Hello,
I have a VSS with 2x 4500x (Release 3.4.0SG ED) and 3750x (Release 12.2.58.SE2) access switches.
Two multicast streamers are connected to core switches and boxes are connected to access switches.
IGMP Querrier is configured on Core and fast-leave on access. All equipment are in the same VLAN so i didn't configure multicast routing on the SVI.
On the core switch, i see all the groups (90x) who are diffused by the streamers on the interface of the streamer.
But when i do a wireshark capture on the etherchannel who is going to my access switches, i see all groups diffused!
I don't understand why multicast traffic are diffused on link who not belong to the IGMP group.
Do you have an idea ?
Some commands of the core switchs :
RSW01-MDF1#show ip igmp snooping groups vlan 300
Vlan Group Version Port List
---------------------------------------------------------
300 239.1.1.12 v2 Te1/2/4
300 239.1.1.21 v2 Te2/2/2
300 239.1.1.23 v2 Te2/2/2
300 239.1.1.27 v2 Te2/2/2
... (x90)
RSW01-MDF1#show int | i Des|bits
Description: To_SW01-05_1:Po24
5 minute input rate 5094000 bits/sec, 868 packets/sec
5 minute output rate 43043000 bits/sec, 4422 packets/sec
...
RSW01-MDF1#sh ip igmp snooping vlan 300
Global IGMP Snooping configuration:
-------------------------------------------
IGMP snooping : Enabled
IGMPv3 snooping : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Last member query interval : 1000
Vlan 300:
--------
IGMP snooping : Enabled
CAPWAP enabled : Disabled
IGMPv2 immediate leave : Disabled
Explicit host tracking : Enabled
Multicast router learning mode : pim-dvmrp
CGMP interoperability mode : IGMP_ONLY
Last member query interval : 1000
RSW01-MDF1#show run
(...)
ip igmp snooping querier
!
interface Port-channel24
switchport
switchport trunk allowed vlan 5,10,100,120,200,210,300,410,430,450,580,600,610
switchport mode trunk
load-interval 30
ip dhcp snooping trust
!
interface TenGigabitEthernet1/1/15
switchport trunk allowed vlan 5,10,100,120,200,210,300,410,430,450,580,600,610
switchport mode trunk
udld port aggressive
channel-group 24 mode active
service-policy output EGRESS-QUEUING
ip dhcp snooping trust
!
interface TenGigabitEthernet2/1/15
switchport trunk allowed vlan 5,10,100,120,200,210,300,410,430,450,580,600,610
switchport mode trunk
udld port aggressive
channel-group 24 mode active
service-policy output EGRESS-QUEUING
ip dhcp snooping trust
!
interface Vlan300
description IPTV
ip vrf forwarding IPSERVICES
ip address 10.3.3.254 255.255.252.0
no ip redirects
no ip unreachables
no ip proxy-arp
!
(...)
Thanks.
