[e-nsp] stacking with 2 switches.

[Fabian]

Marcin,

Blocked Port is only for Unknow/Bcast traffic. Unicast/Mcast use both ports.

You can find some info in the Concept Guide :

On Stack Port 1 where Blocked Port = Yes indicates on the stacking backplane
in which a vlan is extended across both or more than one switch in a stack,
broadcast / unknown packets will be blocked on that port to prevent a loop
across the stacking backplane. Unicast /  known traffic will be eligible to
use either port since packet forwarding would occur on only one of the
ports. Multicast traffic behaves in a similar pattern but the port to be
blocked will be based on the multicast group number in attempt to evenly
distribute blocked ports per multicast group across the switches in a stack.
For VLANs, the switch with the lowest MAC Address will block one of its
ports.

Fabian.

-----Original Message-----
From: Marcin Kuczera [mailto:marcin at leon.pl] 
Sent: lundi 22 février 2010 19:54
To: Fabian
Cc: extreme-nsp at puck.nether.net
Subject: Re: [e-nsp] stacking with 2 switches.

Fabian wrote:
> Hi Marcin,
> 
> Did you enable the stacking on both X650?

yes, I did.

Slot-1 SummitStack-GZE.1 # show stacking
Stack Topology is a Ring
Active Topology is a Ring
Node MAC Address    Slot  Stack State  Role     Flags
------------------  ----  -----------  -------  ---
*00:04:96:36:c5:65  1     Active       Master   CA-
  00:04:96:36:c5:71  2     Active       Backup   CA-
* - Indicates this node
Flags:  (C) Candidate for this active topology, (A) Active Node
         (O) node may be in Other active topology
Slot-1 SummitStack-GZE.2 #

Slot-1 SummitStack-GZE.2 # show stacking detail
Stacking Node 00:04:96:36:c5:65 information:
    Current:
       Stacking                  : Enabled
       Role                      : Master
       Priority                  : Automatic
       Slot number               : 1
       Stack state               : Active
       Master capable?           : Yes
       License level restriction : <none>
       In active topology?       : Yes
       Factory MAC address       : 00:04:96:36:c5:65
       Stack MAC address         : 02:04:96:36:c5:65
       Alternate IP address      : <none>
       Alternate gateway         : <none>
       Stack Port 1:
          State                  : Operational
          Blocked?               : Yes
          Control path active?   : Yes
       Stack Port 2:
          State                  : Operational
          Blocked?               : No
          Control path active?   : Yes
    Configured:
       Stacking                  : Enabled
       Master capable?           : Yes
       Slot number               : 1
       Stack MAC address         : 02:04:96:36:c5:65
       License level restriction : <none>

Stacking Node 00:04:96:36:c5:71 information:
    Current:
       Stacking                  : Enabled
       Role                      : Backup
       Priority                  : Automatic
       Slot number               : 2
       Stack state               : Active
       Master capable?           : Yes
       License level restriction : <none>
       In active topology?       : Yes
       Factory MAC address       : 00:04:96:36:c5:71
       Stack MAC address         : 02:04:96:36:c5:65
       Alternate IP address      : <none>
       Alternate gateway         : <none>
       Stack Port 1:
          State                  : Operational
          Blocked?               : Yes
          Control path active?   : Yes
       Stack Port 2:
          State                  : Operational
          Blocked?               : No
          Control path active?   : Yes
    Configured:
       Stacking                  : Enabled
       Master capable?           : Yes
       Slot number               : 2
       Stack MAC address         : 02:04:96:36:c5:65
       License level restriction : <none>
Slot-1 SummitStack-GZE.3 #

Regards,
Marcin




> Fabian.
> 
> -----Original Message-----
> From: extreme-nsp-bounces at puck.nether.net
> [mailto:extreme-nsp-bounces at puck.nether.net] On Behalf Of Marcin Kuczera
> Sent: dimanche 21 février 2010 21:35
> To: extreme-nsp at puck.nether.net
> Subject: [e-nsp] stacking with 2 switches.
> 
> hello,
> 
> I have 2x Summit X650 switch connected with standard stack VIM
(2x10Gbit/s).
> 
> But..
>        Stack Port 1:
>           State                  : Operational
>           Blocked?               : Yes
>           Control path active?   : Yes
>        Stack Port 2:
>           State                  : Operational
>           Blocked?               : No
>           Control path active?   : Yes
> 
> It seems that only one cable can be used at a time, so there is maximum 
> of 10Gbit/s throughput between 2 switches no matter if there is only one 
> or both cables..
> Is it true ?
> 
> Regards,
> Marcin
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