networking/whats-new.aspx#.U_NThvmvX55 The switch is available in three different models: HP 5700-40XG-2QSFP+ Switch (JG896A) HP 5700-48XG-4XG-2QSFP+ Switch (JG894A) HP 5700-32XGT-8XG-2QSFP+ Switch (JG898A) For further details have a look at the … Read moreNew HP 5700 Switch Announced