In my earlier post I described the setup I use for Wireshark contributions. In this post I’ll present a small memo about how to test a merge request (MR) that has been submitted in the Wireshark repository in GitLab. Here is an example of a MR that has not yet been merged in (as of […]
One of the cornerstones in successful Zabbix monitoring implementations is a database that performs well even under heavy load caused by saving large number of monitored values per second. Database partitioning is a feature that can be leveraged to speed up specific operations in the database. In short, partitioning enables dropping old slices of data […]
I had configured the Proxmox Virtual Environment (PVE) in my lab to send notifications by email, for example about any software package updates available. But I did not get any notifications about the updates. However, the same notification settings in the production cluster worked fine. It seems PVE has a feature (as of PVE 9.1) […]
Other posts about EVPN/VXLAN in Proxmox VE: Let’s continue inspecting ARP and ND suppression features when using EVPN in Proxmox Virtual Environment (PVE). Initial setup I still have the EVPN1 VNet (VNI = 5001) configured in the PVE cluster (from the previous post), with no IP subnet configured for the VNet. VM1 is on the […]
Other posts about EVPN/VXLAN in Proxmox VE: In the earlier post Configuring VXLAN in Proxmox VE I showed L2 VXLAN data plane implementation on a Proxmox Virtual Environment (PVE) cluster. There was no special control plane for MAC learning so the PVE nodes learned the locations of MAC addresses just on the go, flooding the […]
On a HPE Aruba Networking 6300M switch someone had changed the outbound BGP policy, but apparently the platform did not trigger outbound BGP updates automatically in that case, so I was looking for a soft outbound reset functionality. Tested with AOS-CX version FL.10.13.1090: myarubaswitch# clear bgp vrf MY_VRF ipv4 unicast 10.10.10.10 soft outInvalid input: outmyarubaswitch# […]
Other posts about EVPN/VXLAN in Proxmox VE: About VXLAN From Wikipedia: Virtual eXtensible LAN (VXLAN) is a network virtualization technology that uses a VLAN-like encapsulation technique to encapsulate OSI layer 2 Ethernet frames within layer 4 UDP datagrams, using 4789 as the default IANA-assigned destination UDP port number, although many implementations that predate the IANA […]
When launching EC2 instances on AWS, you might need to install and run the CloudFormation helper scripts (https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/releasehistory-aws-cfn-bootstrap.html). However, since February 2026, as of the latest CloudFormation helper scripts version 2.0-38 (released on 2025-12-04), installing them works fine, but running for example cfn-init causes an error: ModuleNotFoundError: No module named ‘pkg_resources’ The reason is this […]
What does this mean in the HPE Networking AOS-CX REST API response when getting the MAC address tables from a switch: GET /rest/v10.08/system/vlans/*/macs/*,*… ‘dynamic,11:22:33:44:55:66’: { ‘aged_on_subsystems’: {}, ‘attributes’: {‘local_move_disable’: False}, ‘denied’: False, ‘derived_entry_src’: ‘none’, ‘desired_port’: { ‘1/1/49’: ‘/rest/v10.08/system/interfaces/1%2F1%2F49’ }, ‘from’: ‘dynamic’, ‘inactivity_timeout’: 300, ‘mac_addr’: ’11:22:33:44:55:66′, ‘network_infra_mac’: False, ‘never_ageout’: False, ‘port’: None, ‘selected’: True },… Why […]
I, for one, was quite excited when IKEA announced new Matter-based affordable smart home devices in 2025. I finally got to buy some of them and I was going to add them in my existing Home Assistant system. Specifically, for this test, I bought: They are talking with each other using Matter over Thread, the […]