3560 SPAN Port Problem

[cfujimura]

I am testing a record software for  Cisco IP Phones. This software  must receive voice traffic from  mirrorred ports on a 3560 switch. I´ve  configured the span ports in  this switch, but the only traffic I can see  is broadcast and multicast.  I didn´t see neither the audio streamming  nor the call signaling (I  can´t see any unicast traffic). Below is part  of the configuration of  the 3560 switch.

spanning-tree mode rapid-pvst
spanning-tree loopguard default
spanning-tree portfast bpduguard default
spanning-tree etherchannel guard misconfig
spanning-tree extend system-id
spanning-tree uplinkfast
spanning-tree backbonefast
!
vlan internal allocation policy ascending
!
!
!
interface FastEthernet0/1
  switchport access vlan 23
  switchport mode access
  switchport voice vlan 51
  spanning-tree portfast
!
interface FastEthernet0/2
  switchport access vlan 23
  switchport mode access
  switchport voice vlan 51
  spanning-tree portfast
!
interface FastEthernet0/3
  switchport access vlan 23
  switchport mode access
  switchport voice vlan 51
  spanning-tree portfast
!
interface FastEthernet0/4
  switchport access vlan 23
  switchport mode access
  switchport voice vlan 51
  spanning-tree portfast
!
interface FastEthernet0/5
  switchport access vlan 23
  switchport mode access
  switchport voice vlan 51
  spanning-tree portfast
!
interface FastEthernet0/6
  switchport access vlan 23
  switchport mode access
  switchport voice vlan 51
  spanning-tree portfast

!
interface FastEthernet0/14
  switchport access vlan 23
  switchport mode access
  switchport voice vlan 51
  spanning-tree portfast

!

interface FastEthernet0/48
  speed 100
  duplex full
  spanning-tree portfast

!
monitor session 1 source interface Fa0/1 - 6 , Fa0/14
monitor session 1 filter vlan 51
monitor session 1 destination interface Fa0/48

The ports with IP Phones are 1 to 6 and 14. The port that will receive the VoIP traffic is 48.

The switch is loaded with  C3560 Software (C3560-IPBASE-M), Version 12.2(50)SE1.

Have anyone had this problem before?

Best Regards.

Fujimura.

[cfujimura]

Hi.

I´ve tried this already, but I did it again. I´ve upgraded too the ios to 12.2(55)SE1-C3560-IPBASEK9-M version.

After the command is done (monitor session 2 dest int fa0/48 enc replicate), I can see no more traffic, neither broadcast, nor multicast.

Best Regards.

Fujimura.

[regrajen]

Could you check if any traffic is captured(without encapsulation replicate) at the destination port by a PC with wireshark ?

-Reghu.

[cfujimura]

Hi.

I tested with my own notebook. I used wireshark and packetizer sniffers. With no "encapsulate replicate" option (command "monitor session 2 destination interface fa0/48"), i see only broadcast and multicast traffic. I changed the destination port too, but the problem still happens.

Best Regards.

Fujimura.