VLAN multicast

Hey Guys,
I am trying to setup multicast on my CISCO 6500 Switch.
Scenario: Server (SCCM/WDS for OS deployment) and clients(PC) are in same vlan121 of Switch 6500.
Objective: Need to setup multicast so clients's fall in the multicast group receives the stream(OS deployment) from server.
Can anyone assist me whats should be the best configuration for it.
SW1#show running-config interface vlan 121
Building configuration...
Current configuration : 433 bytes
interface Vlan121
description *** PXE Boot ***
ip address 10.50.130.2 255.255.255.0
ip helper-address 10.50.255.10
ip helper-address 10.48.15.230
ip helper-address 10.50.73.54
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip pim sparse-dense-mode
standby 30 ip 10.50.130.1
standby 30 timers msec 250 msec 750
standby 30 priority 110
standby 30 preempt delay minimum 300
arp timeout 300
end

You don't say what IOS/supervisor you are running but if you only need multicast within that vlan ie. no need to route the multicast traffic between vlans then you need -
1) IGMP snooping must be enabled (it should be by default)
and
2) you need something to make the IGMP queries. As you are not routing the traffic then you can use the IGMP snooping querier function. See this link for configuration details -
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/snooigmp.html#wp1119663
Jon

Similar Messages

Multicast Mroute behavior for local VLAN multicast (with overlap)

We have a multicast address that exists at various locations but we want to isolate them at each location to a single VLAN. We run PIM Sparse with anycast RP throughout our Enterprise. Our original thought was to just turn off PIM on the SVI/VLAN at a campus and isolate that multicast to the VLAN it is in.
We are still learning the Multicast address via PIM from the other sites we have not turned PIM off yet (since it is an overlapping address). The question came up that if you disable PIM for that VLAN/SVI would the multicast stay local if the default gateway for that VLAN still has a multicast route it learned via PIM from another site? Or would that VLAN without PIM still use the mroute table to connect to the Multicast address?

Paul
Sorry, i didn't realise this was addressed to me.
To be honest i have never used this command but reading up on it it would seem you certainly could block the flow of multicast packets between the interface for the group(s) you wanted to so it would be a way of isolating traffic between vlans.
In terms of the RP announcement messages there is a keyword you can add to the command "filter-autorp" which filters discovery and announcement messages as well. But i wouldn't like to say for sure exactly how it would or wouldn't work without testing ie. do you need to filter the RP announcements before they reach the SVI or would it work applied to the SVI.
I could see a use for this if you had a number of SVIs that needed to route the multicast stream between themselves but not to other L3 subnets. But the topology would be a little difficult on a L3 switch ie. if half the SVIs need to route the multicast stream but the other half didn't where do you apply the command. It would have to be on each SVI you didn't want to receive the stream.
It would work better if, for example, you had a L3 switch connected to a router with L3 routed ports and all the SVIs should route the multicast stream but it should stay local to the L3 switch so it is blocked on the L3 uplink (and other potential streams from the router to the L3 switch blocked as well).
Hope that made some sense. It's sometimes difficult to explain things without a diagram
Jon

Imaging Multicast 3com 4924 VLan

I have a environment vlan in switch 4924 each port is a vlan that conetct
a other switch that can be a flood.
Multicast funciotionaly very well f client is in same segment where
server reside, but if host client to be in other segment vlan, multicast
traffic cannot walk to other segment.
I have free port 67, 68 that allows traffic broadcast DHCP.
Which version of IGMP use Multicast imaging?
Someone can tell me how resolve this problem?
Thanks for your time
Note
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Multicasting Issues - MDT 2013 - Server 2012 R2

Hello!
I'm having some issues with multicasting on a large university network. Our setup is like this:
WDS role setup on VM with Server 2012 R2
Deployment shares hosted on the same VM - Using MDT 2013 to manage Deployment Shares
VM is on a different VLAN from client computers. - IP Helpers to connect between the VLANs
Multicast namespace was created successfully.
All switches between server and client are managed, IGMPv3 compatible, and have snooping enabled3
MDT Images are custom WIMs, with no setup files
When I run a deployment on any number of clients, I get the message saying "Attempting multicast transfer". The clients show up listed in the WDS Multicast Transmission. Then the clients drop off the server, and begin unicasting. Unicast speeds
are excellent. Our 10GB images copy in about 10 mins. But we plan to do 30-40 systems at a time, and I believe that could cause some issues with so many individual sessions running...
I've noticed under our network adapter properties that Microsoft Network Adapter Multiplexor Protocol is unchecked. Not sure if that is related?
I have copied multicast information from the BDD.log file on one of the failed clients. That can be found below.
Any help/advice will be greatly appreciated! Thank you!
Edit: I likely posted this to the wrong place. I have reposted this to the MDT forum. Thanks!
<![LOG[LTI applying image \\BRYANTWDS-SERV1\CopyToDrives$\Operating Systems\Windows 7 (x64) - Vers 4\Windows 7 (x64) - 4.0.wim using ImageX]LOG]!><time="14:42:33.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[Event 41023 sent: LTI applying image \\BRYANTWDS-SERV1\CopyToDrives$\Operating Systems\Windows 7 (x64) - Vers 4\Windows 7 (x64) - 4.0.wim using ImageX]LOG]!><time="14:42:33.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[Property SourcePath is now = \\BRYANTWDS-SERV1\CopyToDrives$\Operating Systems\Windows 7 (x64) - Vers 4]LOG]!><time="14:42:33.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[Multicast transfer to directory: C:\MININT\Operating Systems\Windows 7 (x64) - Vers 4]LOG]!><time="14:42:33.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[<Message containing password has been suppressed>]LOG]!><time="14:42:33.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[Command has been started (process ID 504)]LOG]!><time="14:42:33.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ZTI Heartbeat: command has been running for 0 minutes (process ID 504)]LOG]!><time="14:42:34.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[Event 41003 sent: ZTI Heartbeat: command has been running for 0 minutes (process ID 504)]LOG]!><time="14:42:34.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console >
]LOG]!><time="14:42:34.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console > Windows Deployment Services Multicast Client [Version 6.3.9600.17237]
]LOG]!><time="14:42:34.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console > Copyright (c) Microsoft Corporation. All rights reserved.
]LOG]!><time="14:42:34.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console >
]LOG]!><time="14:42:34.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console >
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console > Transfer Started.
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console >
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console > Transfer Complete [0x800705B4].
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console >
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console > Operation Failed. [0x800705B4].
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console >
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console > This operation returned because the timeout period expired.
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console >
]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[ Console > ]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[Return code from command = -2147023436]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">
<![LOG[Multicast transfer could not be completed, rc = -2147023436, falling back to using \\BRYANTWDS-SERV1\CopyToDrives$\Operating Systems\Windows 7 (x64) - Vers 4\Windows 7 (x64) - 4.0.wim]LOG]!><time="14:43:04.000+000" date="02-04-2015" component="LTIApply" context="" type="1" thread="" file="LTIApply">

Hi Kyle T.Johnson,
Could you try to put a test client to your WDS server VLAN then monitor this issue again.
Best Regards.
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Multicast error 0x80091007

When using multicast in same VLAN as ConfigMgr server is it works fine. When I try to use multicast in other vlan, multicast session starts but fails almost immediately with error 0x80091007.
In problematic VLAN computers might not resolve ConfigMgr server with shortname. Could it cause this problem?

Hi,
Any updates?
Best Regards,
Joyce
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Multicasting on Cat4507 - wrong feature set ???

Hello gurus,
I've been trying to enable inter-vlan multicast on Cat 4507 switch. Now I've read, that all you need is
"ip multicast-routing" and "ip pim parse-mode" for interfaces on switch. First command works fine, the second - doesn't : here is a reply from switch
switch(config)#int Gi1/1
switch(config-if)#ip pim ?
% Unrecognized command
switch(config-if)#ip ?
Interface IP configuration subcommands:
access-group Specify access control for packets
arp Configure ARP features
dhcp DHCP
igmp IGMP interface commands
verify verify
Is it just a problem with feature set or am I missing something ?
Thanks,
Alex

Hello Alex,
you need a layer 3 to configure multicast on, e.g. a VLAN interface:
interface Vlan2
ip pim sparse-dense-mode
HTH,
GP

MPLS, VPLS, MAC-in-MAC Ideas for my application

Hi,
I have a provider that serves me a 100mb/s Ethernet port, Single VLAN, between two locations. They block important traffic to me like STP BPDU's, VTP etc..
What technology can I use to take everything, STP, VLANs, Multicast etc.. and encapsulate it and get it all back out on the other side?
Can I use point to point MPLS with two low cost routers?
My provider only has Ethernet in the core. They use Ethernet switches as a CPE Demarc on both sides and an Ethernet Switch cloud core.
Thank you.

L2TP is not the same as QinQ (also known as vlan stacking, etc).
First make sure your PVLAN has enough MTU to support the inner instance of 802.1q
vlan 2
name Your_PVLAN
mtu 1504
interface GigaEthernet1/1
description Uplink to Your LAN
switchport
switchport access vlan 2
switchport mode dot1q-tunnel <<< This is the magic
switchport nonegotiate
mtu 9216
no ip address
l2protocol-tunnel cdp << The rest of the magic
l2protocol-tunnel stp <<
l2protocol-tunnel vtp <<
no cdp enable
spanning-tree bpdufilter enable << Recommended
On your uplink you only need to be able to transit VLAN2.
This is one way. There might be others.

APPLETV and mDNS - Turn OFF mDNS it works, Turn it on it doesn´t?!?!?!?

Hi guys!
I´m having a strange morning. We switched from 7.2.x code to 7.4.121.0 on our 5508 WLC. And Today I get a call that the apple tv´s aren´t visible any more.
Quick check into the MDNS profiles, I see each and every one. Quick check on my iphone to my test appletv - that works too. But it is the only ATV I can actually see.
- I can only see the atv when it is connected to the same Accesspoint, if I roam it vanishes.
- If I turn OFF the MDNS Settings - I see every atv in the building!!!
I configured everything according to: http://www.cisco.com/c/en/us/td/docs/wireless/technology/bonjour/Bonjour74.pdf but somehow it is not working.
Settings:
(yes the mDNS global is enabled in the tests ;) )
I can see the ATV´s on the WLC:
When it is enabled I can only see the Apple tv that is connected wirelessly to the same AP I´m connected to! So none of the wired devices!
I have enabled the DNS Snooping in the advanced settings for the WLAN. I have also found an extra MDNS Snooping for the Interfaces itself, which wasn´t activated. But activating it, didn´t help a thing. I also tried deactivating the VLAN Multicast feature that was needed in 7.2.x but also to no avail.
HELP! Any Idea what might be running amok here? Everything was working without a hitch in 7.2.x and I thought the 7.4.121.0 would be a blast, because easier, better and such :D Thanks alot for your help!

o.k. thats abit stupid. I had a brain freeze. But just to follow up on this:
If your MDNS Profile that is used for the snooping DOESN´T have the airtunes part included. It won´t work. Just because the general option is choosen, doesn´t do diddly swat for the wlan itself. Guess thats an error I just had to make ;)
Problem solved!

LGS308 problem with vlan and multicast

Hello,
I have a LGS308 smart switch and am having problems putting multicast traffic on a specific vlan.
The switch is connected to a PC for management (vlan 1).
All ports are in acces mode, vlan 1 untagged.
I created vlan 2 and put it untagged on port 7 and 8.
Now, when I connect a multicast device (IPTV) on port 8, the switch becomes unresponsive and nothing works.
It seems the switch is flooded with multicast traffic.
Simply turning IGMP snooping on didn't help so I think it needs more configuration.
Is this a known problem?
ps: Once I have this simple setup running I'm planning for a more advanced setup with trunking 2 vlans (iptv + internet) to another switch over a single UTP cable. But first things first

Yes it should!
I have changed the setup like this:
Switch 1
port 1 - access mode - vlan 1U <---> Internet
port 2 - access mode - vlan 1U <---> PC
port 7 - access mode - vlan 2U <---> IPTV source (IGMP)
port 8 - trunk mode - vlan 1T + 2T <---> switch 2 port 8
Switch 2
port 7 - access mode - vlan 2U <---> IPTV source (IGMP)
port 8 - trunk mode - vlan 1T + 2T <---> switch 2 port 8
With this setup, I can reach both switches from my PC.
However, multicast doesn't work. I don't get IPTV on switch 2 port 7.

Vlan Select & Layer 2 Multicast optimization

I am going to implement this vlan select feature in my campus network. We are running on 7.3 & planning to move into 7.4 WLC code as well. I use below reference document for this task.
WLC 7.2 VLAN Select and Multicast Optimization Features Deployment Guide
I am bit confuse about layer 2 multicast optimization. Document says we can enable/disable by using below CLI commands. "
config network multicast l2mcast <enable|disable > <interface>"
I have 4 interfaces called student-wireless-1 to 4 (vlan 1161-1164) map into single interface group. For layer 3 multicast I will make vlan 1161 as the multicast interface with "multicast vlan feature" enabled. For layer 2 what should I do ? Is layer 2 multicast enable on all these interfaces by default ? If so should I disable l2 multicast on 3 of these interfaces like below ? Would there be any issue of disabling this layer 2 multicast on those interfaces ?
config network multicast l2mcast disable student-wireless-2
config network multicast l2mcast disable student-wireless-3
config network multicast l2mcast disable student-wireless-4
If it is not enabled by default, shoud I go ahead enable it on one interface like below ?
config network multicast l2mcast enable student-wireless-1
If someone can explain this that would be highly appreciated.

Thanks for the help but I found some further information. Some switches (2955, 2960, 3560 or 3750) can act as a "multicast querier", taking place of a multicast router without actually needing to support multicast routing. This means you dont actually need IP Services IOS or a layer 3 switch.
Configuation as per below;
http://www.cisco.com/en/US/customer/products/hw/switches/ps5528/products_configuration_guide_chapter09186a00803a9a29.html#wp1187873
Supported platforms below (look for igmp querier);
http://www.cisco.com/en/US/customer/tech/tk828/technologies_tech_note09186a0080122a70.shtml#topic3
Thanks for putting me on the right track however.

Multicast Does not work between different VLANS

Hi,
I have problems with multicast. On the same VLAN i can see the SAP announcement in VLC and play, but on different VLAN i can see SAP but i cant play it. The play turn to pause and the video doesn´t appear.
I have 2 Cisco 6500 switch CORE with GLBP configured but not working. In the second switch i have all interfaces in shutdown. The first core switch have L3 routing enable.
The Global configurations:
ip multicast-routing.
I have the transmitter PC on vlan 51 i transmit to 230.0.0.50 group an im trying to recive on vlan 80. The vlans configurations are:
Vlan 51
ip address x.x.31.254 255.255.255.0
ip pim sparse-dense-mode
Vlan 80
ip address x.x.80.1 255.255.255.0
ip pim sparse-dense-mode
I have 2 Cisco 2960 (L2 only) for the access.
The principal commands outputs are:
CORE1#show ip mroute | inc 230.0.0.50
(*, 230.0.0.50), 01:50:50/00:02:21, RP 0.0.0.0, flags: DC
CORE1#
CORE 1
interface Vlan1
ip address x.x.1.1 255.255.0.0
ip access-group 101 out
no ip unreachables
ip pim sparse-dense-mode
mls rp ip
interface Vlan51
ip address x.x.31.254 255.255.255.0
ip access-group 151 out
ip helper-address x.x.x.x
ip helper-address x.x.x.x
no ip unreachables
ip pim sparse-dense-mode
mls rp ip
interface Vlan80
ip address x.x.80.1 255.255.255.0
ip access-group 150 out
no ip unreachables
ip pim sparse-dense-mode
glbp 80 ip x.x.80.254
glbp 80 timers 5 18
glbp 80 timers redirect 600 7200
glbp 80 priority 254
glbp 80 preempt delay minimum 60
glbp 80 authentication text glbpkey
glbp 80 forwarder preempt delay minimum 60
CORE2
interface Vlan1
ip address x.x.1.4 255.255.0.0
ip access-group 101 out
no ip unreachables
ip pim sparse-dense-mode
mls rp ip
interface Vlan51
ip address x.x.31.2 255.255.255.0
ip access-group 151 out
ip helper-address x.x.x.x
ip helper-address x.x.x.x
no ip unreachables
ip pim sparse-dense-mode
shutdown
mls rp ip
glbp 51 ip x.x.31.254
glbp 51 timers 5 18
glbp 51 timers redirect 600 7200
glbp 51 preempt delay minimum 60
glbp 51 authentication text glbpkey
glbp 51 forwarder preempt delay minimum 60
interface Vlan80
ip address x.x.80.2 255.255.255.0
ip access-group 150 out
no ip unreachables
ip pim sparse-dense-mode
shutdown
mls rp ip
glbp 80 ip x.x.80.254
glbp 80 timers 5 18
glbp 80 timers redirect 600 7200
glbp 80 preempt delay minimum 60
glbp 80 authentication text glbpkey
glbp 80 forwarder preempt delay minimum 60
end
Someone can help?
Thanks,
Alfredo

Hi johnd...
Im using VLC 1.1.2 (i can not update because i have a DVDT2 card to capture the digital terrestrial television and it only work in this version). I have all the firewalls down.
This is the output for the show ip igmp snooping groups on the 2960.
80 230.0.0.50 igmp v2 Gi1/0/21, Gi1/0/24
Port G1/0/21 is where the receiver is conected and the 24port is the trunk.
Jon, i revert and this is the output. I put the ip pim rp-address the same of the lookpback that i create previously.
(*, 230.0.0.50), 00:37:46/00:02:19, RP 192.168.230.230, flags: SJC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan80, Forward/Dense, 00:09:52/00:00:00
The strange thing is that I have more than 40 vlans and it only fail in some vlans like 80.

Multicast within a VLAN

I am setting up a multicast application within a particular VLAN. What commands if any are necessary for this to work.
IGMP snooping is anabled by default...Does IGMP need to be enabled on the VLAN interface for this to work?
Is there a way to view the IGMP snooping tables?

If you have a 6513, IGMP snooping is enabled by default. It is still a good idea to enable multicast routing and PIM on the VLAN interface to constrain multicast traffic. Or you can enabled IGMP querier if you are running newer software.
http://www.cisco.com/warp/public/473/38.html

Multicast VLAN Registration Cannot Create Interface in MVR Type Receiver

Hi all:
I tried to create MVR type receiver in the a port in switch 2960X but it pops out error that the port is in mVLAN and cannot be done.
The port is in the same VLAN (default VLAN 1) as the ports which I have set to MVR type source. I tried other ports and they are having the same problem. Ports set to MVR type receiver are OK in the same VLAN.
I tried to disable the VLAN 1 as a Multicast VLAN but the same problem still happens. When I create another VLAN 2 and set the port access to VLAN 2, after that set the port to MVR type receiver, it is OK. The problem is I have to set the port type source and receiver in the same VLAN, may I know how to resolve this problem?
Many thanks!

Very helpful document for Upgrading from 4.6C to ECC6:
[Considerations when upgrading SAP Business Workflow from SAP R/3 4.6C to SAP ERP 6.0|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/103b1a61-294f-2a10-6491-9827479d0bf1]
I just wish I found this BEFORE the upgrade is almost done... Would have saved me a lot of time.
Especially check if you have program RSWDVERCNT in your system (if not, see note 1058159).
This will check for incorrect references to data elements.
Also check if RSWFEVTXPRA has been executed.
Maybe your issue is related to Note 775111 - Unicode problem in BOR container?

Multicast issues through L2 Switched Vlan

Hi,
I have attached a high level design diagram which represents the network topology and multicasting is introduced on the network for camera streams. For multicast using “sparse-dense-mode” and OSPF is used as the routing protocol.
Multicast works good when we had a single receiver “Receiver-1” and this receiver is connected to a access switch which directly connects to the core 6500 switch through a L3 Vlan. Mroutes looks good and works as expected.
When a second receiver “Receiver-2” was introduced on the network and the configuration is no different to the previous configuration and the receiver is not getting any streams and the multicast doesn’t work as expected. The only difference between is the presence of a L2 switch which acts as a bridge between the Access and the Core 6500 switch.
I believe, the simplest option is to enable routing and multicast on the switch called “Core-2” instead of using it as a L2 transparent switch. But, I would like to explore the possible options before enabling multicast throughout the network.
Your thoughts and help will be highly appreciated.
Thanks
Rajesh

Hi,
If Core-2 is pure L2 switch and we are running PIM between C-3750-2 and Core-1, it should not play any role in forwarding multicast traffic. Please share
from Core-1,C-3750-1 and C-3750-2
- show ip mroute <group>
- show ip pim nei
- show ip pim rp mapping
From C-3750-1 and C-3750-2
- show ip igmp group
Regards,
Akash

3750 multicast flood in source vlan

I have issue with following configuration:
two ports in same vlan. Multicast traffic received over one of interfaces got flooded to second one.
Sample config:
interface GigabitEthernet1/0/20
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,15
switchport mode trunk
interface GigabitEthernet2/0/20
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,15
switchport mode trunk
interface Vlan10
ip address 10.1.1.1 255.255.255.252
ip pim sparse-dense-mode
no ip mroute-cache
Here I receive multicast data over g2/0/20 and it gets flooded out of g1/0/20. Though all receivers are in separate vlans, not in vlan10. IGMP snooping is on and sh ip igmp membership doesn't list any of these interfaces.
Thanks.

Thanks.... Can you point me to appropriate cisco docs?
An what you can advise me in doing here? The problem is that I need to receive multicast from both interfaces in vlan 10 but for different groups and I don't want to have all data I receive over one link to get flooded to another one. Also seems I have no way to get rid of trunk here...

VLAN multicast

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