Per VLAN STP

jscimeca715jscimeca715 Member Posts: 280
Hey guys, I'm studying STP now and seem to have a pretty solid understanding of it. I do have a few questions.

1. How much is PVSTP used in real-life scenarios? It seems like it's a benefit, but it also appears to require a lot of configuration time.

2. Any tips on how to stay focused on troubleshooting these problems? I haven't started hammering away at testing yet so I might need to just wait...but I was curious if you guys have any tips.

Thanks in advance.

Comments

  • networker050184networker050184 Mod Posts: 11,962 Mod
    1. PVST is used extensively in the real world. I believe its the default on all modern switches.

    2. Learn your show commands very well.
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  • nelnel Member Posts: 2,859 ■□□□□□□□□□
    1. PVST is used extensively in the real world. I believe its the default on all modern switches.

    2. Learn your show commands very well.

    +1

    Just learn the concepts well and understand how stp operates. it will help you make good sense of all the show commands and whats going on in the network.
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  • rakemrakem Member Posts: 800
    Hey guys, I'm studying STP now and seem to have a pretty solid understanding of it. I do have a few questions.

    1. How much is PVSTP used in real-life scenarios? It seems like it's a benefit, but it also appears to require a lot of configuration time.

    Yep its the default setting on all modern switches...... Most pepole will change it to Rapid - PVSTP if it is supported.... rapid spanning-tree rocks
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  • mrblackmamba343mrblackmamba343 Inactive Imported Users Posts: 136
    PVST stands for per vlan spanning tree

    A root bridge is elected for every vlan on a switch. There is a spanning -tree instance for every vlan.

    Even though it is not recommended, you can have multiple root bridges for different vlans on your network. If you don't like the idea of a spanning-tree instance for every vlan look into MST (multiple spanning tree) which eliminates the need for PVST
  • networker050184networker050184 Mod Posts: 11,962 Mod
    PVST stands for per vlan spanning tree

    A root bridge is elected for every vlan on a switch. There is a spanning -tree instance for every vlan.

    Even though it is not recommended, you can have multiple root bridges for different vlans on your network. If you don't like the idea of a spanning-tree instance for every vlan look into MST (multiple spanning tree) which eliminates the need for PVST

    Who recommends that you have the same root bridge for every VLAN? I certainly don't set it up that way. I usually set up an HSRP group with alternating active and roots between the devices. Adds for some load sharing and redundancy.
    An expert is a man who has made all the mistakes which can be made.
  • sixarmsixarm Member Posts: 17 ■□□□□□□□□□
    I was also under the impression that having a different root bridge for each VLAN was quite a standard configuration to come across. As networker above mentions it adds load-balancing to the equation.
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