very simple.. a) it is on by default in CISCO Equipment b) it catches people by surprise, cause it does not output to logs as to what is going on. c) one can only see the status of a blocked port if one issues the stp command. but the biggest one is...
d) Cisco switches will react to STP messages being broadcast from a totally different section of a connected network... ! so, simply by the virtue of 'Cisco of Right' and they have the highest quantity of switches deployed in the field... and this is one of the biggest gotchas, when the folks experience it..... they (cisco) automatically gets the brunt of the black eye !.... No one starts a story with .. " Let me tell you how I made a mistake...." but the story always starts with .." Ahhh what a POS, let me tell you what I had to endure due to this POS ! ". :) Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net > From: "Ken Hohhof" <af...@kwisp.com> > To: af@afmug.com > Sent: Tuesday, October 25, 2016 6:18:21 PM > Subject: Re: [AFMUG] stp > 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] On Behalf Of Carlos Alcantar > Sent: Tuesday, October 25, 2016 4:58 PM > To: 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 / http://www.race.com > From: Af < af-boun...@afmug.com > on behalf of Josh Reynolds < > j...@kyneticwifi.com > > Sent: Tuesday, October 25, 2016 2:38:04 PM > To: 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 > 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 > 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 > 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 >>>>>> 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 > 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 >>>>>>> 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 >>>>>>> Direct: 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 > >>>>>>> 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 >>>>>>>> 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 > >>>>>>>>> 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
