Latest threads in Ethernet LANshow only best voted threads
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Static route or NAT
Hi, We use a pfsense ( firewall. Now say that I have three lan nics (in addition to wan) in this box. Nic1 at 192.168.10.1, Nic2 at 192.168.15.1 and Nic3 at 192.168.20.1, both Nic1 and Nic3 with...
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16 years ago
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question about clause 28 auto-negotiation
Hi, I have a question regarding to 802.3 clause 28, Figure 28-16 Arbitration state diagram. the variable "transmit_disable" is set to "true" in 2 states, TRANSMIT_DISABLE and LINK_STATUS_CHECK. When...
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16 years ago
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VLAN woes...
Hi, If I have a router with a gigabit port assigned both 192.168.10.1 VLAN ID 10 and 192.168.20.1 with VLAN ID 20. I connect a cable from this router port to port 1 on a D-Link DGS-1216T managed...
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16 years ago
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query on port speed specification
Hi All, In CSMA/CD Ethernet, what actually 100Mbps means: 1. Whether it is the Tx speed of that port. If so, whether it can support the same rate in Rx also at the same time. 2. Whether it is the...
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16 years ago
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Finding an ethernet loop?
Hey Everyone, Wondering if anyone can tell me what methods they use to find a Ethernet loop in a large network. Recently the company that I work for is having issues with users plugging both ends of...
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16 years ago
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Help with VRRP and Vlan trunk
Hi All: I have a VRRP question for all network experts out there. What happens when a port which is a member of a Vlan goes down in a VRRP environment? Diagram is as follow: ____________________ | |...
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16 years ago
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Ethernet on recent FPGAs
(snip) Higher than the actual clash rate on the current system? I have heard stories about NICs produced with the same address, most likely in the same batch with a high probability of being installed...
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16 years ago
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question on Ethernet Devicedriver
Hi all, 1) Iam working on Philips LPC 2292 controller board, Ethernet 2) If at all if a single packet comes and sits in Rx Buffer. Whether before it raises an Interrupt. 3) If at all If ISR is...
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16 years ago
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GigE means 1Gbps or 2Gbps (Rx and Tx together)
It may be a very basic question. But nobody is able to give an answer citing some statndard (I couldn't find a proper answer in IEEE 802.3 also) My assumption is that it is 2Gbps (Rx, Tx together) Can...
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16 years ago
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Totally different IP's on the same LAN?
Imagine a common home DSL internet setup: 1) You have a router that has a public IP address on the WAN port (I'll pick an entirely random value of 73.52.66.5) and a private IP address on the LAN port...
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16 years ago
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Fiber vs cat6
We are setting up a production room with 6 high capacity laser printers/presses. they will be connecting to an imposition server and the bandwith between the server and laser workstations will be...
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16 years ago
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VPN Vs VLAN
I'm trying to read up on Virtual LAN's, and I keep coming across Virtual Private Networks. Are these the same thing? As far as I understand, the purpose of a VLAN server is to provide an outside host...
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16 years ago
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Force NIC to 100 Mbps
I have a desktop computer that's a few years old, I ressurected it just there a few days ago. The NIC in it is the "3Com EtherLink III ISAPNP", also known as the 3Com 3c509b, which is about a decade...
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16 years ago
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Samba share safe within LAN?
I have four computers on a LAN with private IP addresses (e.g. 192.168.1.*), and a router on the LAN which provides access to the Internet. I have considered setting up a password-free file share on...
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16 years ago
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General Network Help
We are having an issue that I could use some help on. We need to connect two networks together, we'll call them network 1 and network 2. I am an administrator on network 1 but not on network 2. We've...
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16 years ago
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