Cisco Systems enable Span on Cisco Switch 3500

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Subject Author Date
enable Span on Cisco Switch 3500 th_sommer 10-16-06
Posted by on October 16, 2006, 8:39 am
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Hi there,

i would enable Span on my Switch. I use these Commands:
1. monitor session 1 source GigabitEthetnet 0/1 both
2. monitor session 1 destination GigabitEthernet 0/23

On Port GigabitEthernet 0/23 i have the Server which runs Ethereal.
When I enter the second command the GigabitEthernet 0/23 is
unavailable.

Whats the Mistake?

mfg

Thomas Sommer


Posted by Tom on October 16, 2006, 10:10 am
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On 16 Oct 2006 05:39:29 -0700, th_sommer@gmx.de wrote:

>Hi there,
>
>i would enable Span on my Switch. I use these Commands:
>1. monitor session 1 source GigabitEthetnet 0/1 both
>2. monitor session 1 destination GigabitEthernet 0/23
>
>On Port GigabitEthernet 0/23 i have the Server which runs Ethereal.
>When I enter the second command the GigabitEthernet 0/23 is
>unavailable.
>
>Whats the Mistake?
>
>mfg
>
>Thomas Sommer

I suspect you would want the destination to be FastEthernet0/23

The 3500 switches only ever had at most 2 Gigabit interfaces



Tom

Posted by on October 16, 2006, 10:43 am
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Hi Tom,

thanks for your answer.
The switch is correctly a 3560G. Now we found an Article, which
describe that it is the correct effect on this switch.
The Mirrorport itself is unavailable in this time.

Regards

Thomas


Posted by on October 16, 2006, 10:51 am
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Hi Thomas,

the correct input have to be ;-):

monitor session 1 source interface GigabitEthetnet 0/1 both
monitor session 1 destination interface GigabitEthernet 0/23

I think the capture server would'nt be available remotly for the time
you want to sniff. So be sure to have local access.

Fred


Posted by on October 16, 2006, 10:54 am
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GigabitEthernet


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