Latest threads in Ethernet LANshow only best voted threads
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4 Port 1000 MB "Hub"
Is there anyone that is aware of a low cost 4 port 10/100/1000 MB hub that is available? There seems to be a lot of switches around but not any hubs. I am looking for something I can easily insert in...
12
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14 years ago
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12 | |
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STP - bridge ID
MAC addresses are just 48-bit numbers. Why do you say that addresses can't be compared?
3
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14 years ago
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3 | |
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STP implementations
Hello I hope my question will be found in the ocean of spam in this group. Linux kernel has its own implementation of the spanning tree, it comes along with the bridge functionallity. Many switch chip...
1
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14 years ago
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1 | |
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very basic question about MAC addresses - globally unique identifying bit
I'm confused, and would appreciate some guidance. I'm reading "The All New Switch Book" (Seifert & Edwards), and I'm on page 25, where they say that, before the IEEE took over, Xerox issued some OUIs...
3
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14 years ago
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3 | |
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Putting a switch between router and cable modem
Probably not. Your "router" is the device fronting for your systems with the cable modem. If you want your systems to speak-out the cable modem, they need to go through the "router." If you have poor...
13
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14 years ago
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13 | |
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Spanning Tree Algorithm
Hi All, I have basically understood the basics of the Spanning Tree Algorithm, but is there some website which thoroughly explains the algorithm along with some dry runs through it. I found a lot of...
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14 years ago
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What happens when I ping my own WAN IP from LAN side?
If from within my LAN, I ping my WAN ip, how is the ping packet routed to the destination? Does it go out of the router, to the ISP, then back to the router (ping target)? Or is the router smart...
4
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14 years ago
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4 | |
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MTU for cable modem connection to shaw.ca
The interface to my cable modem connection to here on Pender Island has MTU = 576 whereas I would have expected to find MTU = 1500. joule:/home/peter# ifconfig eth0 eth0 Link encap:Ethernet HWaddr...
14
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14 years ago
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14 | |
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Why 4 pairs in 100Base-T
Connections between desktop computers and hubs/routers customarily us RJ45 copnnectors and cat5 cable carrying 4 twisted pairs. But, AIUI, only 2 of those pairs are used for the protocol, so what are...
8
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14 years ago
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8 | |
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IGMP fast-leave
Hello, trying to understand how "fast-leave" works; I do realize it's related to IGMP Leave messages and how they are processed by IGMP aware switches, but no more. RFC2236 mentions this term only one...
2
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14 years ago
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2 | |
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networking middleware
Hello there are a few companies out there (for example, "IPinfusion" and its ZebOS platform) delivering , as they call it, networking middleware providing support of Layer 2/3 routing and switching...
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14 years ago
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multicast address
Hello studying multicasting and IGMP specifically, and have a few points I don't clearly understand. First of all why do we need Ethernet multicast addresses, wouldn't IP multicasting suffice to...
2
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14 years ago
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2 | |
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STP cost
Sir, Can you pl tell me the formula for calculating STP cost? How cost of 19 is arrived for 100Mbps interface & 4 is arrived for 1Gbps interface??
2
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14 years ago
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2 | |
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rate limits
Hello many L2 (and likely L3+) switches have such a feature as rate limiting. It seems such feature is applied per port basis, as well as per connection (session), if we consider L3-L4 switches. But...
3
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15 years ago
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3 | |
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confused about PHY and transeiver
Hello I'm confused about definitions of PHY and Ethernet transeiver. They ain't the same, as I assume. Transeiver as I understand, is rather a sort of converter from one media to another, for example...
5
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15 years ago
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5 |