How do I configure mirror ports on a Cisco switch to capture UDP traffic?

I have configured mirror ports on a Cisco switch to capture UPD traffic from a Mitel controller hosting VOIP phones. The following is the result of the port configuration:
---------------------------------------
>show monitor session 1
Session 1
---------
Type              : Local Session
Source Ports      :
    Both          : Gi0/9
Destination Ports : Gi0/11
    Encapsulation : Native
          Ingress : Disabled
-----------------------------------------
When testing, we can see network traffic going through the VoIP sniffer NIC card, but were not receiving the UDP packets that contain the audio from the IP stations. Are there further configuration changes to make on the individual ports?
Thanks.
LVL 3
Jose Rivera-HernandezAVP of ISAsked:
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from_expCommented:
in the configuration you have pasted all traffic(in both directions) from(to) port gi0/9 will be copied to gi0/11
does your sniffer configured correctly?
does this port belongs to ip phone?
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Jose Rivera-HernandezAVP of ISAuthor Commented:
Yes, the sniffer is configured correctly.
Port gi0/9 belongs to IP phones.
Port gi0/11 goes to the sniffer.
Do I need special interface configurations for these ports?
0
from_expCommented:
nope, just generic configuration.
still you can try to paste your config
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Jose Rivera-HernandezAVP of ISAuthor Commented:
Could it be a problem with the sniffer? The NIC on the sniffer was set at auto/auto. I changed it to Full/100 but that didn't help. The show Interface on the mirrored ports below show that "Line Protocol Is Down" on the destination port.

Source Port:
GigabitEthernet0/9 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is 0018.b962.c489 (bia 0018.b962.c489)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00

============

Destination Port:
GigabitEthernet0/11 is up, line protocol is down (monitoring)
  Hardware is Gigabit Ethernet, address is 0018.b962.c48b (bia 0018.b962.c48b)
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
 

0
from_expCommented:
when you configure sniffer to 100full, you have to reconfigure port on the switch also to 100 full
please provide your cisco config
what type of sniffer you are using?
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Jose Rivera-HernandezAVP of ISAuthor Commented:
To all,

After so many things that we tried we found out that we needed another piece of hardware between the Call recording device and Mitel controller; the hardware is an SRC from Mitel which is based on Linux and acts as the medium between the call recording device and the Mitel controller.

thanks everyone!

I'd like to close this question.

jose
0

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