Latest threads in Ethernet LANshow only best voted threads
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MAC destination address
How would a MAC layer look into the MAC header if it is the one to put the MAC header onto the packet coming from upper layer (Network layer)? I am talking about the packet that a node sends out to...
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16 years ago
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Knowledge of destination MAC address
You are looking for something called Address Resolution Protocol (ARP), for IP Version 4, or Neighbor Discovery (ND), for IPv6. Respectively, are used when the destination is on the same IP subnet as...
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16 years ago
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Several questions about LLC...
After reading the 802.2 std, I've got several questions: 1, what does exactly do? Does it mean that if I pass an to LLC user, the user will have to use "" to pass response to the peer LLC entity? 2,...
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16 years ago
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Ethernet switch on a PCI card
Does anyone know of an ethernet switch on a PCI card? Years ago, I had a 10BaseT card which was a 5-port hub on an ISA card (one port being a NIC on the ISA bus and the other 4 ports on the back of...
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16 years ago
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Query on MSTP(Force port state)
Hi, What should be the state of the port whose msti force port state is it be forwarding or discarding?Is this command equivalent to disabling MSTI on that port or disabling the port for that...
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16 years ago
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Looking for Cheap GigE 850nm to 1310nm Conversion
Over the next year I'm looking to buy 20 to 80 gigabit ethernet converters, going from 850 nm to 1310 nm. What is the cheapest way to do this reliably? I priced out a new switch and price is too high...
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16 years ago
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about of router and switch
what is diffrents between router and switch. Regards, keshav
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16 years ago
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Connection to Switch Drops Packets But Hub Works
I have a strange situation that I think others in this group could probably clarify for me. I have two old Bay Networks / Nortel Accelar 1200 switches, A and B. Switch B uplinks to A, which uplinks in...
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16 years ago
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Looking for Small Ethernet Switch With One SFP and a Few 10/100
I have a small media converter application for a test lab where I need to connect a 10/100 device to an optical gigabit ethernet device. Having failed to find any media converter that could handle...
3
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16 years ago
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Ethernet pulse shape specification
Can someone help me find a specification for the pulse shape specification for an ethernet pulse. What I am interested in is the limits for rise and fall times. I have searched google and can't find...
1
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16 years ago
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Gigabit extendeder over 1 or 2 pairs?
Does anyone know of any ethernet extender type devices to establish a gigabit link over 2 pairs of copper? Have a short (100') inter-building link but can't run fiber or copper for that matter...
2
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16 years ago
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Setup Metro ethernet (KPN EVPN)
Hi, We have just replaced our existing DSL based VPN solution with a metro ethernet one, connecting our 3 sites together over 10Mbit links. Now i just have a simple question. The telco setup the metro...
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16 years ago
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Seminal paper about ethernet over long distances
I was recently discussing this with some one, and the issue came up that before the 50microsec RTT limit imposed by IEEE was put, some intrepid engineers implemented Ethernet over really long...
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16 years ago
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Cheapest Bit Error Testing for Ethernet
What is the cheapest solution for bit error testing on any of the following ethernet connections: - 100-Base-FX (fiber optic 100 Megabit) - 1000-Base-SX (fiber optic gigE) - 100-Base-T (copper 10/100...
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16 years ago
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straight-through / cross-over RJ45: interchangeable: why?
Everywhere I read about this, straight-through and cross-over RJ45 ethernet cables are _not_ interchangeable: " ... straight-through and cross-over cables ... the two are not interchangeable ..."...
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16 years ago
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