# STP Dispute
**URL:** https://forum.networklessons.com/t/stp-dispute/2176
**Category:** Lessons Discussion
**Created:** [September 13, 2017, 1:21pm UTC](https://forum.networklessons.com/t/stp-dispute/2176 "2017-09-13T13:21:35Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)
#### Post date: [September 13, 2017, 1:21pm UTC](https://forum.networklessons.com/t/stp-dispute/2176/1 "2017-09-13T13:21:35Z")
This topic is to discuss the following lesson:
[https://networklessons.com/cisco/ccie-enterprise-infrastructurestp-dispute/](https://networklessons.com/cisco/ccie-enterprise-infrastructurestp-dispute/)
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### Author:  [@sims](https://forum.networklessons.com/u/sims)
#### Post date: [November 3, 2017, 10:09am UTC](https://forum.networklessons.com/t/stp-dispute/2176/2 "2017-11-03T10:09:03Z")
Hi,
Cisco virl is must for this lab ?
Which image you are using for this switch
Thanks
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### Author:  [@sims](https://forum.networklessons.com/u/sims)
#### Post date: [November 4, 2017, 5:55pm UTC](https://forum.networklessons.com/t/stp-dispute/2176/3 "2017-11-04T17:55:30Z")
Hi,
What is this mac ‘0180.c200.0000’
Thanks
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### Author:  [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [November 6, 2017, 6:57am UTC](https://forum.networklessons.com/t/stp-dispute/2176/4 "2017-11-06T06:57:34Z")
Hello Sims
All 802.1q traffic (spanning tree traffic) is destined for the 0180.c200.0000 multicast MAC address. If this is blocked, then STP traffic will be blocked.
I hope this has been helpful!
Laz
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### Author:  [@mohit4s](https://forum.networklessons.com/u/mohit4s)
#### Post date: [January 23, 2020, 7:01pm UTC](https://forum.networklessons.com/t/stp-dispute/2176/5 "2020-01-23T19:01:34Z")
So its a In-build Feature or Mechanism right - We don’t enable them ?
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### Author:  [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [January 24, 2020, 9:25am UTC](https://forum.networklessons.com/t/stp-dispute/2176/6 "2020-01-24T09:25:15Z")
Hello Mohit
Yes, STP Dispute is a built in feature, and requires no configuration. Actually, it cannot even be disabled.
I hope this has been helpful!
Laz
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### Author:  [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)
#### Post date: [June 1, 2020, 6:57pm UTC](https://forum.networklessons.com/t/stp-dispute/2176/7 "2020-06-01T18:57:10Z")
A post was merged into an existing topic: [Multiple Spanning Tree (MST)](https://forum.networklessons.com/t/multiple-spanning-tree-mst/1101/51)
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### Author:  [@kansangeeth](https://forum.networklessons.com/u/kansangeeth)
#### Post date: [March 27, 2023, 8:35am UTC](https://forum.networklessons.com/t/stp-dispute/2176/8 "2023-03-27T08:35:37Z")
Does this only works with RSTP?
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### Author:  [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [March 29, 2023, 5:18am UTC](https://forum.networklessons.com/t/stp-dispute/2176/9 "2023-03-29T05:18:15Z")
Hello Nipun
There is astonishingly little information in any Cisco documentation about the STP dispute mechanism, and unfortunately, I don’t have a definitive answer for you. The STP dispute mechanism is definitely part of PVST+ as well as RSTP, and consequently MST (since it is based on RSTP), but I haven’t been able to find information about the existence of the mechanism on standard 802.1D STP. in any case, the point is moot because 802.1D is rarely used, and indeed is not supported on many modern switches.
Typically PVST is the default type of STP that runs on modern Cisco switches, with the option to run one of the following types:
```auto
SW1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
SW1(config)#spanning-tree mode ?
mst Multiple spanning tree mode
pvst Per-Vlan spanning tree mode
rapid-pvst Per-Vlan rapid spanning tree mode
SW1(config)#spanning-tree mode
```
I apologize for not being able to give you more details about this, I wish I could have given you a me definitive answer.
I hope this has been helpful!
Laz