[etherlab-users] Redundancy support

[Richard Hacker]

In principle it should work, although I have not tested it. The trick 
with redundancy is, that the number of visible slaves and the order of 
packet traversal must not change when a single link is destroyed.

You are quite correct in the assumption that redundancy is transparent 
to the application. The status is only required to report a redundant 
state or not, otherwise redundancy would be useless to the user. The 
state is not required by the application to select another 
source/destination of data.

- Richard

PS. I just love your ascii art ;) Monospace font, yeah!

On 27.02.2015 05:28, Gavin Lambert wrote:
> Hi,
>
> I have a question regarding support for cable redundancy in the stable-1.5
> branch.
>
> I know that it has options for enabling a "backup" network port on the PC
> and connecting the end of a single chain to this port.  Presumably this is
> mostly transparent to the application code (although it can query for
> status)?
>
> Does it also support redundant tree links similarly?
>
> Eg. PC ---- SL1 --- SL2 --- SW --- SL3 --- SL4 -+
>       |                      | |                 |
>       |             +- SL5 --+ +-- SL8 -+        |
>       |             |                   |        |
>       |             +- SL6 ------- SL7 -+        |
>       +------------------------------------------+
>
> I know I've seen a diagram like this with an internal ring on a tree branch
> somewhere, although I'm having trouble locating the reference now.  Maybe
> this is a feature of the switch slave rather than of the master?
>
> Regards,
> Gavin Lambert
>
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> etherlab-users at etherlab.org
> http://lists.etherlab.org/mailman/listinfo/etherlab-users
>

Mit freundlichem Gruß

Richard Hacker

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