From: Hal Rosenstock <hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
To: Gandalf Corvotempesta
<gandalf.corvotempesta-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Dual star topology
Date: Wed, 24 Jul 2013 14:04:20 -0400 [thread overview]
Message-ID: <51F01724.7010504@dev.mellanox.co.il> (raw)
In-Reply-To: <CAJH6TXipMaLMcwuBbR+Jvb3KueZ1gBW7ohcb5Ke8ixO1bCEWAw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Hi Gandalf,
On 7/24/2013 11:20 AM, Gandalf Corvotempesta wrote:
> Hi to all
> i'm probably OT but I don't know where to ask
> I'm searching for some advice creating a dual-star topology to get
> full path redundancy.
> I have one dual-port DDR card on each server and two switches.
> I'll connect one port to each switch, but should I also interconnect
> both switches like in a standard ethernet network ?
The most fully redundant model would be to _not_ interconnect the 2
switches so it's 2 IB subnets rather than a single subnet. This means
you need at least 1 SM on each subnet (with different subnet prefix) but
you might want more if you're worried about some SM failing and not
having an SM on that subnet.
-- Hal
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next prev parent reply other threads:[~2013-07-24 18:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-24 15:20 Dual star topology Gandalf Corvotempesta
[not found] ` <CAJH6TXipMaLMcwuBbR+Jvb3KueZ1gBW7ohcb5Ke8ixO1bCEWAw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-24 18:04 ` Hal Rosenstock [this message]
[not found] ` <CAJH6TXgJGALyCcyPo+GvAninXQkZ+Md8c0NPmi_PUoU4XKDUHA@mail.gmail.com>
[not found] ` <CAJH6TXgJGALyCcyPo+GvAninXQkZ+Md8c0NPmi_PUoU4XKDUHA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-24 20:51 ` Fwd: " Gandalf Corvotempesta
[not found] ` <CAJH6TXjYW8w=RafoXgFiYNcFHc8ub+o-2v0_NsD8efoB0vyHpA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-24 20:56 ` Gandalf Corvotempesta
[not found] ` <CAJH6TXg3+ZzQAK1Wbf2HtfymrToHY7bSVWTpxP3_Ddi6CL0BbQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-24 21:18 ` Hal Rosenstock
[not found] ` <CAJH6TXiQNc_y8KHO79aOY0A9-PJ7bm54URyhNhVFkd18ZmyM5Q@mail.gmail.com>
[not found] ` <CAJH6TXiQNc_y8KHO79aOY0A9-PJ7bm54URyhNhVFkd18ZmyM5Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-25 7:16 ` Fwd: " Gandalf Corvotempesta
[not found] ` <CAJH6TXgOTbfBqqatMQOxtgnUUt=p9c4mkqaq3s-ujh5hLZJ5Zw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-25 15:57 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A8237384567F02-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-07-26 7:22 ` Gandalf Corvotempesta
[not found] ` <CAJH6TXjnZ=c5X5JzKynuUf4niiAs=A0oQZ9erEMh570L06eZ-g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-26 11:14 ` Hal Rosenstock
[not found] ` <51F25A01.80002-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2013-07-26 12:20 ` Gandalf Corvotempesta
[not found] ` <CAJH6TXjdXUiGJ89b6VDVCcCJ283pv0LziQ5xi4xsO72j4iouGA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-26 12:54 ` Hal Rosenstock
[not found] ` <51F2718F.6060907-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2013-07-26 13:51 ` Gandalf Corvotempesta
[not found] ` <CAJH6TXhe_VwWZEDn 586Qh7ZQZPx7zOBTyUiCD_jHZSXa7oo_bQ@mail.gmail.com>
[not found] ` <CAJH6TXhe_VwWZEDn586Qh7ZQZPx7zOBTyUiCD_jHZSXa7oo_bQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-26 16:32 ` Hal Rosenstock
[not found] ` <51F2A4A5.50604-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2013-07-26 16:44 ` Gandalf Corvotempesta
2013-07-27 10:47 ` Gandalf Corvotempesta
[not found] ` <CAJH6TXgzQC_jPy+hi=R3kAwYdj6Nh3O0sJix==yEPcZ89N+hNQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-27 19:19 ` Hefty, Sean
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