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Use for Dual Ethernet Ports

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Unread 17-09-2013, 04:09 AM   #1
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Thumbs down Use for Dual Ethernet Ports

I have two motherboards, both Gigabyte, one x58/i7-920/24GB and one z77/i7-3770/32GB, both with two Ethernet ports. Up to this point, I have disabled the second port in the BIOS and just used one. My network is thus:

Code:
Cable --> Router -------> Switch ---> 7 Other network loads
Modem    WNDR3700         GS108T
M 6120    |   |
          V   V
3 computers   Wireless loads
I have tried various things like using the second port for a NAS or a dedicated printer. It works, but doesn't connect the device to the main network. SO, anybody got any ideas of how to use both ports or even what they are good for, outside of marketing BS?
Thanks....

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Last edited by davnel; 23-09-2013 at 08:30 PM..
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Unread 17-09-2013, 02:03 PM   #2
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Re: Use for Dual Ethernet Ports

You can use both the ethernet adaptors in the PC if they are in different subnets. For example I use the first one for the Internet connection and the second one for NAS.

NIC1:- DHCP IP from the Cable modem (in the subnet 198.168.1.x).

NIC2:- Manual IP, In subnet 192.168.2.x. No DNS/Gateway.

I haven't tried getting the the NAS box in to the main network though (thought it'd be better to keep it away from the internet facing NIC).
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Unread 17-09-2013, 02:30 PM   #3
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Re: Use for Dual Ethernet Ports

Strider:
Thanks. I have an 8TB RAID mirrored for 4TB that runs as eSATA off the main computer. I have a 4TB Zyxel NAS that I use for backup of the RAID, that's on the network, but only turned on once a week for backup or occasionally if I need the RAID contents available to the wireless network. I haven't found a reliable method of getting the contents of the second port accessible to the first port, which is why it's configured as it is with the second port disabled. Lotsa fun, huh?! Anyway, I was just curious if there was any real use for port 2.
Thanks again.
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Unread 17-09-2013, 04:39 PM   #4
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Re: Use for Dual Ethernet Ports

Quote:
Lotsa fun, huh?! Anyway, I was just curious if there was any real use for port 2.
Thanks again.


Short answer =>, it's pretty much useless for most users. Any decent Gigabit card can handle enough load from multiple devices connected to it via a router.
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Unread 23-09-2013, 08:28 PM   #5
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Re: Use for Dual Ethernet Ports

Followup:

I had emailed Gigabyte support with the same basic question.

Their answer: the second port is a spare for normal installations and has a few limited uses in server applications (and who's gonna use this board for a server??).

Pretty much what we figured. Mostly marketing. Two is better than one. Right!?!? So, under normal conditions, disable the second port in BIOS setup and only use one.
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Last edited by davnel; 23-09-2013 at 08:34 PM..
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Unread 13-01-2014, 11:36 PM   #6
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Re: Use for Dual Ethernet Ports

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Strider:
I realize this is a few months late, BUT, I was wondering if you had heard of using the second port as a dedicated non-internet-facing peer-to-peer network for something like an XP machine that you don't want on the net? With the Microsoft fiasco coming up in April, that might be the way to keep my XP machine in contact with the main computer, without the danger of having it on the internet. Any ideas? Would I need another switch?
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