Unanswered Question
Jun 14th, 2010
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Hi Everyone,

I have a 7204 VXR Router, all the ports are being used except for one Fa3/0.  I am about to create three networks,, and  I'm thinking of creating sub-interfaces on Fa3/0 but before I do that, does anyone know what is the maximum sub-interface I can create on a Fast Ethernet port and what is the dis-advantage of creating sub-interfaces?


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Chetan Kumar Ress Mon, 06/14/2010 - 10:27
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1] maximum sub-interface

---> Creating Sub-Interface on Fast Ether is nothing but associating with VLAN ID. The number of VLAN that you can create is the number of interface .

2]  dis-advantage of creating sub-interfaces

---> Dis-Advantage is nothing but you need to take care of CPU , It will utilize CPU as you will add number of interface.


Chetan Kumar

dacruzer1 Mon, 06/14/2010 - 10:29
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What is the command to show the current CPU utilization?



Chetan Kumar Ress Mon, 06/14/2010 - 10:39
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Below are the command to see CPU utilization

1] show processes cpu

2] show processes cpu history


Chetan Kumar


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