Mainly because most people don’t understand STP so they leave it on and when something happens they are puzzled …. or they’ve read somewhere that it’s evil and turn it off, experience a “melt down” and think you have to have it enabled.
STP is a very important and useful protocol in layer2 networks …. it’s like other protocols - you should understand them and how they work CDP is same way .. LDP/LLDP another …. My personal favourite is folks who don’t set a root bridge in STP, especially corporate environments :) > On Oct 25, 2016, at 6:18 PM, Ken Hohhof <af...@kwisp.com> wrote: > > Why do people act like STP is some evil proprietary Cisco thing? If you > don’t want it, turn if off, but don’t make it sound like Cisco pulled it out > of their ass, it’s a perfectly standard Layer 2 protocol. > > CDP you can yell at Cisco (although Mikrotik supports it). Certain VLAN > error messages you can yell at Cisco. > > <> > From: Af [mailto:af-boun...@afmug.com <mailto:af-boun...@afmug.com>] On > Behalf Of Carlos Alcantar > Sent: Tuesday, October 25, 2016 4:58 PM > To: af@afmug.com <mailto:af@afmug.com> > Subject: Re: [AFMUG] stp > > on the access side where you might have issues with stp is if your customer > is then connecting to a cisco switch these stp messages between equipment can > get funny and start shutting off ports because one side supports it and the > other doesn't. you'll go crazy locating these issues. > > > > Carlos Alcantar > Race Communications / Race Team Member > 1325 Howard Ave. #604, Burlingame, CA. 94010 > Phone: +1 415 376 3314 / car...@race.com <mailto:car...@race.com> / > http://www.race.com <http://www.race.com/> > > From: Af <af-boun...@afmug.com <mailto:af-boun...@afmug.com>> on behalf of > Josh Reynolds <j...@kyneticwifi.com <mailto:j...@kyneticwifi.com>> > Sent: Tuesday, October 25, 2016 2:38:04 PM > To: af@afmug.com <mailto:af@afmug.com> > Subject: Re: [AFMUG] stp > > You veered way off into something I wasn't even talking about. > There's nothing wrong with a loop protect on an access port, but since its > not an official standard, there will be variances in loop detection algorithm > quality and design between vendors. YMMV. > That said, there's nothing wrong with STP on access ports either. > > On Oct 25, 2016 4:27 PM, "George Skorup" <geo...@cbcast.com > <mailto:geo...@cbcast.com>> wrote: >> Care to explain? What's wrong with simple loop-protect on an edge port >> facing a dumb customer? >> >> On 10/25/2016 3:07 PM, Josh Reynolds wrote: >>> *facepalm* >>> >>> On Oct 25, 2016 3:06 PM, "George Skorup" <geo...@cbcast.com >>> <mailto:geo...@cbcast.com>> wrote: >>>> Lots of switch vendors and even MikroTik (in the 6.37 branch, IIRC) >>>> support loop protection. If all you care about is stopping a loop, then >>>> use that. Use STP if you need its functionality. >>>> >>>> On 10/25/2016 1:16 PM, Josh Reynolds wrote: >>>>> If one of the ports has a loop, it will block only that port. Obviously, >>>>> disable STP on uplinks. >>>>> >>>>> On Oct 25, 2016 1:08 PM, "Chuck McCown" <ch...@wbmfg.com >>>>> <mailto:ch...@wbmfg.com>> wrote: >>>>>> But if you only have one upstream connection and you fall, it isn’t >>>>>> going to do anything, right? >>>>>> >>>>>> From: Josh Reynolds >>>>>> Sent: Tuesday, October 25, 2016 12:01 PM >>>>>> To: af@afmug.com <mailto:af@afmug.com> >>>>>> Subject: Re: [AFMUG] stp >>>>>> >>>>>> STP is a safety net. Its not doing much unless you fall. >>>>>> >>>>>> On Oct 25, 2016 12:44 PM, "Chuck McCown" <ch...@wbmfg.com >>>>>> <mailto:ch...@wbmfg.com>> wrote: >>>>>>> How can STP being enabled help anything if you are not using it? >>>>>>> >>>>>>> From: Josh Luthman >>>>>>> Sent: Tuesday, October 25, 2016 10:10 AM >>>>>>> To: af@afmug.com <mailto:af@afmug.com> >>>>>>> Subject: Re: [AFMUG] stp >>>>>>> >>>>>>> I just learned the other day thanks to Steve the Mikrotik software >>>>>>> bridges are (R?) STP by default. >>>>>>> >>>>>>> >>>>>>> Josh Luthman >>>>>>> Office: 937-552-2340 <tel:937-552-2340> >>>>>>> Direct: 937-552-2343 <tel:937-552-2343> >>>>>>> 1100 Wayne St >>>>>>> Suite 1337 >>>>>>> Troy, OH 45373 >>>>>>> >>>>>>> On Tue, Oct 25, 2016 at 12:07 PM, Bill Prince <part15...@gmail.com >>>>>>> <mailto:part15...@gmail.com>> wrote: >>>>>>>> Actually Netonix (one t, no r). I don't know that I would leave it on, >>>>>>>> but I don't know how you're using it. >>>>>>>>> https://www.netonix.com/wisp-switch.html >>>>>>>>> <https://www.netonix.com/wisp-switch.html>bp >>>>>>>> <part15sbs{at}gmail{dot}com> >>>>>>>> >>>>>>>> On 10/25/2016 9:04 AM, Josh Reynolds wrote: >>>>>>>>> Nettonix. >>>>>>>>> You could always leave it on... If your access network is layer2 up >>>>>>>>> to that switch, it could help. >>>>>>>>> >>>>>>>>> On Oct 25, 2016 11:03 AM, "CBB - Jay Fuller" >>>>>>>>> <par...@cyberbroadband.net <mailto:par...@cyberbroadband.net>> wrote: >>>>>>>>>> >>>>>>>>>> just discovered on one of our nettronix switches spanning tree >>>>>>>>>> protocol was enabled. >>>>>>>>>> we've run this switch probably four months - no real side effects - >>>>>>>>>> but i don't run stp anywhere >>>>>>>>>> else. any reason to leave this on? >>>>>>>>>> >>>>>>>>>> thanks
