Uplink Fast and PVST

Is it possible to utilize the uplinkfast feature with the following setup.
Two core switches: Core switch 1 is the root bridge for vlans 2/3. Core switch 2 is the root bridge for vlans 4/5. These switches are trunked in a triangular topology with one access level switch which has vlans 2-5.
Is it possible to utilize uplinkfast on both uplinks from the access switch or is this feature designed fore Core switch 1 to be the rootbridge for vlans 2-5, leaving the second uplink from the access switch to Core switch 2 dormant until a failure?

Hi,
Yes u can use Uplinkfast as per ur requirement..
Uplinkfast is recommended only on Access switches, because whenever u enable uplinkfast on any switch it increases bridge priority of that switch to 49,152, prevents it to become root switch.
The port cost of access switch is also increased to 3000 making those ports as undesirable as paths to root switch for any downstream switches.
UPLINKFAST command is not allowed on root switch.
regards
aashish C

Similar Messages

Vpc and pvst+

How are vpc and pvst reconciled? Normally, a switch sends a BPDU toward the root bridge, but with vpc, both uplinks are supposed to be active....so what then? Does the STP secondary have to use the crisslink to send to the root?

"In any STP environment the root bridge is only so a loop free topology can be created. Once the network is stable it does not mean that all traffic must go via the root bridge. It can take the shortest path to the destination.
This doesn't just apply to Nexus, it is with all switches."
Without spending cycles over thinking this statement and trying to find a scenario that matches, let me concede that youre right, but this is not typical. In 99% of environemnts in a data center, you have a very typical multi-tiered architecture. You know...the usual stuff... access switches dual homed (typically, not always, I know) to a pair of distro switches that may or may not act as the L2/L3 boundary. The L3 boundary at distro is what Im thinking of now.
[EDIT - 10 minutes later] - Just thought of a scneario that describes what youre saying....an access switch dual homed to a pair of distros which are then uplinked to a pair of cores which act as root bridges for all the vlans as well as the L3 boundary. A host is hanging off of one of the distros. The frame will head in the direction of the root bridge in the core BUT get diverted to the distro switch that the host is connected to. [EDIT END]
"So lets say you had two access switches connected with vPCs to the Nexus pair. If a device on one access switch in vlan 10 sends a packet to another device in vlan 10 on the second switch then the access switch would pick one of the etherchannel ports, send it to one of the Nexus switches. Lets say this Nexus switch is not the STP root. The Nexus switch should then send it direct to the second access switch ie. no need to go via the root bridge. "
OK, what if the destination host is connected to the root bridge for vlan 10...you know, one of the vPC switches in the pair? The access switch may send the frame on one of its port channel ports to the non-root, BUT then the frame would have to traverse the crosslink, not because the root bridge is the root but because the final destination is connected to the root and is accessible to the non-root through the crosslink. Yes?
On the other hand, in a non-vPC setup, the frame would have gone to the root brodge immediately. The observation here is that there is an element of path inefficiency with vPC.

IPhone 4 battery drains really fast and phone gets really hot

I have an iPhone 4 and since November 15 my battery has been draining really fast and gets really hot when I use the phone. When I try to charge the phone with my computer it doesn't charge, but only charges with the wall hub. I have tried deleting the email accounts, deleting all apps, restoring with the backup, restoring without the backup, and still no luck. I went to the Apple store and they briefly looked at it and said it had water damage by looking at the water damage indicator in the charging port. They told me I needed to pay $150 for a new phone. I don't recall getting my phone getting wet and it seems to work fine except for the battery drain and the computer charging problem. iTunes still recognizes the phone. I thought it was a battery problem so I ordered a new battery and replaced it myself and the battery was still draining fast. When I had the phone open the other water damage indicators were still white (no water damage), it was just the charging port indicator that was red (water damaged). Also, when I charge my phone with the wall hub it charges very slowly. I have ran out of ideas and I could really use some suggestions. Thank you.

i looked on the right there is no solution to my problem.i charge my phone to 100% after 2 hours with no usage at all of the phone with 3G off with wifi off with all applications shut down all notifications and locations off battery goes down to 50% when it was running on the older ios never had this problem in my iphone.when will this problem solved

IOS 8.1 installed yesterday has spoilt my iPad 2! There are no keyboard, message or app sounds, performance is now sluggish, juddery and strange, battery is draining fast and it no longer security locks when put to sleep.

I am so cross because iOS 8.1 installed yesterday has ruined my iPad 2! There are now no keyboard, message or app sounds, performance is slow, juddery and strange, the battery is draining fast and the iPad no longer security locks when put to sleep. I have checked all the settings, done a number of resets and really wish I hadn't bothered and stayed with iOS 7 when it all worked like a dream. I thought that by waiting until 8.1, teething problems would have been fixed and I am just horrified that there is no going back! I am not the only iPad owner that has this set of problems so why didn't you warn us Apple! What are you going to do to help us? I do not want to be forced into buying a newer version of iPad because you broke this one!

In spite of the fact that you said you checked the settings, I still believe that you have system sounds muted.
System sounds can be muted and controlled two different ways. The screen lock rotation can be controlled in the same manner as well.
Settings>General>Use Side Switch to: Mute System sounds. If this option is selected, the switch on the side of the iPad above the volume rocker will mute system sounds.
If you choose Lock Screen Rotation, then the switch locks the screen. If the screen is locked, you will see a lock icon in the upper right corner next to the battery indicator gauge.
If you have the side switch set to lock screen rotation then the system sound control is in the control center if you are running iOS 7. Swipe up from the bottom of the screen to get to control center . Tap on the bell icon and system sounds will return.
If you have the side switch set to mute system sounds, then the screen lock can be accessed in the same manner as described above.
This support article from Apple explains how the side switch works.
http://support.apple.com/kb/HT4085
AS for your other issues, have you done any other troubleshooting like resetting your iPad, resetting all settings or doing a complete factory reset?

So I keep trying to sync music to my iPhone from iTunes, and whenever I select the album the sync goes by really fast and nothing goes onto my phone. Then when I click "On this iPhone" it shows the songs, but they're grey, and I can't click on them. Help?

So I keep trying to sync music to my iPhone from iTunes, and whenever I select the album the sync goes by really fast and nothing goes onto my phone. Then when I click "On this iPhone" it shows the songs, but they're grey, and I can't click on them. Help?

Ok, sorry. And yes, I just restored my iPhone as new and tried to put all the songs on there before I even restored with my previous backup, but it still does the same thing... even when I just checked the option to sync only "selected music or videos". How's that possible?
P.S. After I tried syncing with checked songs only, nothing showed up under Music on my phone and this message popped up in iTunes: "The iPhone "..." could not be synced because the sync session failed to finish." If you could, please tell me what that means, thanks.

Each time I start Firefox it says: "URGENT! Your version of Firefox is no longer protected against online attacks. Get the upgrade - it's fast and free!" I am using ver. 3.6.13 and upgrading "successfully" only stays on 3.6.13 with same URGENT message.

Each time I start Firefox it says:
"URGENT! Your version of Firefox is no longer protected against online attacks. Get the upgrade - it’s fast and free!"
I am using ver. 3.6.13 and upgrading "successfully" only stays on 3.6.13 with same URGENT message.

Your UserAgent string in Firefox is messed up and needs to be reset. 
[http://en.wikipedia.org/wiki/User_Agent]
type '''about:config''' in the URL bar and hit Enter 
''If you see the warning, you can confirm that you want to access that page.'' 
Filter ='''general.useragent.''' 
Right-click the preferences that are '''bold''', one line at a time, and select ''' ''Reset'' ''', 
Then restart Firefox

What is the best way to clean up your mac and make it faster and run to an optimum level?

Hi Everyone, Hope all is well
Iv been running my mac pro for a long time now, its a Mac pro, 2x 2.26 GHz Quad Core Intel Xeon. 12 GB 1066 MHz DDR3 Ram
Over time now it has become slower, at the moment its still running fine but im sure over time it has probabally collected unwanted data etc. i just dont want it to become a problem as its only going to be used more and more... i now notice that some of the regular programs which i open do take a little while longer to open and i sometimes see that little round Mac loading the sign (the round multicolor wheel).., is there a way to clean the mac up? so that it can run more smoothly and just a better over all feel.,,, the machine is still running beautifully but its time i give it more care and revive it a little more..
What are the best ways to do this, i dont trust any of these non apple based products which claim they can clean ur Mac etc.
Any solutaion and advice that u guys can give would be great and i would be very thankful
Thanks in advance

For immediate speed improvements, upgrade to a Solid State Drive and upgrade your conventional hard drives to new ones, because the newer ones are faster at reading and writing than the ones from 5 years ago.
By Re-installing your OS onto a solid state drive, the system will boot much faster, and your programs will launch much faster.
I use a small SSD (only 60GB) which contains only OS X and all my apps. All of my personal files are on the large mechanical hard drive. If you still use the drive that shipped with the Mac, then it might be a good idea to replace it.
Depending on what kind of work you do, then additional RAM will help. Swapping CPUs should only be done if you are really in need of the improvements they would bring.
You appear to have the 2009 dual-CPU Mac Pro, which is the most challenging model to swap CPUs into.

I m using apple mac pc, when we start windows 7 , apple mouse doesn't work properly it take to much time to gain signals from the pc and many times it not work but when we use mac it moves fastly and works properly. please suggest me. thanks ravi

i m using apple mac pc, when we start windows 7 , apple mouse doesn't work properly it take to much time to gain signals from the pc and many times it not work but when we use mac it moves fastly and works properly. please suggest me.
thanks
ravi
<Email removed by Host>

sounds more like Bluetooth rather than moue, but w/o knowing w/o posting mac model type/year we... will... not... know... what you have
All computers are personal computers, a PC though is also "non-Apple" in common usage.
Mac also is platform and OS.
Very confused reading what you are trying to tell us.

How to make powermac G4 400GHz faster and run smoother.

I really want to make my Power Mac G4 much faster and run smoother, can someone help me do this.
P.S. I'm running mac OS X 10.4.11 and I'm trying to install mac OS X 10.6 snow leopard will upgrading my OS help improve performance.

dragon,
First thing to do, and the cheapest, is more RAM. It's not cool to recommend retailers, etc....but you really want to get the right stuff. Macs can be finicky about RAM. You can get the right stuff in many places...IF you know what you're doing. That being said, most 'pros' here in Discussions recommend macsales.com (OWC) and crucial.com because you'll get the right stuff at decent prices. Both have memory 'advisors', where you type in your machine type and get recommendations for the correct memory. Do that yourself, even if you're not ready to buy today.
macsales.com has 512mb for about $30. Crucial wants $60; dunno why; they used to be comparable. One plan, on your limited budge, would be to get one 512mb stick; then save up and buy THE SAME product when you've saved up $30 more. I wouldn't mix. It can be done but you'll save yourself some grief just buying the same sticks from the same place. You'll see a pretty good improvement if you go to 1GB+.
You'll also see pretty good performance if you limit the number of apps you install, particularly "third party plugins". Keep your Mac lean and mean and it'll perform well for years. Be sure to run Permissions Repair EVERY TIME you install an app. I say this because that 60GB HD will fill up pretty fast. Maybe it'd be better just to get the one 512MB stick, giving you 1.5GB RAM. Then, save up for a bigger HDD. You'll need those two upgrades before even thinking of a CPU upgrade.
Get the free utility Macaroni and let it run daily, weekly, monthly tasks. Read thru other posts here in the 'Using ur PMac G4' and "Exanding ur PMac G4".
Please come back if you have any more questions. HTH

Hello, my Macbook now getting slow, how can I make it fast and fix it?

How to make my Macbook fast and kill the risks?

Things You Can Do To Resolve Slow Downs
If your computer seems to be running slower here are some things you can do:
Start with visits to: OS X Maintenance - MacAttorney;
                                  The X Lab: The X-FAQs;
                                  The Safe Mac » Mac Performance Guide;
                                  The Safe Mac » The myth of the dirty Mac;
                                  Mac maintenance Quick Assist.
Boot into Safe Mode then repair your hard drive and permissions:
Repair the Hard Drive and Permissions Pre-Lion/Mountain Lion
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
Repair the Hard Drive - Lion/Mountain Lion
Boot from your Lion Recovery HD. When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported, then click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Restart your computer normally and see if this has helped any. Next do some maintenance:
Suggestions for OS X Maintenance
For situations Disk Utility cannot handle the best third-party utility is Disk Warrior; DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption; Disk Warrior 4.x is now Intel Mac compatible.
OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) If this isn't the case, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep. Dependence upon third-party utilities to run the periodic maintenance scripts was significantly reduced since Tiger. These utilities have limited or no functionality with Snow Leopard or Lion and should not be installed.
OS X automatically defragments files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive. As for virus protection there are few if any such animals affecting OS X. You can protect the computer easily using the freeware Open Source virus protection software ClamXAV. Personally I would avoid most commercial anti-virus software because of their potential for causing problems. For more about malware see Macintosh Virus Guide.
I would also recommend downloading a utility such as TinkerTool System, OnyX 2.4.3, or Cocktail 5.1.1 that you can use for periodic maintenance such as removing old log files and archives, clearing caches, etc.
For emergency repairs install the freeware utility Applejack. If you cannot start up in OS X, you may be able to start in single-user mode from which you can run Applejack to do a whole set of repair and maintenance routines from the command line. Note that AppleJack 1.5 is required for Leopard. AppleJack 1.6 is compatible with Snow Leopard. There is no confirmation that this version also works with Lion.
When you install any new system software or updates be sure to repair the hard drive and permissions beforehand.
Get an external Firewire drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
     1. Carbon Copy Cloner
     2. Data Backup
     3. Deja Vu
     4. SuperDuper!
     5. SyncTwoFolders
     6. Synk Pro
     7. Synk Standard
     8. Tri-Backup
Visit The XLab FAQs and read the FAQs on maintenance, optimization, virus protection, and backup and restore.
Referenced software can be found at CNet Downloads or MacUpdate.
Additional Hints
Be sure you have an adequate amount of RAM installed for the number of applications you run concurrently. Be sure you leave a minimum of 10% of the hard drive's capacity as free space.
Add more RAM. If your computer has less than 2 GBs of RAM and you are using OS X Leopard or later, then you can do with more RAM. Snow Leopard and Lion work much better with 4 GBs of RAM than their system minimums. The more concurrent applications you tend to use the more RAM you should have.
Always maintain at least 15 GBs or 10% of your hard drive's capacity as free space, whichever is greater. OS X is frequently accessing your hard drive, so providing adequate free space will keep things from slowing down.
Check for applications that may be hogging the CPU:
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time, then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
Often this problem occurs because of a corrupted cache or preferences file or an attempt to write to a corrupted log file.

Image is to fast and the sound is played correctly..........

I have a JVC GY100 HD camera and I want to import material onto Imovies HD but every time I try the video play to fast and the sound play correctly. I have tried to change the frame rate but this doesn´t make a difference ...... Please help!!!!

It sounds like the Audiobook's playback speed was changed. You can change it by tapping the audio book artwork, locating the speed control that can be found under the right side of the scrubber bar. Then adjust as needed. The options as 1/2x, 1x, and 2x.
B-rock

When I play videos (on any website, using any browser) they play really fast and there is no sound.

When I play videos (on any website, using any browser) they play really fast and there is no sound.

http://forums.adobe.com/thread/1026022?tstart=0
https://bugbase.adobe.com/index.cfm?event=bug&id=3216334
https://bugbase.adobe.com/index.cfm?event=bug&id=3217331
https://bugbase.adobe.com/index.cfm?event=bug&id=3219780
https://bugbase.adobe.com/index.cfm?event=bug&id=3229264

If i plugged my ipod into my computer but unplugged it to fast and only 25 songs synced and i lost 100 of my songs, can i get those back somehow?

If I plugged my ipod into my computer and unplugged it to fast and only 25 songs synced onto the computer, then is there any way to get my lost 100 songs back?

Were these songs purchased from iTunes? If so,you can re-download content purchased from the iTunes store (availability varies depending on location) using the purchased option from the Quick Links section in the top right corner of the iTunes homepage in your iTunes application on your computer.
Hope this helps!
Cheers,
GB

Cisco ISE with EAP-FAST and PAC provisioning

Hi,
I have search with no result on this topic. So, Does anyone have implemented Cisco ISE authentication with EAP-FAST and PAC provisioning ?
Since I have an issue with internal proxy, user required to authenticate with an internal proxy before granting access to the internet.
If you have any documents, it would be appreciated for me.
Thanks,
Pongsatorn

From what I understand a Internet proxy PAC and a eap-fast PAC are two different purposes.
Is that what you are trying to get clarification on.
Basically eap fast PAC provisioning is a PAC that s provisioned when a client authenticates successfully. The client provides this PAC for network authentication and not proxy authentication.
Sent from Cisco Technical Support iPad App

Title in motion starts fast and ends slow... need to make it consistent across the motion. Deadline is very soon! help!

I made a title, and used the motion tool (position and scale) in effect controls to move it across the screen, while making it bigger. When I see the motion at hand, it starts very fast and ends very slowly... how do I edit the speed of that motion? working with Mac BTW. HELP

Control it with Key Frames.
If you have applied no KFs it should be linear (constant) already.

Uplink Fast and PVST

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