@ -136,16 +136,38 @@ Do not try to change the PVID here. It will fail (inexplicably).
## Managing LAG and LACP Configurations
## Managing STP configurations
These instructions are for utilization of the STP configuration panel.
**IMPORTANT NOTE:** The OIT link we have will administratively go down automatically if it recieves ANY STP packets! **DO _NOT_** allow STP packets to touch OIT's network. You **MUST** disable STP for these interfaces!
Note: Some of these configs are probably broken in some ways, and need to be fixed in order to operate properly (example, topography of the network is not propogating the way it's supposed to).
### View STP configuration
Click on the Spanning Tree menu on the left hand side. It looks like this:
The CIST Priority is probably the most important - the higher up the network you go, the higher the priority should be. For example, the root of our network is 0, M1 is 4096, and other switches are bigger numbers.
#### Per Port Configurations
If you click on the Port Config link in the left menu, you will be greeted with this.
![stp port config](images/TL-SG3424/port-config-stp.png "stp port config")
Most of the time, you only need to select the ports, and set the status to Enable or Disable, but sometimes you want to set the path costs and the priority of the link itself.
## Saving Switch Config
To save the config, click on the "Save Config" option on the left menu. When you click, it will ask you if you're sure and save the config. This will take at least a few minutes.
@ -16,8 +16,12 @@ STP is the Spanning Tree Protocol. STP handles redundant paths with the tree, an
This prevents switching loops from occurring. Very useful when your users make mistakes, so that the entire network doesn't go down.
We use the original version of STP, versus RSTP and MSTP, for all devices.
STP is typically enabled on a port-by-port basis.
[Example of STP](packets/stp.pacpng)
CDP is the Cisco Discovery Protocol. Packets like this are generally not originated on our network, and rather are originated on the Clarkson OIT's network. It helps identify the Cisco switch that the current device is connected to, and allows quicker debugging when in a pinch. It has a lot of information about the connected port, such as the VLAN tag that is delivered from the switch, the IP address for the switch management, the name of the switch, software versions, and more.
@ -26,6 +30,8 @@ CDP is not something that is really useful, but sometimes you will see it. It ca
CDP is typically enabled on a port-by-port basis.
[Example of CDP](packets/cdp.pacpng)
## VLANS (802.1q)
VLANs (also known as Virtual Local Area Networks) are used to separate different Level 2 and higher broadcast domains.