selcuks2001
IS-IT--Management
Is there a way to use Cisco Layer 3 switch as a hub?
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layer 3 switch as a hub
- Thread starter selcuks2001
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Not sure what your question is but you can use a L3 switch as just a regular L2 switch if you don't turn on any of the routing capabilities . As far as a hub the answer is no as a switch does not share the bandwidth and have a collision domain like a hub would have .
Parcival21
Technical User
If you have a cisco layer 3 switch and need a hub, i would propose to sell the layer 3 switch and buy a hub for a few bucks.
You will have a lot of profit. I don't see any reason why you would want to use a hub instead of a switch... though.
The only way to turn a switch into a hub is to fill up the mac tables with an attack so that the switch doesn't remember any of the connected PC's In this case it will act similar as a hub(as far as the sending of a message to all connected pc's is concerned),
You will have a lot of profit. I don't see any reason why you would want to use a hub instead of a switch... though.The only way to turn a switch into a hub is to fill up the mac tables with an attack so that the switch doesn't remember any of the connected PC's In this case it will act similar as a hub(as far as the sending of a message to all connected pc's is concerned),
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selcuks2001
IS-IT--Management
Well I know that it doesn't make sense of course to use a Layer 3 switch as a hub. But well there can be some specific conditions where you can need such things. What I wanna do is as follows: A hub port forwards all the data to otehr ports. I want to maintain this with a Layer 3 switch. Or at least how can I configure two (or more) ports so that the data entered into a port will be forwarded to other ports.
I hope that I could explain the problem.
Thanks for the answer though.
SSS
I hope that I could explain the problem.
Thanks for the answer though.
SSS
Parcival21
Technical User
I don't know an exact answer for your problem but you might try to look for the following things:
If there's a possibility to prtevent your switch from building mac tables that would be the possibility because the switch will forward messages to all ports if he doesn't know where to put it. The other possibility seems to be better thought. I remember that there exists something called multicast. I think that multicast means that I can address an IP that liks to a few other addresses. I don't know if this really works though. It might even be that you will need the layer 3 functions of your switch for that.
If there's a possibility to prtevent your switch from building mac tables that would be the possibility because the switch will forward messages to all ports if he doesn't know where to put it. The other possibility seems to be better thought. I remember that there exists something called multicast. I think that multicast means that I can address an IP that liks to a few other addresses. I don't know if this really works though. It might even be that you will need the layer 3 functions of your switch for that.
It think he's justing asking if it will keep the switchports on the same broadcast domain.
To answer the question, a layer3 switch will act as a hub in terms of every port being able to communicate directly to other ports under the default configuration. It will only become layer3 when you build different layer3 interfaces and setup the routing.
If you want the switch to act EXACTLY as a hub (every port receives every packet), then you overload the CAM table.
To answer the question, a layer3 switch will act as a hub in terms of every port being able to communicate directly to other ports under the default configuration. It will only become layer3 when you build different layer3 interfaces and setup the routing.
If you want the switch to act EXACTLY as a hub (every port receives every packet), then you overload the CAM table.
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