Dear Bareney,
And back to 1x is not fast enough:
There are no 1gbit single port network cards that
support more than 1
lane, even if you plug it into a 16 lane slot.
(and I'm not talking about 10gbit cards; if you have
10gbit upstream you
have enough $$ to buy good gear)
Ok, well I've never seen a router with 1 port. I
thought we were talking about building a router?
Have you ever read the link?
Have you noticed that the axiomtek appliance has 7 gigabit ports?
Each one connected with 1 lane pci-e?
The lack of PCIe cards is a good reason to consider a
PCIX machine. On the systems that we have, the 1x PCIe
ports are a lot slower than a PCI-X card in the slot.
Perhaps, but: pci-x: 4gbit for the whole bus system.
pci-e: 2gbit/lane
You need 4Gb/s of throughput to handle a gigablt
router. (1 GB/s full duplex times 2). 1x is 4Gb/s
maximum. In my view, you always need twice the
bandwidth on the bus to avoid contention issues.
sample1:
3 pci-cards:
card 1: 1x = 2gbit (dedicated)
card 2: 1x = 2gbit (dedicated)
card 3: 1x = 2gbit (dedicated)
--------------------
sum: 6gbit
(but the use only 3)
sample2:
2 pci-x cards
card 1: 4gbit (shared)
card 2: 4gbit (shared)
card 3: 4gbit (shared)
---------------------
sum: 4gbit
homework:
calculate with 7 ports.
Kind regards,
Ingo Flaschberger
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