Switching

Hi guys,

I am trying to setup an interface (ge-1/1/5) in multiple logical-systems. I want to enable MSTP on the interface in all logical-systems as well. I am getting this error message:

lab@labmx01# commit check
error: STP for interface ge-1/1/5.2 must be configured within the routing-instance mstp-test/default. Currently its con
figured as part of instance default. This is incorrect.
error: configuration check-out failed

I dont know if i can setup the same interface in multiple LS with MSTP. If yes, how to go about that.

My Config:

------------

lab@labmx01# show interfaces ge-1/1/5
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
unit 0 {
    family bridge {
        interface-mode trunk;
        vlan-id-list 222;
    }
}

lab@labmx01# show bridge-domains
MSTP-TEST {
    vlan-id 222;
    routing-interface irb.222;
}

                              
lab@labmx01# show protocols mstp
configuration-name MST2;
revision-level 1;
interface ge-1/1/5;
msti 1 {
    vlan  222;
    vlan  223;
}


lab@labmx01# show logical-systems mstp-test interfaces ge-1/1/5
unit 2 {
    vlan-id 223;
}

lab@labmx01# show logical-systems mstp-test bridge-domains             
vlan-223 {
    vlan-id 223;
    interface ge-1/1/5.2;
}

                                                        
lab@labmx01# show logical-systems mstp-test protocols mstp                                
configuration-name MST2;
revision-level 1;
interface ge-1/1/5;
msti 1 {
    vlan 222;
    vlan 223;

You cannot use the same interface in both MSTP(LS and default instance):

[edit]
root@MX960-re0# run show version | match "boot|Model"
Model: mx960
JUNOS Base OS boot [12.3R6.6]

[edit]
root@MX960-re0# commit check
re0:
[edit logical-systems mstp-test interfaces ge-1/1/5]
'unit 2'
Interface ge-1/1/5.2 is also configured at the top-level
[edit logical-systems mstp-test protocols mstp]
'interface ge-1/1/5'
L2CPD : xSTP is already enabled on interface ge-1/1/5 in another routing instance "default"
error: configuration check-out failed

[edit]
root@MX960-re0#

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If this worked for you please flag my post as an "Accepted Solution" so others can benefit. A kudo would be cool if you think I earned it.

Great. thanks for confirming this.

I will be using vstp instead. That has worked before for us, given that vstp for each vlan is independent from others.