Category: Switching
Configuration Example, Switching
HP A4800G – DHCP relay
This article isn’t very difficult and spectacular. It is just for me as a quick note to configure DHCP relaying on a HP A4800G switch. The configuration of this type of switch is a little different compared to Cisco and/or legacy HP ProCurve switches. The following steps are required to configure DHCP relaying: <SW01>system-view System … Read More
Configuration Example, Switching
HP Virtual Connect Manager
While change the configuration of within a HP Virtual Connect Manager I noticed that I didn’t have any options to delete server profiles, Ethernet Networks or Shared Uplink Sets within the web browser. I needed to change the configuration dramatically from an active / standby configuration to an active / active configuration. I also needed … Read More
Cisco Spanning Tree Scalability
A colleague (Twitter: @Toonieh) mentioned spanning-tree scalability in a Cisco network. He had an article about this matter. All the credits on this post go to him. I found the article on internet and post it here to be able to find it quickly.. In a Layer 2 looped topology design, spanning tree processing instances … Read More
Upgrading Cisco switch stack
I always upgrade a switch stack with one single command. Last week I received a call from a customer with the question about the upgrade procedure for a switch stack. The customer wanted to upload the image separately to every single switch. I told him that he could upgrade all switches at once. Since I … Read More
Cisco stack: version mismatch
When adding a new switch to an existing stack, the new switch should have the same software image as the existing stack member switches. If the new switch has different software, the switch isn’t capable of joining the stack. Switch/Stack Mac Address : 588d.0918.3100 H/W Current Switch# Role Mac Address Priority Version State ———————————————————- *1 … Read More
AutoQos error while generating commands
First of all, the post isn’t about explaining QoS. Configuring AutoQos on Cisco switches should be very easy. At least, that is what all the Cisco documentation tells you. I always thought that the statements about configuration AutoQos were true, but a few days ago I would disagree. I was configuring multiple switches, Cisco Catalyst … Read More