I've had this problem for months. Sometimes it happens an hour after connecting a new RJ45, other times after a week.
I've tried unplugging it, restarting the switch, the router, the computer. Nothing seems to work, except making a new plu...
Posts published by “Alex”
I am currently evaluating Next-Generation Firewall concepts and features and remembered about the Zero Trust networking model. I do find the notion of "trust nothing" in the context of networking security very enticing. So I rese...
When a device sends an ARP Request, it broadcasts to all Nodes, which then check against their own ARP Tables and respond with an ARP reply or drop the Packet, but what happens if the device is not directly connected?
So assume some networ...
Our linux based device was originally configured to use locally DHCP assigned DNS servers, however after encountering a customer with this misconfigured, we changed the configuration to use static DNS servers (such as 8.8.8.8 and 1.1.1.1)....
To solve a specific server clustering problem I am opting to split the patching of the servers to both "in the same room" and "in another room". We have multimode cabling between all rooms in a full mesh, so there are e...
I am setting up a new Spine-Leaf-network (based on VXLAN, EVPN and iBGP) to replace our old campus network. As an intermediary step I want to connect the new switches with the old ones, so I can switch the VLANs of the old network on the n...
I have a Usecase where an Access Device need to reach a Core Device over the Internet. Access Device is configured with the Public IP of the Core device as of now so that it can reach the Core over the Internet.
However, we want to add an...
Got a catalyst 2690 on a small office net consisiting of 2 vlans, 10 and 20, 10 for the lan and corporate wifi and 20 fot guests wifi.
All lan ports are config on access mode vlan 10
The access point ports are trunk mode allowing pass 10 a...