Switching

Hi 

can i run both MSTP and RTG on the EX4300 switch configured in a vurtual chassis.

regards

Tayyab

Yes, you can do this, but you need to disable MSTP on the links on which RTG is configured. Otherwise, you will get a warning message:

{master:3}[edit]
root@EX4300-VC# show switch-options
redundant-trunk-group {
    group rtg0 {
        preempt-cutover-timer 60;
        interface ge-0/0/2.0 {
            primary;
        }
        interface ge-1/0/34.0;
    }
}

{master:3}[edit]
root@EX4300-VC# show protocols mstp
bridge-priority 4k;
interface ge-0/0/2;
interface ge-1/0/34;

{master:3}[edit]
root@EX4300-VC# commit
[edit switch-options]
  'redundant-trunk-group'
    RTG: RTG and mstp can not be enabled on the same interface ge-0/0/2
error: configuration check-out failed

{master:3}[edit]
root@EX4300-VC# run show version | match Model
Model: ex4300-48p
Model: ex4300-48p
Model: ex4300-48t
Model: ex4300-48t

{master:3}[edit]
root@EX4300-VC#

xSTP disable is specific to RTG interface and not global on the switch.

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Hi

Your configuration committed or commit checked out.  

Did not commit.


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Please more clarification required.

Can you be more specific? What clarifications are looking for?

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what is the status of run show spanning-tree interface output. On an EX4200 the disbled port is show as disabled as the case below for ge-0/0/18. What is the behavior on EX4300...

admin@EX4200-1# run show spanning-tree interface

Spanning tree interface parameters for instance 0

Interface Port ID Designated Designated Port State Role
port ID bridge ID Cost
ae0.0 128:1 128:1 4096.2c6bf59b5181 20000 FWD DESG
ae1.0 128:2 128:2 4096.2c6bf59b5181 20000 FWD DESG
ae2.0 128:3 128:3 4096.2c6bf59b5181 20000 FWD DESG
ge-0/0/18.0 128:531 128:531 4096.2c6bf59b5181 20000 DIS DIS

Spanning tree interface parameters for instance 1

Interface Port ID Designated Designated Port State Role
port ID bridge ID Cost
ae0.0 128:1 128:1 4097.2c6bf59b5181 20000 FWD DESG
ae1.0 128:2 128:2 4097.2c6bf59b5181 20000 FWD DESG
ae2.0 128:3 128:3 4097.2c6bf59b5181 20000 FWD DESG
ge-0/0/18.0 128:531 128:531 4097.2c6bf59b5181 20000 DIS DIS

Keep in mind that there is different output/behavior on platforms with ELS(like EX4300).

I enabled MSTP on a random interface. On ELS, you need to put the interfaces one by one, to enable xSTP.

{master:3}[edit]
root@EX4300-VC# show switch-options
redundant-trunk-group {
    group rtg0 {
        preempt-cutover-timer 60;
        interface ge-0/0/2.0 {
            primary;
        }
        interface ge-1/0/34.0;
    }
}

{master:3}[edit]
root@EX4300-VC# show protocols mstp
configuration-name MSTP-1;
revision-level 1;
interface ge-1/0/47;
msti 1 {
    vlan 101;
}

{master:3}[edit]
root@EX4300-VC# run 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-1/0/47      128:491      128:491  32768.f4b52f410701     20000  FWD    DESG

{master:3}[edit]
root@EX4300-VC#

The interfaces that are part of RTG, are not listed as running xSTP.

As a side note, in case you enable MSTP on a VLAN where the RTG links are part of, then you will get an error on commit:

{master:3}[edit]
root@EX4300-VC# show interfaces ge-1/0/47
unit 0 {
    family ethernet-switching {
        vlan {
            members Internet;
        }
    }
}

{master:3}[edit]
root@EX4300-VC# show interfaces ge-0/0/2
unit 0 {
    family ethernet-switching {
        vlan {
            members Internet;
        }
    }
}

{master:3}[edit]
root@EX4300-VC# show interfaces ge-1/0/34
unit 0 {
    family ethernet-switching {
        vlan {
            members Internet;
        }
    }
}

{master:3}[edit]
root@EX4300-VC#

{master:3}[edit]
root@EX4300-VC# show switch-options
redundant-trunk-group {
    group rtg0 {
        preempt-cutover-timer 60;
        interface ge-0/0/2.0 {
            primary;
        }
        interface ge-1/0/34.0;
    }
}

{master:3}[edit]
root@EX4300-VC# show protocols mstp
configuration-name MSTP-1;
revision-level 1;
interface ge-1/0/47;
msti 1 {
    vlan 201;
}

{master:3}[edit]
root@EX4300-VC# show interfaces ge-1/0/47
unit 0 {
    family ethernet-switching {
        vlan {
            members Internet;
        }
    }
}

{master:3}[edit]
root@EX4300-VC# commit check
[edit switch-options]
  'redundant-trunk-group'
    RTG : MSTP is enabled for vlan id 201
error: configuration check-out failed

{master:3}[edit]
root@EX4300-VC#

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