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Old 05-14-2005, 06:35 PM   #1
abefroman
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Registered: Feb 2004
Location: lost+found
Distribution: CentOS
Posts: 1,419

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Problem with SPAN port


I configured a SPAN port so I can view all network traffic with ethereal on a single computer, but no traffic is going through the SPAN port.

I cant access the internet or ping other computers on the switch from the computer connected to my SPAN port.

All ports are on the same VLAN, and it appears I am SPANning correctly:
switch.urdomain.net>show monitor session 1
Session 1
---------
Type : Local Session
Source Ports:
RX Only: None
TX Only: None
Both: Fa0/1-23
Source VLANs:
RX Only: None
TX Only: None
Both: None
Source RSPAN VLAN: None
Destination Ports: Fa0/24
Encapsulation: Native
Reflector Port: None
Filter VLANs: None
Dest RSPAN VLAN: None

The green light is on and flashes periodically on the SPAN port.

Why isnt any traffic going through the SPAN port?

how can I view all SPAN port traffic with ethereal?
 
  


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