Cisco CCNP / BCMSN Exam Tutorial: Changing Origin Connection Election Effects - 0 views

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  #1 Hedrick Noonan on 31 Aug 13

   

  Your BCMSN and CCNP studies includes learning the important points of Spanning Tree Protocol (STP). A lot of it could be not used to you, while you discovered some of those facts in your CCNA studies. Prior to going to the intermediate and advanced level STP characteristics, let's review the main bridge selection process and discover ways to change these results.
  
  Each switch can have a Bridge ID Priority importance, more commonly known as a BID. This BID is just a mixture of a priority value and the switch's MAC address, with the priority value listed first. As an example, in case a Cisco switch has the default priority value of 32,768 and a address of 11-22-33-44-55-66, the BID would be 32768:11-22-33-44-55-66. Therefore, if the change goal is left at the standard, the MAC address may be the deciding factor.
  
  Changes are as being similar to people - when they first appear, they announce that they're the middle of the world! Unlike many people, it will be soon got over by the switches. BPDUs will be changed until one switch is chosen Root Bridge, and it is the switch with the cheapest BPDU that will become the Root Bridge.
  
  If STP is left completely alone, a single change will function as root bridge for each and every single VLAN in your community. Worse, that single switch is going to be chosen since it has a lower MAC handle than every other switch, which is not exactly the standards you want to use to choose a single root bridge.
  
  The time will certainly come when you want to establish a certain move to be the root bridge for your VLANs, or when you'll want to distribute the root bridge workload. For instance, if you've five turns and 50 VLANs, each switch may be wanted by you to behave while the root bridge for 10 VLANs each. You can make this happen with the spanning-tree vlan root order.
  
  SW1( config )#spanning-tree vlan 1??
  
  forward-time Set the forward delay for the spanning tree
  
  hello-time Set the hello interval for the spanning tree
  
  max-age Set the max age interval for the spanning tree
  
  priority Set the bridge priority for the spanning tree
  
  root Configure switch as root
  
  In this example, switches have been got two by us, and SW1 has been decided the basis bridge for VLANs 10, 20, and 30. We'll use the spanning-tree vlan root command on SW2 to produce it the root bridge for VLANs 20 and 30. If you think you know anything at all, you will certainly desire to check up about The Entire World Of Skate Parks｜coltear11のブログ.
  
  SW2( config )#spanning-tree vlan 20 origin main
  
  SW2( config )#spanning-tree vlan 30 root key
  
  SW2#show spanning vlan 20
  
  VLAN0020
  
  Spanning tree enabled protocol ieee
  
  Origin IDENTIFICATION Priority 24596
  
  Target 000f.90e2.1300
  
  This connection is the root
  
  SW2#show occupying vlan 30
  
  VLAN0030
  
  Spanning tree enabled process ieee
  
  Root ID Concern 24606
  
  Handle 000f.90e2.1300
  
  This link could be the root
  
  SW 2 has become the main bridge for both VLAN 20 and 30. I found out about view site by browsing newspapers. Observe that the priority value has changed from the standard of 32768.
  
  Within the next CCNP / BCMSN article, we'll have a look at more STP features. Click here puzzle to check up the inner workings of this enterprise.

   

  <div class="cArrow"> </div><div class="cContentInner">Your BCMSN and CCNP studies includes learning the important points of Spanning Tree Protocol (STP). A lot of it could be not used to you, while you discovered some of those facts in your CCNA studies. Prior to going to the intermediate and advanced level STP characteristics, let's review the main bridge selection process and discover ways to change these results. <br /> <br /> Each switch can have a Bridge ID Priority importance, more commonly known as a BID. This BID is just a mixture of a priority value and the switch's MAC address, with the priority value listed first. As an example, in case a Cisco switch has the default priority value of 32,768 and a address of 11-22-33-44-55-66, the BID would be 32768:11-22-33-44-55-66. Therefore, if the change goal is left at the standard, the MAC address may be the deciding factor. <br /> <br /> Changes are as being similar to people - when they first appear, they announce that they're the middle of the world! Unlike many people, it will be soon got over by the switches. BPDUs will be changed until one switch is chosen Root Bridge, and it is the switch with the cheapest BPDU that will become the Root Bridge. <br /> <br /> If STP is left completely alone, a single change will function as root bridge for each and every single VLAN in your community. Worse, that single switch is going to be chosen since it has a lower MAC handle than every other switch, which is not exactly the standards you want to use to choose a single root bridge. <br /> <br /> The time will certainly come when you want to establish a certain move to be the root bridge for your VLANs, or when you'll want to distribute the root bridge workload. For instance, if you've five turns and 50 VLANs, each switch may be wanted by you to behave while the root bridge for 10 VLANs each. You can make this happen with the spanning-tree vlan root order. <br /> <br /> SW1( config )#spanning-tree vlan 1?? <br /> <br /> forward-time Set the forward delay for the spanning tree <br /> <br /> hello-time Set the hello interval for the spanning tree <br /> <br /> max-age Set the max age interval for the spanning tree <br /> <br /> priority Set the bridge priority for the spanning tree <br /> <br /> root Configure switch as root <br /> <br /> In this example, switches have been got two by us, and SW1 has been decided the basis bridge for VLANs 10, 20, and 30. We'll use the spanning-tree vlan root command on SW2 to produce it the root bridge for VLANs 20 and 30. If you think you know anything at all, you will certainly desire to check up about <a href="http://ameblo.jp/coltear11/entry-11600902472.html" rel="nofollow">The Entire World Of Skate Parks｜coltear11のブログ</a>. <br /> <br /> SW2( config )#spanning-tree vlan 20 origin main <br /> <br /> SW2( config )#spanning-tree vlan 30 root key <br /> <br /> SW2#show spanning vlan 20 <br /> <br /> VLAN0020 <br /> <br /> Spanning tree enabled protocol ieee <br /> <br /> Origin IDENTIFICATION Priority 24596 <br /> <br /> Target 000f.90e2.1300 <br /> <br /> This connection is the root <br /> <br /> SW2#show occupying vlan 30 <br /> <br /> VLAN0030 <br /> <br /> Spanning tree enabled process ieee <br /> <br /> Root ID Concern 24606 <br /> <br /> Handle 000f.90e2.1300 <br /> <br /> This link could be the root <br /> <br /> SW 2 has become the main bridge for both VLAN 20 and 30. I found out about <a href="http://storefrontthemes.com/demo/echo/activity/p/203963/" rel="nofollow">view site</a> by browsing newspapers. Observe that the priority value has changed from the standard of 32768. <br /> <br /> Within the next CCNP / BCMSN article, we'll have a look at more STP features. Click here <a href="http://www.bookcrossing.com/mybookshelf/bronzehat33/" rel="nofollow">puzzle</a> to check up the inner workings of this enterprise.</div>

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