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Multicast traffic on Huawei GPON not working.

The possible causes of the problem for the live service implemented in the multicast mode are as follows:
  • The STB does not send IGMP packets and therefore the live program information is not reported.
  • A failure of exchanging IGMP messages or program matching occurs and therefore the device fails to generate the forwarding entry.
  • The video stream is not transmitted downstream.
  • IGMP message exchange between the OLT and the ONU is abnormal. As a result, the OLT does not forward the program data to the ONU.

Configuration steps

• Indicate multicast vlan
• Add uplink port to the multicast vlan
• Add IGMP user
• Configure multicast vlan default uplink port
• Configure multicast vlan program match mode
• Configure multicast vlan igmp version
• Configure multicast vlan igmp mode
• Add multicast vlan member
MA5680T(config)#display vlan 2927

  Command:
          display vlan 2927
  VLAN ID: 2927
  VLAN name: VLAN_2927
  VLAN type: smart
  VLAN attribute: common
  VLAN description: MULTICAST TRAFFIC
  VLAN forwarding mode in control board: VLAN-MAC
  VLAN forwarding mode: VLAN-MAC
  VLAN broadcast packet forwarding policy: forward
  VLAN unknown multicast packet forwarding policy: forward
  VLAN unknown unicast packet forwarding policy: forward
  VLAN bind service profile ID: -
  VLAN bind RAIO profile index: -
  VLAN priority: -
  -------------------------------
   F /S /P     Native VLAN  State
  -------------------------------
   0 /6 /0               1  up  
  -------------------------------
  Standard port number: 1
  -----------------------------------------------------------
   INDEX  TYPE  STATE F /S /P   VPI  VCI   FLOWTYPE FLOWPARA
  -----------------------------------------------------------
    3738  gpon  up    0 /2 /6   11   1     vlan     101     
  -----------------------------------------------------------
  Service virtual port number: 1     
  Note: F--Frame, S--Slot, P--Port


MA5680T(config)#btv

MA5680T(config-btv)#igmp user add service-port 3738 no-auth 

  Command:
          igmp user add service-port 3738 no-auth 

MA5680T(config-btv)#quit

MA5680T(config)#multicast-vlan 2927

MA5680T(config-mvlan2927)#igmp uplink-port 0/17/0

MA5680T(config-mvlan2927)#igmp default uplink-port 0/17/0

MA5680T(config-mvlan2927)#igmp match mode disable 
  Command has been executed successfully

MA5680T(config-mvlan2927)#igmp version v3

MA5680T(config-mvlan2927)#igmp mode proxy  
  Are you sure to change IGMP mode? (y/n)[n]:y
  Command is being executed. Please wait...
  Command has been executed successfully

MA5680T(config-mvlan2927)#igmp multicast-vlan member service-port 3738

MA5680T(config-mvlan2927)#return

MA5680T#display current-configuration section BTV

  Command:
          display current-configuration section BTV 
[MA5600V800R015: 5800]
#
[btv-config]
  
 btv
 igmp user add service-port 3738 no-auth
 multicast-vlan 2927
  igmp default uplink-port 0/17/0
  igmp match mode disable
  igmp multicast-vlan member service-port-list 3738
  igmp mode proxy
  igmp uplink-port 0/17/0 
#
return

Verification

MA5680T(config)#display mac-address vlan 2927
  It will take some time, please wait...
  -----------------------------------------------------------------------
   SRV-P BUNDLE TYPE MAC            MAC TYPE F /S /P   VPI  VCI   VLAN ID
   INDEX INDEX
  -----------------------------------------------------------------------
       -     -  eth  dc4a-3e3a-562d dynamic  0 /17/0   -    -        2927
    3738     -  gpon 58b4-2d10-0520 dynamic  0 /10/10  1    2        2927
  -----------------------------------------------------------------------
  Total: 2
  Note: F--Frame, S--Slot, P--Port, F/S/P indicates PW Index for PW,
        A--The MAC address is learned or configured on the aggregation port,
        VPI indicates ONT ID for PON, VCI indicates GEM index for GPON,
        v/e--vlan/encap, pritag--priority-tagged,
        ppp--pppoe, ip--ipoe, ip4--ipv4oe, ip6--ipv6oe

		
MA5680T(config)#interface gpon 0/10

MA5680T(config-if-gpon-0/10)#display ont traffic 10 1 2

MA5680T(config-if-gpon-0/10)#
 ----------------------------------------------------------------
  Traffic Information
 ----------------------------------------------------------------
 Up traffic (kbps)          :  0
 Down traffic (kbps)        :  3150
 ----------------------------------------------------------------

 MA5680T(config-if-gpon-0/10)#return

 MA5680T#display igmp user all

  Command:
          display igmp user all 
  Command is being executed. Please wait...
  ------------------------------------------------------------------------------
  User port  Bind     State   Auth    Quick     IGMP    Video   Log    Available
             profiles                 leave     flow ID flow ID switch programs 
  ------------------------------------------------------------------------------
  0/10/10/3738   -    online  no-auth MAC-based 3738    3738    enable  8       
  ------------------------------------------------------------------------------
  Total: 1

  
  MA5680T#display igmp user smart-vlan 2927

  Command:
          display igmp user smart-vlan 2927 
  Command is being executed. Please wait...
  ------------------------------------------------------------------------------
  User port  Bind     State   Auth    Quick     IGMP    Video   Log    Available
             profiles                 leave     flow ID flow ID switch programs 
  ------------------------------------------------------------------------------
  0/10/10/3738   -    offline no-auth MAC-based 3738    3738    enable  8       
  ------------------------------------------------------------------------------
  Total: 1


  
 MA5680T#display multicast forwarding-table 0/10/10 ont 1 

  Command:
          display multicast forwarding-table 0/10/10 ont 1 
  -----------------------------------------------------------------------------
  Group addr      Source IP       VLAN  ONT-port  Client IP       Age(second)
  -----------------------------------------------------------------------------
  238.10.92.1     -               -     2         192.168.1.170   5          
  -----------------------------------------------------------------------------
  Total : 1
  Note: "SSID" indicates the SSID of the WiFi interface

 MA5680T#display multicast flow-statistic  vlan 2927 ip 238.10.92.1

  Command:
          display multicast flow-statistic  vlan 2927 ip 238.10.92.1 
  Command is being executed. Please wait...
  Multicast flow statistic result: 2180(kbps)
  
 
 MA5680T#display multicast upstream-mode 
  The current interactive mode of the upstream route is: IGMP



MA5680T#display  ont info 0 10 10 1

-- output ommited--

-----------------------------------------------------------------------------
TDM port type                     : E1
TDM service type                  : TDMoGem
MAC learning function switch      : Enable
ONT transparent function switch   : Enable
Multicast forward mode            : Unconcern
Multicast forward VLAN            : -
Multicast mode                    : IGMP-Snooping
Upstream IGMP packet forward mode : Unconcern
Upstream IGMP packet forward VLAN : -
Upstream IGMP packet priority     : -
Native VLAN option                : Concern
-----------------------------------------------------------------------------

-- output ommited --
The igmp-snooping on multicast mode in the output indicates that the OLT works in the IGMP proxy mode and the ONU works in the IGMP snooping mode

Debbuging

For a deep dive to see the IGMP mesages exchange, in below example we receive IGMP Membership Report message from source 192.168.1.170 who is joining the multicast group 238.10.92.1 
MA5680T#debugging igmp service-port 3738

  Command:
          debugging igmp service-port 3738 

MA5680T#terminal debugging 
% Current terminal debugging is on


MA5680T#terminal monitor 
% Current terminal monitor is on


MA5680T#
*7.3790394908 MA5680T BTV/7/ALL:

  2019-05-30 15:25:25+03:00 service-port index 3738 receive an IGMP packet
  Type: REPORT(TO_IN), Version: V3, Group IP: 238.10.92.1, Source IP: --
  Ethernet, src: 58-b4-2d-10-05-20
  IP, src: 192.168.1.170
  IP options: 0x94040000
  
  
MA5680T#undo debugging igmp
MA5680T#undo terminal monitor 
% Current terminal monitor is off

MA5680T#undo terminal debugging 
% Current terminal debugging is off


Alt: transparently forward multicast traffic through the OLT

In order to allow the OLT to pass through transparently to and from the ONT. In this example here below; port LAN1 of ONT is provisioned with internet; vlan 72 and the ONT is doing routing for this internet service while port LAN2 is provisioned with vlan 73 and the ONT is forwarding multicast traffic through the OLT on this service. 

  INTERNET-PC          
    ┌──────┐
    │      ├────────────┐    
    └──────┘            │                         
                   LAN1 │                          MPLS & INTERNET               
                     ┌──────┐       ┌───────┐        ┌────────┐           ┌────────┐
                     │ ONT  ├───────┤  OLT  ├────────┤CORE NET├───────────┤        │
                     └──┬───┘       └───────┘        └────────┘           └────────┘
                   LAN2 │                                             MULITICAST-RECEIVER
    ┌──────┐            │                                         
    │      ├────────────┘
    └──────┘
MULITICAST-SOURCE

To allow the OLT to receive or forward multicast traffic to the ONT, make the service-port transparent with respect to multicast.

1. Get the service-port associated with a vlan 
MA5600T(config)#display service-port vlan 73 
 Switch-Oriented Flow List
 ----------------------------------------------------------------------------
 INDEX VLAN VLAN     PORT F/ S/ P VPI  VCI   FLOW  FLOW       RX   TX   STATE
       ID   ATTR     TYPE                    TYPE  PARA            
 ----------------------------------------------------------------------------
  1235   73 common   gpon 0/2 /7  9    2     vlan  102        21   21   up   
 ----------------------------------------------------------------------------
  Total : 1  (Up/Down :    1/0)
2. Enable multicast forwarding on service port 
MA5600T(config)#multicast-unknown policy service-port 1235 transparent
MA5600T(config)#display current-configuration section btv
#
 [btv-config]
  
 btv
 multicast-unknown policy service-port-list 1235 transparent
#
3. It is also essential to make the service profile associated with the ONT enbaled for transparency 
MA5600T(config)#ont-srvprofile gpon profile-name PAUL-MCAST
MA5600T(config-gpon-srvprofile-76)#transparent enable 
MA5600T(config-gpon-srvprofile-76)#commit 
MA5600T(config-gpon-srvprofile-76)#quit
MA5600T(config)#display ont-srvprofile gpon profile-name PAUL-MCAST
 -----------------------------------------------------------------------------
 Profile-ID  : 76
 Profile-name: PAUL-MCAST
 Access-type : GPON
 -----------------------------------------------------------------------------
 Port-type     Port-number
 -----------------------------------------------------------------------------
 POTS          0
 ETH           0
 TDM           0
 MOCA          0
 CATV          0
 -----------------------------------------------------------------------------
 TDM port type                     : E1
 TDM service type                  : TDMoGem
 MAC learning function switch      : Enable
 ONT transparent function switch   : Enable
Important:
To allow a ONT to operate as a router and forward multicast as well, the port provisioned with multicast forwarding must be excluded from LAN configuration within the ONT GUI In this example port LAN1 is provisioned with vlan 72 and ONT is doing routing for internet
Note:
MAC address is leant on VLAN4095 which is special reserved VLAN for routed ONT port 
MA5600T#display ont-learned-mac 0/2/7 9 eth 1 
---------------------------------------------------------------
F/S/P   ONTID    ONT        ONT       MAC-ADDRESS        VLAN
                 port-type  port-ID
---------------------------------------------------------------
0/ 2/7   9       ETH        1         705a-0f2a-47cc     4095
0/ 2/7   9       ETH        1         705a-0f2a-47cc     0
---------------------------------------------------------------
Total: 2
In this example port LAN2 is provisioned with vlan 73 and ONT forwarding muliticast traffic to OLT
Note:
MAC address is learn on VLAN102 which is the standard configuration based on service-profile. 
MA5600T#display ont-learned-mac 0/2/7 9 eth 2
---------------------------------------------------------------
F/S/P   ONTID    ONT        ONT       MAC-ADDRESS        VLAN
                 port-type  port-ID
---------------------------------------------------------------
0/ 2/7   9       ETH        2         10e7-c6eb-9d4c     0
0/ 2/7   9       ETH        2         10e7-c6eb-9d4c     102
---------------------------------------------------------------
Total: 2
References
https://forum.huawei.com/enterprise/en/how-to-troubleshoot-the-failure-of-live-IPTV-programs-caused-by-mismatch-between-the-OLT-multicast-mode-and-the-ONU-multicast-mode/thread/394777-875
https://www.youtube.com/watch?v=_hRzQpGOQLU

Paul S.I. Basondole

IT & Network Expert / Lead
Network & Automation designer;
2x JNCIP (RS/SP) 1x CCNP (RS)
BSc Telecommunications Eng.
© 2019 basondole.io

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