Spanning tree on C3750 SG300-compatible mode?

Similar Questions

• Is the spanning tree bpdu filtering on the 5548 "bpdufilter default spanning-tree portfast'

  It seems to me as "the protocols spanning-tree bpdu filtering" on the 5548 the same "spanning-tree portfast default bpdufilter" on the switches of the series N - is that correct?  If this is not the case, what is the equivalent command to 'spanning-tree portfast default bpdufilter?

  Ken

  They lead to the same result, just with a little different method. N-series bpdufilter search all ports configured for portfast and disables the transmission and reception of BPDUS on these interfaces. With the looks of 5548 bpdufiltering for ports with covering weight tree disabled. There is not a command on the 5548 that will search interfaces in portfast mode and filter the BPDU.

• SGE2010 switches, VLAN and a port blocked by spanning tree

  People,

  I have 2 groups of switch.

  SGE2010 2 with VLANS is defined as 10,20 and 30

  VLAN 10 is the management VLAN and it uplinks to our border router.

  VLAN 20 is the workstation VLAN, and all workstations are pointing to the switch as their default GW

  VLAN 30 is the ip phone VLANS, and all phones use this as a gateway.

  I have a GAP between the switches said, we have a few servers on the ip phone switch that must be accessed by the clients of the workstation and the unique link of 100 MB through the router probably won't be enough.

  If I understand correctly, because the switches have different networks on them, a simple shift will not work. I did create a gap and addresses on each side, but it does not appear in this mode, I can block vlan 10 transit to the LAG, with this block I'll end with a logic loop and spanning tree will block the uplinks or LAG itself.

  I have attached a picture with a diagram of our current put in place.

  Any help/advice would be much appreciated.

  John, the 802 standard. 1 initial q indicates there isn't only global tree covering weight independently of belonging to a vlan. It's why you run into problems. Cisco has developed PVST to run on circuits of the ISL. BPMH was originally defined as 802. 1s, which is a combination of 802. 1 q + RSTP. The 802. 1s were later modified to become part of the 802. 1 q.

  The person is incorrect, because they cite "because spanning tree is construction by vlan. They are incorrect, because you have to set the properties of tree cover to allow the spanning tree protocols by vlan. Small business switches do not support the owner Cisco PVST and PVST +. However, the SB switches support BPMH which is a standard of the IEEE.

  How works the BPMH, it's that you have called proceeding, i.e. each construction covering tree. Then you have the region, SB switches support only 1 region. The region maintains the instances. Basically how it works, you activate the EMU at the global level. Then, you specify the instance. As an example, the vlan 1 is instance 1. VLAN 2 is 2.  This will allow you to run 2 physical wires between switches vlan different without looping. If you use classic STP or RSTP, the least costly path will go to the State to block/cast who works as expected.

  -Tom

• Problem with a spanning tree Protocol

  Hello

  I have a problem with the spanning tree Protocol, when I connect a printer on C3560E cisco switch. It's the Show Logging:

  * 27 sep 18:57:29.451: % SPANTREE-7-PORTDEL_SUCCESS: GigabitEthernet0/8 removed from Vlan 600
  * 27 sep 18:57:31.976: % SPANTREE-6-PORT_STATE: Port Gi0/8 instance 600 from blocking disabled
  * 27 sep 18:57:31.976: % SPANTREE-6-PORT_STATE: Port Gi0/8 instance 600 from blocking to listening
  * 27 sep 18:57:32.731: % SPANTREE-6-PORT_STATE: Port Gi0/8 instance 600 moving to listen to persons with disabilities
  * 27 sep 18:57:32.731: % SPANTREE-7-PORTDEL_SUCCESS: GigabitEthernet0/8 removed from Vlan 600
  * 27 sep 18:57:35.072: % SPANTREE-6-PORT_STATE: Port Gi0/8 instance 600 from blocking disabled
  * 27 sep 18:57:35.072: % SPANTREE-6-PORT_STATE: Port Gi0/8 instance 600 from blocking to listening
  * 27 sep 18:57:37.068: % LINK-3-UPDOWN: Interface GigabitEthernet0/8, changed State to
  * 27 sep 18:57:38.075: % LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/8, changed State to
   

  This is the configuration of the port, this switch was created L2 of the Vlan:

  See the memory of Vlan:
  
  600 PLT_SERVICE active Gi0/8
   
  Display Port access:
   
  interface GigabitEthernet0/8
  Zebra printer description
  switchport access vlan 600
  switchport mode access
  logging events spanning tree
  event logging status
  end
   
  Trunk Port:
   
  interface GigabitEthernet1/1
  Description box
  switchport trunk encapsulation dot1q
  switchport trunk allowed vlan 1 600
  switchport mode trunk
   

  Please someone help me.

  Kind regards.

  Thank you.

   
   
   
   
   
   
   
   
   
   
   

  Hello

  The port passes all traffic? You can test the printer.

  Thank you

  John

• Trying to open iTunes to download music, but iTunes needs to not be a compatible mode in order for me to open iTunes

  Original title: itunes

  Hi I'm new this update from Microsoft. I am trying to open iTunes to download music but the iTunes must not be a compatible mode in order for me to open iTunes, I tried lookin for the mode in the settings but not able to find it. If someone could help me, please do.

  Hello

  ITunes is Apple's software.

  And we know nothing on your computer.

  Read this, and if it does not help, contact Apple.

  Uninstall everything according to the instructions from Apple:

  «Remove and reinstall iTunes, QuickTime, and other software components for Windows 7»

  https://support.Apple.com/en-AU/HT204275

  It is also the same list of what to remove what is in the link above from Apple:

  http://pcsupport.about.com/od/findbyerrormessage/a/MSVCR80-DLL-not-found-missing-error.htm

  Or try this program to remove it:

  http://www.revouninstaller.com/revo_uninstaller_free_download.html

  Then, download and save the iTunes on the desktop > then right click > select run as administrator to install.

  If the advice already given does not, please contact Apple for assistance.

  "Not to install iTunes or QuickTime for Windows"

  http://support.Apple.com/kb/HT1926

  "iTunes support-how to use iTunes.

  http://www.Apple.com/support/iTunes/

  "Contact iTunes Support.

  http://www.Apple.com/support/iTunes/contact/

  Or ask in the community Apple iTunes:

  https://discussions.Apple.com/community/iTunes

  See you soon.

• Spanning tree question

  I have a stack of 4 switches PowerConnect 7048 core. There are unacceptable delays on the network so I'm cleaning configurations and verification spanning tree as these have been set up by he previous admin. The four active links of 10 GB, the spanning tree different reports States:

  two are

  Te3/2/1 port active
  Status: Disabled role: disabled
  Identification of the port: 128.167 shipping: 0
  Fast port: no Protection from root: No.
  Designated the bridge priority: 4096 address: 5C26.0AAA.1EA6
  Identification of the designated port: 0.0 cost of access road designated: 0
  Root regional CSE: 80:00:5 C: 26:0 A: AA:1E:A6 CST Port cost: 0
  Root Guard..................................... FAKE
  Loop Guard..................................... FAKE
  TCN Guard...................................... FAKE
  Portfast auto... TRUE

  and two are

  Te2/2/2 port enabled
  State: Forwarding role: designated
  Identification of the port: 128.112 shipping: 2000
  Fast port: no Protection from root: No.
  Designated the bridge priority: 4096 address: 5C26.0AAA.1EA6
  Identification of the designated port: 128.112 cost of access road designated: 0
  Root regional CSE: 10:00:5: 26:0 A: AA:1E:A6 CST Port cost: 0
  Root Guard..................................... FAKE
  Loop Guard..................................... FAKE
  TCN Guard...................................... FAKE
  Portfast auto... TRUE

  . I think the first one indicates a problem and all must be reported as the redirection and designated. Is that correct and if so, how can this be done?

  Thank you

  Hello

  Does not serve a disabled state. If you do not disable spanning tree, it should allow. http://downloads.Dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_networking/esuprt_net_fxd_prt_swtchs/PowerConnect-7024_Reference%20Guide_en-us.PDF page 745

• How can I configure Spanning Tree

  Hello

  I have several core Dell passes using PowerConnect 6224 s most - these ink in my Cisco provider kit. We run several VLAN and have redundant links between stacked switches.

  I have read up on top of the tree covering weight and have the following tasks:

  1 map of the network - including the ID of the root bridge, root ports, roads blocked, age max and time of helo

  Once I made my analysis information, I don't know how to better optimize the covering tree config, so far I have:

  1. make sure RSTP is enabled on all switches
  2. make sure that all edge ports have spanning port configured fast shaft
  3. not declare spanning port fast shaft on the links between switches
  4 force speed and duplex settings on all ports to link between the switches (I guess that's because the auto negotiate takes more time?)

  I'm not sure is:
  1 can I use BPDU guard and if so, where?
  2 can I use root guard and if so, where?

  I read the informative article by Todd: http://en.community.dell.com/support-forums/network-switches/f/866/t/19465205.aspx

  But, I don't know where\whether I should to configure the options of guard - am happy to provide additional information as needed.

  Thank you

  Spanning Tree BPDU Guard is used to disable the port where a new device tries to enter the already

  existing STP topology. Thus the devices, which were originally not part of STP, are not allowed to

  influence the STP topology. If the Enable value, when a BPDU is received on a port of the tip, this port is disabled. Once the port has been disabled it requires manual intervention to be reactivated.

  Spanning Tree Root Guard is used to prevent change of the root of a Spanning Tree instance

  in an unexpected way. The priority of an ID of adjustable bridge to zero but another bridge with a low mac ID

  address could also set its priority to zero and take root.

  Both are defined globally on the switch. If you have any possibility of other network devices being plugged into the switch without your knowledge. It may be a good idea to these permits after that STP is configured on the network. That way if someone randomly connected network with STP on this device, it will not throw your network for a loop.

  Here are some good white pages on the tree covering weight

  www.Dell.com/.../app_note_13.pdf

  www.Dell.com/.../app_note_1.pdf

  www.Dell.com/.../pwcnt_MSTP_interoperability.pdf

  Thank you

• Reference Dell Spanning Tree PowerConnect 2748

  I had just a simple question on Spanning Tree. We have a network configuration and everything is already difficult to implement the tree covering weight on the powerconnect switches if you already have your network configuration is? is it a day all? A lot of configuration? Or just a simple turn on button?

  Sorry, the PowerConnect 27xx switches of the series DO NOT switch support the STP (Spanning Tree) Protocol.

• Prevent advertising outgoing packets Spanning tree

  Hello

  I have a switch 2960 with a workstation that is connected.

  The switchport is configured for the portfast and the BPDUguard is enabled on the default switch

  When I have wireshark information on the connected pc then I see a lot of STP packets from the switch.

  I would like to disable these messages because the information located in the capture packets can be abused by an attacker who has access to this workstation, for the configuration of protocols spanning-tree of the company information.

  Is it possible to disable the spanning tree information that is sent from the switch?

  concerning

  Jan

  You should be able to configure bpdufilter to stop it. The only problem is that effectively stop you stp on this port, which could be dangerous.

  Understanding of the functioning of PortFast BPDU filtering

  BPDU filtering allows to avoid transmitting BPDUS on active PortFast ports that are connected to an end system.  When you enable PortFast on the switch, protocols spanning tree ports place in State shipping immediately, instead of going through the listening and learning States of transfer.

  By default, the tree covering weight sends BPDUS of all ports PortFast is only enabled or not. BDPU filtering is on a per-switch basis; After you enable BPDU filtering, it applies to all active ports PortFast on the switch.

  HTH,
  John

  Please note all useful messages *.

• I'm using Adobe Photoshop 5.5 Windows XP & have no. SL. with me. Recently, I changed my Windows 7 operating system and tried on several occasions in compatible mode software is not downloading, is there another medium like patch etc, please suggest me

  I'm using Adobe Photoshop 5.5 Windows XP & have no. SL. with me. Recently, I changed my Windows 7 operating system and tried on several occasions in compatible mode software is not downloading, is there another medium like patch etc, please suggest me to solve the problem.

  as I know he never was a 5.5 ps, but something more old ps cs2 (version 9) is not likely to work on any modern operating system.

  You can use your old computer with them or try and install using compatibility mode or consider an updated version of the ps ($ 10 / month for lr and ps is the plan more economic that includes ps), plans, pricing and membership creative cloud | Adobe Creative Cloud

• SG100-24 Spanning Tree Protocol compatible?

  How the SG100-24 switch treats the STP Protocol?

  Hi Steve,.

  It will transmit messages to other participants STP BPDUS. Does not generate its own so you must be careful when adding to the network because it doesn't have a loop prevention mechanism.

  Kind regards

  Aleksandra

• Spanning tree of routing bridge

  Good day to all

  I have a problem in my network with an old device with a 10mbit half duplex nic - we have switches Powerconnect N3048 in basket - we found that they don't play well with the old device, so we added a 1000/100 old switch to do the translation so to speak.

  The problem now is that STP has not been configured in time and the older switch has taken the role of routing bridge.

  My question is - if I have now set up the N3048 be the bridge on the road, I'll be able to do without affecting the production network traffic, or do I need to down the network to make the change?  Will be the change of the switch N3048 force older to cede control, or they will fight?

  Thanks in advance

  Eric

  By default most of the switches will have a default priority of 32768. In this case, the switches, then use to determine MAC address which is the root device. If this is the case in this scenario, all you have to do is set a less important priority tree covering the desired root switch.

  On your central switch, issue the following command:

  console (config) #spanning 4096 tree priority

  This switch will become the root switch. Should not all switches to be restarted, but will cause a topology of notifications of changes throughout the network, and some ports may change their current status. It depends on the topology.

  I could do this during non peak hours. May also want to check the switch that you added to the network and make sure that it doesn't have a priority tree covering of 4096. If this is the case, set it to something higher.

• Airport Extreme 802. 11 b / g compatible mode does not work

  Have a strange problem occurred recently on my home network. Here's what I have.

  (1) Macbook Pro retina 2014 running 10.9.5 (must be this older OS for DAW/music applications)

  (2) Macbook Pro 2009 10.11.1 running

  (3) airport Extreme Base Station of 2nd generation

  (4) Airport Express A1264 (1st gen N) compatible

  (5) iPhone 4 s. IOS9.2.1

  (6) iPad 2 8.4

  (7) modem Netgear cable connected to Comcast

  I have my Airport Extreme Base Station 802.11n value (802. 11 b / g compatible) and the Airport Express to extend the wireless network. Appliances mentioned above connects to the Station Base or Airport Express, according to what it is without any problems, except for my Macbook Pro of the retina's nearest.

  It was not used to be a problem for the retina to connect to the network, it used to work every time but for some reason any in the past months, it is almost impossible to get the retina to connect to the network. At this point, the Base Station is less than 10 feet away from the retina and has a direct line of sight to it but the only way I can get to connect is by organizing the retina upward in the air on a dark corner and hope that it connects. As soon as I put it down again, the connection disappears.

  What is strange is however if I go to the utility Airport and change options on the Base Station to one of the other 3 options, only 802.11n wireless (2.4 ghz), compatible with 802. 11A or 802.11n only (5 ghz) and restart the retina connects very well. The problem is my iPhone will not see and network, so I can't leave on any of these other 3 options I need my phone connected to use Skype etc. (virtually no cellular reception where I live).

  It is a hardware problem at the level of the retina, something to do with the wireless antenna, or is IT a case of I need more recent material from the Base Station, a newer model that has more options?

  I tried following the instructions from another post here remove all the com.apple.airport.preferences.plist etc etc files in the Library/preferences/systemconfiguration folder on the retina and reboot in order to restore the plist files but it does nothing.

  Thanks in advance for any help/suggestions that anyone has to offer.

  Sean

  What stands out in your description is your AirPort Extreme 2nd generation base station. The typical lifecycle of networking hardware is Apple products around 5 years are in this group. The 2nd generation extreme was released in 2007 and stopped in March 2009... so yours is at less than 7 years.

  That said, I guess that your Extreme is to his "last breath" and I do not consider it to be reliable in the future. You're already thinking that maybe this is the reason, and I second that opinion. Maybe it's time to replace it instead of making any additional unnecessary troubleshooting.

• Spanning tree Distribution Switch Port is root for all the VLANS

  Hello world.

  Uplink to switch on 2 layer network flat if Distribution change a.

  This distribution uplink port is Root Port.

  Core switch port goes to the Distribution switch appears as State PLEASE FWD.

  It will cause slow for users who are connected to the network on the Distribution switch?

  According to my understanding core should be Root STP for all the right of VLAN?

  If necessary how can I make kernel as root port switch port?

  Thank you

  MAhesh

  Hello

  a root is a designated port (if shipping port) on a non-root bridgewhich a path root the lowest cost to the root bridge. So there is nothing unusual here, and your kernel needs to be done to root bridge if you run STP between distribution and kernel as you apparently.

  Kind regards.

  Alain

  Remember messages useful rate.

• LAG does not not after more Guide of switch Configuration for EqualLogic San steps in the document.

  We use the information provided in the following document: i.dell.com/.../dell-networking-n4000-series-switch-configuration-guide-for-equallogic-sans.pdf

  We have two switches of N4032F which are stacked and followed almost word for Word from this document.  We do not use DCB.  We are trying to set up a SHIFT and follow-up step 2.11 in the document, but it seems that the SHIFT does not work.

  Switch 1:

  serial interface fortygigabitethernet 1/1/1-2

  No spanning tree portfast

  active in mode channel-group 1

  Switch 2:

  interface series fortygigabitethernet 2/1/1-2

  No spanning tree portfast

  active in mode channel-group 2

  However, when it was discovered after changing these settings it shows them as being inactive.

  

  Can someone please help?

  Thank you

  Jeff

  Thanks for the additional information. When the switches are stacked, they act as a logical switch. Then when you plug with an OFFSET you are basically creating a loop and hook up a switch on himself. Desempilement switches and just use the OFFSET for the interconnection of the switch and you should see the GAL go active.