Clarification - Fixed Configuration

Answered Question
Nov 30th, 2009
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Hello - real quick question. Was pricing a switch and noticed that a switch designated as a fixed configuration model was considerably less that a a similiar switch that is a for lack of better terminology - non fixed configuration.


Can someone explain to me what exactly fixed configuration means when pertaining to a cisco switch or router.


Thanks in advance.


DH

Correct Answer by Jon Marshall about 7 years 3 months ago

DJ214 wrote:


Hello - real quick question. Was pricing a switch and noticed that a switch designated as a fixed configuration model was considerably less that a a similiar switch that is a for lack of better terminology - non fixed configuration.


Can someone explain to me what exactly fixed configuration means when pertaining to a cisco switch or router.


Thanks in advance.


DH


For both switches and routers fixed configuration means that the device cannot have additional cards/modules added.


So for switches the 4500/6500/Nexus switches are modular because they take line cards/modules that are inserted into the chassis and you can choose which line cards you buy.

Fixed configuration switches don't have this capability so if you buy a 48 port switch such as the 3560 thats it. You can't then increase the number of ports in that switch. To get more ports you have to buy another switch.


Routers - pretty much the same. Fixed means what you get when you buy the device is all you will be able to have in terms of interfaces/modules etc.

Modular routers means that they have spare slots which you can populate with diffferent types of interface/modules (such VPN/IDS) depending on you

your needs.


Obviously modular devices allow for more scalability for future needs hence the additional cost.


Jon

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Correct Answer
Jon Marshall Mon, 11/30/2009 - 11:44
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DJ214 wrote:


Hello - real quick question. Was pricing a switch and noticed that a switch designated as a fixed configuration model was considerably less that a a similiar switch that is a for lack of better terminology - non fixed configuration.


Can someone explain to me what exactly fixed configuration means when pertaining to a cisco switch or router.


Thanks in advance.


DH


For both switches and routers fixed configuration means that the device cannot have additional cards/modules added.


So for switches the 4500/6500/Nexus switches are modular because they take line cards/modules that are inserted into the chassis and you can choose which line cards you buy.

Fixed configuration switches don't have this capability so if you buy a 48 port switch such as the 3560 thats it. You can't then increase the number of ports in that switch. To get more ports you have to buy another switch.


Routers - pretty much the same. Fixed means what you get when you buy the device is all you will be able to have in terms of interfaces/modules etc.

Modular routers means that they have spare slots which you can populate with diffferent types of interface/modules (such VPN/IDS) depending on you

your needs.


Obviously modular devices allow for more scalability for future needs hence the additional cost.


Jon

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