[c-nsp] Questions Regarding Cisco 3750 switches

Drew Weaver drew.weaver at thenap.com
Mon Apr 4 13:24:04 EDT 2011


Hmm, darn.

Does anyone know if on say a 4948 you can tell it to be GigabitEthernet 1/1 instead of 0/1? I know this is stupid and pointless but it would be a handy feature =D

-Drew


-----Original Message-----
From: Pete Templin [mailto:petelists at templin.org] 
Sent: Monday, April 04, 2011 1:21 PM
To: Tom Ammon
Cc: Drew Weaver; cisco-nsp
Subject: Re: [c-nsp] Questions Regarding Cisco 3750 switches

On 4/4/2011 11:56 AM, Tom Ammon wrote:
> To change the switch number in a 3750, use "switch X renumber Y" where 
> X is the current switch number, and Y is the one you want it to be (1 
> in this case). Use "show switch" to see how it's currently configured.
>
I don't think this will fix the OP's request.

A fresh-out-of-box 3750 will have ports 1/0/N where N is 1-48 and some 
uplink ports of varying numberings (3750X will have G1/1/N and T1/1/N, 
for example).  Doing 'switch 1 renumber Y' will only change the ports to 
be Y/0/N, GY/1/N, and TY/1/N.

As far as the other question, a 3750X is allowing me to do 'speed auto 
10 100', and if I'm at 'speed auto 10' and hit the question mark, I see:

   100   Include 100 Mbps in auto-negotiation advertisement
   1000  Include 1000 Mbps in auto-negotiation advertisement
<cr>

I presume that'll do what you wish.  I suspect it'll still operate at 
1000 if you do 'speed auto 10 100' and the other side sends GE link 
pulses, but don't know for certain.

pt




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