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What happens when you disable STP?
You really, really do not want to disable STP where you connect switches to other switches. That is the entire purpose of STP. If you disable STP, and there is a problem, it will really be too late because your entire network could crash when you notice it, and recovering from a broadcast storm is no fun at all.
What is the purpose of STP in a switched LAN?
Spanning Tree Protocol (STP) is a Layer 2 protocol that runs on bridges and switches. The specification for STP is IEEE 802.1D. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network. Loops are deadly to a network.
Should I disable Spanning Tree?
STP should never be disbaled unless you have an extremely good reason to do so. If you’re wanting to reduce the amount of time it takes for an access port to come up, you should configure it as an edge port instead of disabling STP.
When should you disable STP?
The most common reason for disabling spanning tree is that the original 802.1D Spanning Tree Protocol (STP) goes through a fairly lengthy wait period from the time a port becomes electrically active to when it starts to pass traffic.
How to enable bpduguard on spanning-tree portfast trunk port?
This will enable the bpduguard on the trunk port above due to the switchport is in portfast (the command: spanning-tree portfast trunk). Some of the guys in this forum mentioned that it is not recommended to have bpduguard on trunk port and some mentioned it is okay to have this.
Do you need to enable portfast on a trunk port?
🙂 Enabling portfast on a trunk is so “yesterday”, in my opinion. If a trunk port (s) or an etherchannel is configured correctly, there’s a significant chance portfast is irrelevant. The speed to get the ports to go from down to passing traffic is really boils down to one or two seconds.
Can you use spanning-tree portfast trunk on another Cisco switch?
You should almost never apply a spanning-tree portfast trunk command to another cisco switch. If you go back to the basics… spanning-tree portfast allows the ports to skip the blocking to fowarding states and go immediately to forwarding. The spanning-tree portfast trunk does the same but for trunk connections.
Can you enable portfast on a stick case?
If you enable PortFast on a port that is connected to another Layer 2 device, such as a switch, you might create network loops. But you can enable portfast with router on stick case.where you have switch with trunk configured with router interface. Hope to Help !! 03-12-2010 12:45 AM 03-12-2010 12:45 AM