Q&A: How to capture media packets remotely for MGPRA user of MA5612?

data layout

Device (MDU)  IP	VLAN of the device IP	Server (maybe your PC) IP	The problematic port ID of the user
10.144.78.10	100	10.144.78.78	0/2/1

0.1  set the device IP which can be monitored          (MxU means MDU)
MxU(config)%% voip
                                                                               
MxU(voip)%% ip address signaling 10.144.78.10
 
MxU(voip)%% ip address media 10.144.78.10
note：you can use  “display current-configuration section voip” to check
 
0.2  set the remotely packets capturing
MxU(config)%% diagnose
                                                                               
MxU(diagnose)%% remote-capture parameters record-switch disable start-record-num *1*2*3 stop-record-num #1#2#3 udp-port 5001 server-ip 10.144.78.78 source-ip 10.144.78.10 vlan 100
MxU(diagnose)%% remote-capture trace frame/slot/port/bchn 0/1/0/0 auto-stop-time 43200 base-trace enable extend-trace enable
Guide how to find the value “0” in “bchn 0/1/0/0”:
 
MA5612(config)#display mgprauser
{ all<K>|frameid/slotid/portid<S><Length 1-15>|frameid/slotid<S><Length 1-15> }:
all
Command:
        display mgprauser all
  -----------------------------------------------------
  F /S/P/B CHANNEL MGINTERFACE  LINK SET  INTERFACE ID  END ID
  -----------------------------------------------------
  0  /1 /0   /0     70004      1      0      A0
  -----------------------------------------------------

note：you can use “(diagnose%%)#display remote-capture parameters” to check
 
0.3  enable the port
MxU(diagnose)%% remote-capture trace frame/slot/port 0/2/1 auto-stop-time 1000 base-trace enable extend-trace enable
note：you can use “(diagnose%%)#display remote-capture state” to check
 
after that, open the capturing tool (like wireshark, ethereal, etc..), repeat the issue, in the filter of capturing tool input: “udp.dstport==5001” and then Apply to get the packets;
 
when you see the UDP packets whose det. Port is 5001, means you got it! 
 
0.4 stop capturing  

0.5  disable tracing
MxU(diagnose)%% undo remote-capture trace frame/slot/port 0/2/1