Procurve Spanning Tree Priority



Procurve

  • Understanding STP, Understanding System Identifiers for Bridges in STP or RSTP Instances, Configuring STP on EX Series Switches (CLI Procedure).
  • Try specifying a core switch for each of your MSTP instances, eg on Procurve 1: spanning-tree instance 1 priority 1 spanning-tree instance 2 priority 2 and flip them around for procurve 2. Done that and still no dice. After going over the doco and config again and again I am starting to think this might be a bug.

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

Page 54: Spanning Tree Information 3.1.8 Spanning Tree Information HP ProCurve Switch xxxxx - CONSOLE - MANAGER MODE - Status and Counters - Spanning Tree Information STP Enabled Switch Priority Hello Time Max Age Forward Delay Topology Change Count Time Since Last Change: 4 mins. Console (config)# spanning-tree vlan 20 Setting root bridge priority The following command will set priority for root bridge selection. This example sets vlan 20 and 30 as priority 4096 and VLAN 40 through 45 as priority 8192. STP Port Priority Overview When a loop occurs in a network topology, spanning tree can use the port priority value for the ports to decide which port must be put in forwarding state. The port priority is only used to determine the topology.

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.

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

Spanning

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

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

Hp Procurve Spanning-tree Priority 0

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.

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

Procurve Spanning Tree Priority

Hp Procurve Spanning Tree Priority

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

Procurve Spanning Tree Priority Box

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