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TOPIC: Whats with all the Cat5 plugs?

Whats with all the Cat5 plugs? 11 years 4 days ago #11808

  • ZiPPy
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I was just curious why a server would have 4 RJ-45 ports along with 2 NIC cards? I noticed this on a server at work that had Cat5 cables in all of them except one of the NIC cards.

If you guys want pictures let me know. But I was just wondering what the purpose of all them was.

ZiPPy
ZiPPy
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Re: Whats with all the Cat5 plugs? 11 years 4 days ago #11811

  • nske
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It's must either be more than one NIC on the same PCI interface (useful to save space on the motherboard) or a PCI TAP device, used for sending a copy of the NIC's traffic somewhere else for auditing purposes.
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Re: Whats with all the Cat5 plugs? 11 years 4 days ago #11822

i agree with nske, i have seen a 4 interface ethernet card
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RJ45 11 years 4 days ago #11823

  • TheBishop
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We have several of these 4-port Ethernet cards in firewalls. The card can either act as four Ethernet NICs or as a 4-port Ethernet switch internal to the server, depending on how you install it.
Another possibility, more likely on high-end kit, is that they provide extra console (serial) and administrative ports that also use RJ45s. I've seen this on some Solaris boxes but may be on other servers too
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Re: Whats with all the Cat5 plugs? 11 years 3 days ago #11825

  • nske
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You can also use interface bonding in Linux/*BSD to take advantage of the total bandwidth of multiple interfaces, for one link (something similar to Etherchannel technology in Cisco devices).
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Re: Whats with all the Cat5 plugs? 11 years 3 days ago #11838

I think you can do that in Windows Server too (not sure though, correct me if I'm wrong).
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