4 Nov
2016
4 Nov
'16
4:56 p.m.
On 04/11/16 14:12, fboehm wrote:
I don't have a specific use-case. I'm just
trying to help Pedro to
clarify this technical detail.
But it might be a problem that the official specifications from
Librerouter are including 2x Gigabit Ethernet. Those I assume somebody
had a use-case in mind where this is needed. Maybe something like
daisy-chaining Librerouters.
exactly :)
the idea is to be able to put two librerouters on the same pole, one
powered from the floor with a long cable, and the other one powered over
PoE passthrough via a short ethernet cable, and have a gigabit link
between them. So, you can make 4 independent p2p links from the same
"node", with full performance
the bug in the specsheet, in any case, is that ar8327 is not specified;
thanks for the pointer!
Franz
Am 2016-11-04 um 13:41 schrieb T Gillett:
Could you outline the use case for the two
Gigabit ports in use?
On 04/11/2016 1:31 PM, "fboehm" <fboehm(a)aon.at
<mailto:fboehm@aon.at>>
wrote:
According to the following document there's no separate switch chip
(like AR8327) within Librerouter. Therefore you would only have a
single Gigabit Ethernet interface.
https://librerouter.org/media/document/librerouter_specifications_v3.pdf
<https://librerouter.org/media/document/librerouter_specifications_v3.pdf>
Although the same document mentions "2x Gigabit Ethernet RJ-45".
If I understand the AR9344 datasheet correct, the second Gigabit
interface has to go through the internal 100Mbps switch. Therefore
the OS would show 1000Mbps but in real life you are limited to
100Mbps.
Not very nice :(
Franz
Am 2016-11-04 um 12:43 schrieb T Gillett:
The attached screenshot from the Atheros Reference circuit
shows the
AR9344 supporting 5 x 10/100 Ethernet ports and the AR8327 chip
supporting 5 x 10/100/1000 Ethernet ports.
On Fri, Nov 4, 2016 at 7:20 AM, fboehm <fboehm(a)aon.at
<mailto:fboehm@aon.at>
<mailto:fboehm@aon.at <mailto:fboehm@aon.at>>> wrote:
Am 2016-11-04 um 01:21 schrieb guifipedro:
Hi,
Specifications Sheet v3 from Librerouter says:
2 x Gigabit Ethernet RJ-45
This [1] (Preliminary version) says:
"The Ethernet switch is a highly integrated twoGb MAC
plus
5-port fast
Ethernet switch with non-blocking switch fabric"
I understand this means:
5-port fast Ethernet switch
2 x Gigabit ethernet RJ-45
But I don't see this 2 gigabit ethernet in the features
(first
page).
Is there a definitive version of what capabilities have
AR9344? PDF?
Cheers,
Pedro
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According to AR9344 datasheet GMAC1 (2nd Gigabit interface
in the
SoC) is hardwired to the Fast Ethernet switch. As this
switch is
only Fast Ethernet capable it's creating a bottleneck.
Only GMAC0 (1st Gigabit interface) provides externally
accessible
RGMII pins (Reduced Gigabit Media Independent Interface).
But I could be wrong :)
Franz
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