李熙,OLT板卡上二层组播不通的排查案例
组网及说明
组播源 -核心 -（ bagg1） S7510X（ olt1/2/0/18） -（ 10口） ET358-P（ 8口） -IPTV盒子 ，业务vlan是300
告警信息
不涉及
问题描述
EPON环境下配置二层组播，修改成igmp-snooping的模式，连igmp表项都无法形成
过程分析
1、IGMP-Snooping模式下，ACL匹配239.11.0.0/16，应用在了OLT1/2/0/18接口进和出方向；
OLT上无任何IGMP-snooping表项
（1）、 停留在盒子系统的首页
（2）、进入直播频道后的流统
2、设备上debug看仅有查询报文，没有成员加入报文，这是未形成表项的原因，那么问题就可能出现在onu或者IPTV盒子上；
<ZYCY-XYW-OLT-H3C.S7510X>*Sep 17 15:23:13:582 2022 ZYCY-XYW-OLT-H3C.S7510X MCS/7/PACKET: -MDC=1-Chassis=2-Slot=10; The packet which receive from global port Bridge-Aggregation1 on VLAN 300 that send to main slot. (MCS366538)
*Sep 17 15:23:13:558 2022 ZYCY-XYW-OLT-H3C.S7510X MCS/7/PACKET: -MDC=1; Receive IGMPv2 general query packet which source IP 192.168.255.245 from port Bridge-Aggregation1 on VLAN 300. (MCS361399)
*Sep 17 15:23:13:558 2022 ZYCY-XYW-OLT-H3C.S7510X MCS/7/PACKET: -MDC=1; The IGMP packet which receive from port Bridge-Aggregation1 on VLAN 300 on Main slot, forward it locally. (MCS365367)
3、经过分析ET358-P属于1g的onu，1g的onu上行的组播不带vlan tag（10g的onu不涉及）。
解决方法
规避方法是在onu上配置pvid 300或者在olt上放通vlan 1
interface Olt1/2/0/18
description 5-5宿舍
port-isolate enable group 1
using onu 1 to 24
port link-type hybrid
undo port hybrid vlan 1
port hybrid vlan 300 to 301 1001 to 1016 1203 2001 to 2016 3900 4093 tagged
port hybrid vlan 39 129 untagged
vlan mapping nest range 2001 to 2016 nested-vlan 39
vlan mapping nest range 1001 to 1016 nested-vlan 129
interface Onu1/2/0/18:10
description 5-5-1F外籍公寓-12
bind onu-id 98a9-2d48-9d85
management-vlan 4093
undo shutdown management-vlan-interface
onu protocol transparent-multicast dest-mac 0100-ffff-ffff
ip address 10.100.2.6 255.255.255.0 gateway 10.100.2.254
uni 1 vlan-mode translation pvid 1203 11 to 1010 12 to 2010
uni 2 vlan-mode tag pvid 2010
uni 3 vlan-mode tag pvid 2010
uni 4 vlan-mode tag pvid 2010
uni 5 vlan-mode tag pvid 2010
uni 6 vlan-mode tag pvid 2010
uni 7 port-isolate
uni 7 multicast-strip-tag enable
uni 7 vlan-mode tag pvid 300
uni 8 port-isolate
uni 8 multicast vlan 300
uni 8 multicast-strip-tag enable
uni 8 vlan-mode tag pvid 300
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 300 1010 1203 2010 3900 4093
igmp-snooping fast-leave vlan 1 to 4094
