Hey, SPAN on an ISR is limited IIRC. Depending on your config, you might be able to use RITE:
formatting link
It works like SPAN, but SRC has to be an interface running IP, and DST as to be an Ethernet. If you need any help setting this up, give me a shout.
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thanks for your feedback and yes I do need help in troubleshooting this. I wanted the Dialer0 as source and F0/0 as the destination output and I did the steps at the above address you gave and but I'm not getting any dialer0 traffic from the destination port Fa0/0. the commands I did were: router(config)#ip traffic-export profile my_rite router(conf-rite)#int dialer0 router(conf-rite)#bidirectional router(conf-rite)#mac-address 0090.27FC.756F router(conf-rite)#exit router(config)#int f0/0 router(config-if)#ip traffic-export apply my_rite .Oct 1 21:27:44.326: %RITE-5-ACTIVATE: Activated IP traffic export on interface FastEthernet0/0
the only thing I'm not sure about is the mac address. I used the mac-address of the NIC in my PC - this is the receiving device. That's correct isn't it?
here's what the 'show run' gave after putting in the above commands:
ip traffic-export profile my_rite interface Dialer0 bidirectional mac-address 0090.27fc.756f
interface FastEthernet0/0 ip address 192.168.0.1 255.255.255.0 ip traffic-export apply my_rite duplex auto speed auto
interface Dialer0 ip address negotiated previous ip access-group 104 out no ip redirects no ip proxy-arp ip nat outside ip virtual-reassembly encapsulation ppp dialer pool 1 dialer idle-timeout 0 dialer persistent dialer-group 1 no cdp enable ppp authentication chap callin ppp chap hostname my username ppp chap password 0 password
thanks for any further advice.