The ramblings of a computer geek
If you need to reboot a switch at a specific time, you can! Can be helpful for if you were performing a potentially disruptive configuration (where you might get cut off), you can set it to reboot after a specific period of time after you’re going to perform the configuration. Then if the configuration goes … Read more
We’ve recently started to move to an Extreme Networks VOSS Fabric based network, however due to the scale, we can’t change everything attached to it to work more seamlessly with the VOSS fabric based network operation. We have a large number of hosts for example that use Active-Backup bonding on their NICs when connecting to … Read more
If you need to perform a packet capture you can use the following below to get this exported to a PCAP file you can then open in WireShark. You can then TFTP off the file with the following: I normally use TFTP32/64 on the machine to which i’m TFTPing, but this has had problems recently. … Read more
During some upcoming changes I needed to test a mobile application to use a test IP address for a standard hostname. Problem is, I didn’t want to root my Android phone to be able edit the hosts file. There are apps such as “Hosts Go”, but in my case these didn’t work. On a normal … Read more
At about 15:00 on 1st November 2022, my FTTP broadband disconnected. Upon looking at the BT Openreach ONT, I saw the following light condition. Power Green (Solid) LOS (Loss of Service) Red (Solid) PON Off LAN Green (Solid with blinking occasionally) Unfortunately I don’t have a video or picture of this state, but needless to … Read more
Moniting with SNMPv3 is much like monitoring with SNMPv2 or 1 for that matter, except SNMPv3 offers greater security options. SNMPv1 or v2 offers very little security being based on a plain text community string, of course on the monitored device you can restrict which hosts are allowed to connect to your monitored device via … Read more
So, finally BT Openreach had got round to installing fibre optic cabling to the local area to provide fibre optic based Internet. If you’re interested to know if you can get (or if not register your interest) by using the https://www.openreach.com/fibre-broadband site. You might ask, what do you mean fibre Internet? I already have fibre … Read more
In this scenario I had a pair of Palo Alto Firewalls that were providing firewall services as a perimeter pair of firewalls acting in an active/passive cluster. Due to our internal network configuration, use of OSPF etc. the interfaces (ports) on the passive firewall were set to be down/disabled when that firewall was not active. … Read more
I’m currently in the process of moving from FTTC broadband to FTTP broadband, as part of this there is no copper telephone line because its fully fibre optic based. At the time of writing my ISP (plus.net) did not offer their own VOIP telephone service you could port your telephone number to, meaning in the … Read more
I recently came across an odd problem with the links from our Extreme Networks X695 switches to some Dell S5148F-ON switches, the X695 was running: 30.7.2.1, the Dell switch 10.4.3.6C1. Essentially what started the oddity was a transceiver failure. The equipment has been in production for a few months, all was working well. Suddenly a … Read more