VSTP: EX4300

Hello Experts,

I have configured two EX4300 switch with two VLANs. I noticed that a port is getting blocked by RSTP even though there is no loop in the network. There was only one connection between the switches. SW1<VLAN 999>  (blocked)-------- <VLAN 999> SW2. The switches have connection on default VLANs as well.

I found RSTP just run one instance of STP and its not per VLAN. So I  enabled the VSTP on VLAN 999 ports and it solved my problem.

But I don't see those ports in STP commands, can anyone tell me what is the proprer way to check it?

user@EX4300> show spanning-tree bridge   ----> I still see only one instance
STP bridge parameters 
Routing instance name               : GLOBAL
Context ID                          : 0
Enabled protocol                    : RSTP
  Root ID                           : 20481.b4:14:89:60:bd:c0
  Root cost                         : 20003
  Root port                         : ge-0/0/23
  Hello time                        : 2 seconds
  Maximum age                       : 20 seconds
  Forward delay                     : 15 seconds
  Message age                       : 2 
  Number of topology changes        : 38
  Time since last topology change   : 78097 seconds
  Local parameters 
    Bridge ID                       : 32768.d0:07:ca:52:de:00
    Extended system ID              : 0

{master:0}
user@EX4300> show spanning-tree interface 

Spanning tree interface parameters for instance 0

Interface    Port ID    Designated      Designated         Port    State  Role
                         port ID        bridge ID          Cost
ge-0/0/0       128:490      128:490  32768.d007ca52de00     20000  BLK    DIS  
ge-0/0/1       128:491      128:491  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/2       128:492      128:492  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/3       128:493      128:493  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/4       128:494      128:494  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/5       128:495      128:495  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/6       128:496      128:496  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/7       128:497      128:497  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/8       128:498      128:498  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/9       128:499      128:499  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/11      128:501      128:501  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/12      128:502      128:502  32768.d007ca52de00     20000  FWD    DESG 
ge-0/0/13      128:503      128:503  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/14      128:504      128:504  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/15      128:505      128:505  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/16      128:506      128:506  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/18      128:508      128:508  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/19      128:509      128:509  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/20      128:510      128:510  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/21      128:511      128:511  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/22      128:512      128:512  32768.d007ca52de00  200000000 BLK    DIS  
ge-0/0/23      128:513      128:129  32769.0015f9607500     20000  FWD    ROOT 

{master:0}

user@EX4300> show configuration protocols rstp  
interface ge-0/0/0;
interface ge-0/0/1;
interface ge-0/0/2;
interface ge-0/0/3;
interface ge-0/0/4;
interface ge-0/0/5;
interface ge-0/0/6;
interface ge-0/0/7;
interface ge-0/0/8;
interface ge-0/0/9;
interface ge-0/0/11;
interface ge-0/0/12;
interface ge-0/0/13;
interface ge-0/0/14;
interface ge-0/0/15;
interface ge-0/0/16;
interface ge-0/0/17;
interface ge-0/0/18;
interface ge-0/0/19;
interface ge-0/0/20;
interface ge-0/0/21;
interface ge-0/0/22;
interface ge-0/0/23;
interface ge-0/2/0;
interface xe-0/2/0;
interface ge-0/2/1;
interface xe-0/2/1;
interface ge-0/2/2;
interface xe-0/2/2;
interface ge-0/2/3;
interface xe-0/2/3;

{master:0}
user@EX4300> show configuration protocols vstp    interface ge-0/0/10;

{master:0}
user@EX4300>