topic Re: Disable MSTP and enable RSTP on X440 in EXOS 22.2 in ExtremeSwitching (EXOS/Switch Engine)

Disable MSTP and enable RSTP on X440 in EXOS 22.2

Leeladhar_Borra — Sat, 25 May 2019 22:39:01 GMT

We have X440 switch , these were previously configured for RSTP, we did factory reset and it got MSTP enabled.
How can i configure to convert to RSTP enable.

Re: Disable MSTP and enable RSTP on X440 in EXOS 22.2

Tomasz — Sat, 25 May 2019 23:08:21 GMT

Hi Leeladhar,

You can do 'show config' and 'show stp' to see what's going on currently, but in general you might want to simply transition with your STP config to RSTP shape, like in the example here:

code:

create stpd stpd1
configure stpd stpd1 mode dot1w #this tells that domain is RSTP
configure stpd stpd1 add vlan sales ports all
configure stpd stpd1 add vlan personnel ports all
configure stpd stpd1 add vlan marketing ports all
configure stpd stpd1 ports link-type point-to-point 1:1,2:1
configure stpd stpd1 tag 100 #this specifies the carrier VLAN used for BPDU traversal (here sales has this ID)
enable stpd stpd1

Actually STP domain mode is the most essential to determine if we use RSTP or MSTP but take care, STP/RSTP uses carrier VLAN here, and MSTP doesn't, but it uses CIST and MSTIs.

Let us know if that suits you or do you need some more guidance here. 🙂

Hope that helps,
Tomasz

Re: Disable MSTP and enable RSTP on X440 in EXOS 22.2

Leeladhar_Borra — Sun, 26 May 2019 10:26:36 GMT

Hi Thomasz,
Thanks for your immediate response. I will verify and come back.
Just for your info, we are having X440 with firmware version 22.3.1.4. While rebooting it gave error
(!!! Note: Spanning Tree default changed in ExtremeXOS 22.2 !!!
Multiple spanning Tree Protocol (MSTP) is enabled by default to prevent broadcast storms)
Will it happen everytime i reset to factory defaults using "Unconfigure config all" ? How to avoid this in future.

we have previous tested configuration and after reset and i am downloading same configuration
following lines are failing with error.

configure stpd s0 mode dot1w

ERROR: Domain S0 is enabled, disable it before mode change.

enable stpd s0 rapid-root-failover

ERROR: Rapid Root failover cannot be configured for MSTP domains.

Thanks for your support
-Leeladhar