SPAN on 6500 - maximum of 1 TX monitor interface(s)

Unanswered Question
Jan 10th, 2008

Guys,

This cant be right can it? I want to monitor two ports on a ws-6724-sfp on a 5400 with a sup 720?

% This platform allows a maximum of 1 TX monitor interface(s)

Can it?

Many thx

Ken

6500switch#conf t

Enter configuration commands, one per line. End with CNTL/Z.

6500switch(config)#monitor session 1 source interface Gi2/1

6500switch(config)#^Z

6500switch#sh monitor

Session 1

---------

Type : Local Session

Source Ports :

Both : Gi2/1

6500switch#conf t

Enter configuration commands, one per line. End with CNTL/Z.

6500switch(config)#monitor session 1 source interface Gi1/1

% This platform allows a maximum of 1 TX monitor interface(s)

6500switch(config)#^Z

6500switch#sh monitor

Session 1

---------

Type : Local Session

Source Ports :

RX Only : Gi1/1

Both : Gi2/1

6500switch#conf t

I have this problem too.
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owillins Wed, 01/16/2008 - 15:29

This issue is due to the hardware limitations of Cisco Catalyst switches. Traffic monitoring in a SPAN session has these restrictions:

1. You can monitor incoming traffic on a series or range of ports and VLANs.

2. You can monitor outgoing traffic on a single port.

3. You cannot monitor outgoing traffic on multiple ports.

4. You cannot monitor outgoing traffic on VLANs.

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/span.html

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