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Beginner

Dedicated supervisor engine slot numbers for cisco core switches

 

I want to know why there is  Dedicated supervisor engine slot numbers in core switch.

   

 

Cisco Catalyst WS-C4503-E ChassisCisco Catalyst WS-C4506-E ChassisCisco Catalyst WS-C4507R+E ChassisCisco Catalyst WS-C4510R+E Chassis
Dedicated supervisor engine slot numbers113 and 45 and 6
 
 
 

 

Please make it clear why its dedicated slot alocate for supervisor engine slot

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Beginner

Hi, I think the reason behind

Hi,

 

I think the reason behind a dedicated slots for Supervisors of 4500/6500 chasis is due to the architectural constraints.

For example the Sup 720 in 6500 has 18 fabric channel (18 connections to the fabric), the line cards have only 1/2 fabric channels depending on their version. So if you have to make a supervisor independent of the slot you need to have 18 backplane  fabric channels in each slot of the chassis for the SUP to work in all slots as compared to 1/2 backplane fabric channels per slot as we have right now for the line cards. Almost same should go for the 4500. And this might come across as an architectural constraint. This is the best explanation i can think of.

 

Thanks

 

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