The ramblings of a computer geek
The AWS Transit Gateway can be used to join the networking of many VPCs (in the same or different AWS Accounts) within the same region together to facilitate communication, it may also be used in conjunction with DX (Direct Connect) or Site-to-Site VPNs to provide connectivity to other Cloud Platforms but additionally to on-premise networks … Read more
I always find this a bit of a confusing one, just running a “no lacp key” doesn’t work, what you actually need to do is set it to “default”. So for example let’s say you have a LACP key assigned to interface 1/13 which you want to remove, its as simple as running the following … Read more
I was attempting to run a Python script on a Extreme Networks EXOS switch, but it didn’t work. The fix was simple, add the following line to the Python script to import the “exsh” module.
IPerf is a tool that can be used to measure the bandwidth and quality of a network link. Its a useful little tool, so I’ll introduce some of the basics of how you can use it to perform some tests. Bear in mind this is not an exhaustive guide, there are many tweaks that can … Read more
On VOSS/FabricEngine SLPP should be configured on every VLAN at the point where it leaves the fabric and meets a non-fabric loop prevention strategy. This will prevent any loops from impacting the fabric by closing down ports where a loop is detected. The below assumes you already have SLPP configured on your upstream switches. If … Read more
The concepts of Traffic Policing and Traffic Shaping can get very detailed, this article intends to be a very high level explanation, I’ve provided some links below that go into more detail. But, first let’s set the scene. When transmitting traffic across a network connection, there are limits, the most notable is the limit in … Read more
Attempting to play a multicast stream from Windows VLC Player, was seeing the IGMP Snooping picking up something from my machine, but not the join to the specific group (channel/stream) I was trying to view. I was attempting to get to a stream: udp://@239.4.6.0:1234 Resolution To resolve the problem, it turned out to be VirtualBox, … Read more
The Brocade SAN Switches have SNMP capability which can be used for configuration and monitoring. These instructions detail how to configure SNMP on the SAN switches to allow them to have their state be monitored via SNMP from a suitable monitoring platform (e.g. NagiosXI or Opsview etc.). We are not configuring SNMP Traps, this is … Read more
At the time of writing (29/03/2024) the recommended EXOS (SwitchEngine) version for the X450-g2, X460-g2 and 5420 (as well as other hardware) is EXOS 31.7.2.28-patch1-75. We recently purchased some new 5420 switches and are upgrading some existing X450-g2 and X460-g2 to the latest recommended software versions. However we have identified an issue that currently at … Read more
A trial licence is fine for testing some stuff, but if you need to remove it, for example when it causes you issues in a stack when the master thinks it on perimeter, but the backup is not. Remove Licence (Option 1) https://extreme-networks.my.site.com/ExtrArticleDetail?n=000001267 Remove Licence (Option 2) https://extreme-networks.my.site.com/ExtrArticleDetail?an=000092952 Verify Current Licence Removing Stacking Licence Level