• Whenever there is any edge-port(rstp admin-edge-port)flap in a single RSTP(Rapid Spanning Tree) configuration we are seeing a complete spanning tree convergence causing an outage.In this example below port 13/15 is configuredas rstp admin-edge-port.When the port 13/15 flaps, we see TCevent.
• Whenever there is any edge-port(rstp admin-edge-port)flap in a single RSTP(Rapid Spanning Tree) configuration we are seeing a complete spanning tree convergence causing an outage. In this example below port 13/15 is configuredas rstp admin-edge-port. When the port 13/15 flaps, we see TCevent.
• The default configuration for a port is “auto-edge-port.” The port will wait for 3 seconds to determine if any BPDU are received, before going into the forwarding state. Rack2sw2# show spanning-tree l1 detail include Edge.
• Email, phone, or Skype. Can’t access your account?

I want to point out that Ruckus/Brocade has 2 commands that contradict each other when configuring Spanning Tree:

Brocade(config-vlan-1)#spanning-tree ?

802-1w Enable Rapid Spanning Tree IEEE 802.1w
rstp Enable Rapid Spanning Tree

Since RSTP is the same as 802.1w further clarification is needed.

You can configure an access-port group for all the edge ports on the access switch. Then the group as a whole can be configured for bpdu-block-on-edge. This will make sure to disable any edge ports that will receive BPDU packets from the downstream devices.

Brocade(config-vlan-1)#spanning-tree rstp is a Brocade early implementation of the IEEE 802.1W which provided only a subset of the standard, whereas the

Brocade(config-vlan-1)#spanning-tree 802-1w feature provides the full standard, so basically you should use 802.1w.

How to configure Spanning Tree on Brocade

Ran mainly on a per VLAN basis.

Brocade# conf t
Brocade (config)#vlan 1
Brocade (config-vlan-1)# spanning-tree 802-1w – enabled spanning tree basic mode
Brocade (config-vlan-1)# show 802-1w – shows spanning tree information
Brocade (config-vlan-1)# spanning-tree 802-1w priority 0 – to designate that switch Root bridge

If you know there is a point to point link between 2 rapid spanning tree devices you have to turn that on at the interface level

Point-to-Point/Uplinks
Brocade (config-vlan-1)#int e 1/1/1
Brocade (config-if-e10000-1/1/1)# spanning-tree 802-1w admin-p2pt-mac – don’t allow for a broadcast domain, assume there is a link between 2 rapid spanning tree root bridges/uplinks ( without this it will fail over in 2 seconds or less, but fail back takes the traditional 30 of listening and learning, but this allows it to fail forward and back in 2 seconds or less

Access/Edge-Ports
Brocade (config-if-e10000-1/1/1)# int e 1/1/3 to 1/1/24
Brocade (config-if-e10000-1/1/3-1/1/24)# spanning-tree 802-1w admin-edge-port (not really required, just means topology changes on the edge is not going to cause re-convergence on the core links or vice versa

Brocade (config-if-e10000-1/1/3-1/1/24)# show run – will see spanning tree on the VLAN and the int ports

Spanning-tree Admin-edge-port

***DO NOT USE VLAN1 IN PRODUCTION, THIS IS PURELY FOR DEMONSTRATION PURPOSES***