Ethernet Switch -- Managed versus Unmanaged
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Posted by on January 25, 2007, 3:33 pm
Please log in for more thread options Hi, I'm designing an Ethernet Switch and one of the requirements is that the IP address of the device be fixed to a port, i.e port 1 would always have IP XYZ, can this be done with an unmanaged ethernet switch? Thanks for the help. GC | |||||||||||||||||||
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Posted by Walter Roberson on January 25, 2007, 4:46 pm
Please log in for more thread options If you are designing the switch, you can put in whatever restriction you want. That point would seem obvious enough that I feel I must be misunderstanding the question. Layer 2 ethernet switches don't -need- IP addresses at all. There have, historically, been quite a few layer 2 switches that had no controls, or were controlled via a serial port. For network management purposes, it is -convenient- to be able to ping a layer 2 switch as part of probing network health, but it isn't a necessity. There are a lot of other -convenient- controls that one can also provide; people have tried a large number of such controls and the core set of what is "really nice to have" on a layer 2 switch is a set of facilities commonly known as a "managed switch". It is by no means unknown for a layer 2 switch to offer some level of configuration control only through a dedicated access method, such as restricted to a certain ethernet port. On the whole, though, most of the time these days there just isn't any point on putting in such a restriction. The modern version of the restriction is perhaps to allow a VLAN to be designated as the "management VLAN", and then to allow whatever convenient ports to be part of that particular VLAN. A layer 2 switch does not need to send its IP address out for any layer 2 function such as Spanning Tree. | |||||||||||||||||||
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Posted by Rick Jones on January 25, 2007, 5:23 pm
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gigiwk@gmail.com wrote: > I'm designing an Ethernet Switch and one of the requirements is that
> the IP address of the device be fixed to a port, i.e port 1 would > always have IP XYZ, can this be done with an unmanaged ethernet > switch? if the switch is unmanaged, there is no reason to be able to contact the switch itself. that suggests it is not possible to assign an IP to any port on the switch. similarly, if you meant to ask that only a system with IP XYZ could be connected to a specific port, an unmanaged switch would not have any means onboard to verify/configure such a thing. rick jones -- oxymoron n, Hummer H2 with California Save Our Coasts and Oceans plates these opinions are mine, all mine; HP might not want them anyway... :) feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... | |||||||||||||||||||
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Posted by developers@thuk.co.uk on January 29, 2007, 5:29 am
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On Jan 25, 8:33 pm, gig...@gmail.com wrote: > Hi,
> > I'm designing an Ethernet Switch and one of the requirements is that > the IP address of the device be fixed to a port, i.e port 1 would > always have IP XYZ, can this be done with an unmanaged ethernet switch? No By defination an unmanged switch wont do that | |||||||||||||||||||
>the IP address of the device be fixed to a port, i.e port 1 would
>always have IP XYZ, can this be done with an unmanaged ethernet switch?