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@leon.pl]
Sent: lundi 22 février 2010 19:54
To: Fabian
Cc: extreme-nsp@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@puck.nether.net
> [mailto:extreme-nsp-bounces@puck.nether.net] On Behalf Of Marcin Kuczera
> Sent: dimanche 21 février 2010 21:35
> To: extreme-nsp@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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> extreme-nsp@puck.nether.net
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>
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