问题描述：
有这样一个问题，有两台交换机，交换机A和交换机B这两台都开了igmp，交换机A开启了igmp_snooping querier，交换机B没开，两台交换机通过单芯的单模光纤串联，短距离串联，同一机房内，给给交换机A直接接入一路源，从交换机B可以拉到这个流，交换机A从交换机C取源交换机B就拉不到流了，交换机C未做过任何配置，这时候在交换机B用于串联的口上配了igmp-snooping static-router-port vlan 20这个命令，目前交换机A和B都可以拉到流交换机A和B都开启igmp-snooping querier ，长距离串联，设备在两座楼里，交换机B拉不到流，网络是通的，Ping两台交换机上的设备可以Ping通，将其中一台换成交换机C，可以拉到流这个和哪块有关系？这个是哪块的问题？长距离的这个是两台都开启了igmp-snooping querier冲突导致？短距离IGMP Snooping的Mrouter端口学习上，交换机B未学习到Mrouter，导致组播流无法转发到B的接入端口。这个和哪块有关系
组网及组网描述：
交换机A当前配置：
dis cu
#
version 7.1.070, Release 6530P03
#
sysname TS-C
#
irf mac-address persistent timer
irf auto-update enable
undo irf link-delay
irf member 1 priority 1
#
igmp-snooping
fast-leave
global-enable
#
lldp global enable
#
storm-constrain interval 2
#
password-recovery enable
#
vlan 1
#
vlan 20
igmp-snooping enable
igmp-snooping drop-unknown
igmp-snooping version 3
igmp-snooping querier
igmp-snooping query-interval 2
#
stp global enable
#
interface NULL0
#
interface Vlan-interface1
ip address dhcp-alloc
dhcp client identifier ascii 58b38f3db238-VLAN0001
#
interface Vlan-interface20
pim sm
igmp enable
igmp fast-leave
#
interface GigabitEthernet1/0/1
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/2
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/3
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/4
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/5
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/6
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/7
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/8
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/9
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/10
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/11
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/12
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/13
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/14
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/15
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/16
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/17
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/18
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/19
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/20
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/21
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/22
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/23
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/24
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/25
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/26
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/27
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/28
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/29
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/30
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/31
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/32
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/33
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/34
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/35
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/36
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/37
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/38
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/39
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/40
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/41
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/42
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/43
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/44
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/45
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/46
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/47
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/48
port link-mode bridge
port access vlan 20
#
interface M-GigabitEthernet0/0/0
#
interface Ten-GigabitEthernet1/0/49
port link-mode bridge
port access vlan 20
#
interface Ten-GigabitEthernet1/0/50
port link-mode bridge
port access vlan 20
#
interface Ten-GigabitEthernet1/0/51
port link-mode bridge
port access vlan 20
#
interface Ten-GigabitEthernet1/0/52
port link-mode bridge
port access vlan 20
#
multicast routing
#
scheduler logfile size 16
#
line class aux
user-role network-admin
#
line class usb
user-role network-admin
#
line class vty
user-role network-operator
#
line aux 0
authentication-mode password
user-role network-admin
set authentication password hash $h$6$nbRQ8N4LXHRYJF/W$kwwpG+PhOKxdZ0ppDkgBXfSG9zsS7N1KhkGhNQ3ZJ6zw4q1G0ph3yo3lbHXsZ8XhgOB8bZK6/41oYMA91r2mRA==
#
line vty 0 63
user-role network-operator
#
info-center logbuffer size 1024
#
radius scheme system
user-name-format without-domain
#
domain system
#
domain default enable system
#
role name level-0
description Predefined level-0 role
#
role name level-1
description Predefined level-1 role
#
role name level-2
description Predefined level-2 role
#
role name level-3
description Predefined level-3 role
#
role name level-4
description Predefined level-4 role
#
role name level-5
description Predefined level-5 role
#
role name level-6
description Predefined level-6 role
#
role name level-7
description Predefined level-7 role
#
role name level-8
description Predefined level-8 role
#
role name level-9
description Predefined level-9 role
#
role name level-10
description Predefined level-10 role
#
role name level-11
description Predefined level-11 role
#
role name level-12
description Predefined level-12 role
#
role name level-13
description Predefined level-13 role
#
role name level-14
description Predefined level-14 role
#
user-group system
#
return
dis ver
dis version
H3C Comware Software, Version 7.1.070, Release 6530P03
Copyright (c) 2004-2022 New H3C Technologies Co., Ltd. All rights reserved.
H3C S5560X-54C-EI uptime is 0 weeks, 0 days, 6 hours, 1 minute
Last reboot reason : Cold reboot
Boot image: flash:/s5560x_ei-cmw710-boot-r6530p03.bin
Boot image version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
System image: flash:/s5560x_ei-cmw710-system-r6530p03.bin
System image version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
Feature image(s) list:
flash:/s5560x_ei-cmw710-freeradius-r6530p03.bin, version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
flash:/s5560x_ei-cmw710-escan-r6530p03.bin, version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
Slot 1:
Uptime is 0 weeks,0 days,6 hours,1 minute
S5560X-54C-EI 1 Processor with 2 cores
BOARD TYPE: S5560X-54C-EI
DRAM: 2048M bytes
FLASH: 512M bytes
PCB 1 Version: VER.B
Bootrom Version: 119
CPLD 1 Version: 002
Release Version: H3C S5560X-54C-EI-6530P03
Patch Version : None
Reboot Cause : ColdReboot
[SubSlot 0] 48GE+4SFP Plus
交换机B当前配置：
dis cu
#
version 7.1.070, Release 6530P03
#
sysname TS-D
#
irf mac-address persistent timer
irf auto-update enable
undo irf link-delay
irf member 1 priority 1
#
igmp-snooping
fast-leave
global-enable
#
lldp global enable
#
storm-constrain interval 2
#
password-recovery enable
#
vlan 1
#
vlan 20
igmp-snooping enable
igmp-snooping drop-unknown
igmp-snooping version 3
igmp-snooping query-interval 2
#
stp global enable
#
interface NULL0
#
interface Vlan-interface1
ip address dhcp-alloc
dhcp client identifier ascii 58b38f3dbc60-VLAN0001
#
interface Vlan-interface20
pim sm
igmp enable
igmp fast-leave
#
interface GigabitEthernet1/0/1
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/2
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/3
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/4
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/5
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/6
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/7
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/8
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/9
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/10
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/11
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/12
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/13
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/14
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/15
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/16
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/17
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/18
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/19
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/20
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/21
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/22
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/23
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/24
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/25
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/26
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/27
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/28
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/29
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/30
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/31
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/32
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/33
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/34
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/35
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/36
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/37
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/38
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/39
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/40
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/41
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/42
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/43
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/44
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/45
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/46
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/47
port link-mode bridge
port access vlan 20
#
interface GigabitEthernet1/0/48
port link-mode bridge
port access vlan 20
#
interface M-GigabitEthernet0/0/0
#
interface Ten-GigabitEthernet1/0/49
port link-mode bridge
port access vlan 20
igmp-snooping static-router-port vlan 20
#
interface Ten-GigabitEthernet1/0/50
port link-mode bridge
port access vlan 20
#
interface Ten-GigabitEthernet1/0/51
port link-mode bridge
port access vlan 20
#
interface Ten-GigabitEthernet1/0/52
port link-mode bridge
port access vlan 20
#
multicast routing
#
scheduler logfile size 16
#
line class aux
user-role network-admin
#
line class usb
user-role network-admin
#
line class vty
user-role network-operator
#
line aux 0
authentication-mode password
user-role network-admin
set authentication password hash $h$6$HBi2WEaplze6etuY$lJfiwjLGdYW918+vRWN7zCzwYduFvcLwRRdn1sU3kevabKmwy6ii84ocKJWTo4vU71BgCnU2l3ZSHNR95Wo+xA==
#
line vty 0 63
user-role network-operator
#
info-center logbuffer size 1024
#
radius scheme system
user-name-format without-domain
#
domain system
#
domain default enable system
#
role name level-0
description Predefined level-0 role
#
role name level-1
description Predefined level-1 role
#
role name level-2
description Predefined level-2 role
#
role name level-3
description Predefined level-3 role
#
role name level-4
description Predefined level-4 role
#
role name level-5
description Predefined level-5 role
#
role name level-6
description Predefined level-6 role
#
role name level-7
description Predefined level-7 role
#
role name level-8
description Predefined level-8 role
#
role name level-9
description Predefined level-9 role
#
role name level-10
description Predefined level-10 role
#
role name level-11
description Predefined level-11 role
#
role name level-12
description Predefined level-12 role
#
role name level-13
description Predefined level-13 role
#
role name level-14
description Predefined level-14 role
#
user-group system
#
return
dis ver
^
% Ambiguous command found at '^' position.
dis ver
dis version
dis version
H3C Comware Software, Version 7.1.070, Release 6530P03
Copyright (c) 2004-2022 New H3C Technologies Co., Ltd. All rights reserved.
H3C S5560X-54C-EI uptime is 0 weeks, 0 days, 6 hours, 3 minutes
Last reboot reason : Cold reboot
Boot image: flash:/s5560x_ei-cmw710-boot-r6530p03.bin
Boot image version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
System image: flash:/s5560x_ei-cmw710-system-r6530p03.bin
System image version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
Feature image(s) list:
flash:/s5560x_ei-cmw710-freeradius-r6530p03.bin, version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
flash:/s5560x_ei-cmw710-escan-r6530p03.bin, version: 7.1.070, Release 6530P03
Compiled Oct 28 2022 11:00:00
Slot 1:
Uptime is 0 weeks,0 days,6 hours,3 minutes
S5560X-54C-EI 1 Processor with 2 cores
BOARD TYPE: S5560X-54C-EI
DRAM: 2048M bytes
FLASH: 512M bytes
PCB 1 Version: VER.B
Bootrom Version: 119
CPLD 1 Version: 002
Release Version: H3C S5560X-54C-EI-6530P03
Patch Version : None
Reboot Cause : ColdReboot
[SubSlot 0] 48GE+4SFP Plus
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