Switching

Hi I am unable to add EX4300 to an MSTP instance. The relevant configuration as below.

Root Bridge 

set protocols mstp configuration-name test
set protocols mstp revision-level 1
set protocols mstp bridge-priority 4k
set protocols mstp interface ge-0/0/0 cost 10000
set protocols mstp interface ge-0/0/0 mode point-to-point
set protocols mstp interface ge-0/0/2 cost 12000
set protocols mstp interface ge-0/0/2 mode point-to-point
set protocols mstp interface ge-0/0/3 cost 14000
set protocols mstp interface ge-0/0/3 mode point-to-point
set protocols mstp msti 1 bridge-priority 4k
set protocols mstp msti 1 vlan 310
set protocols mstp msti 1 vlan 1024
set protocols mstp msti 1 interface ge-0/0/0 cost 14000
set protocols mstp msti 1 interface ge-0/0/2 cost 15000
set protocols mstp msti 1 interface ge-0/0/3 cost 16000

Non Root Bridge

set protocols mstp configuration-name test
set protocols mstp revision-level 1
set protocols mstp bridge-priority 36k
set protocols mstp interface ge-0/0/5 edge
set protocols mstp interface ge-0/0/5 no-root-port
set protocols mstp interface ge-0/0/46 cost 10000
set protocols mstp interface ge-0/0/46 mode point-to-point
set protocols mstp interface ge-0/0/47 cost 12000
set protocols mstp interface ge-0/0/47 mode point-to-point
set protocols mstp msti 1 bridge-priority 36k
set protocols mstp msti 1 vlan 310
set protocols mstp msti 1 interface ge-0/0/46 cost 10000
set protocols mstp msti 1 interface ge-0/0/47 cost 12000

Hello,

Please have the non root-bridge vlan 1024 added in msti 1.

eeskiyen is correct.  MSTP requires that the following be the same on all switches participating in the MSTP:

name

revision level

VLAN-to-Instance mappings

If these parameters do not match, then the switches become MSTP in two separate regions.  Here is a good reference with some logical design examples.  It's Cisco-centric, but the concepts are still the same:

http://blog.ine.com/2010/02/22/understanding-mstp/

working now. 

Thanks