Cisco Switching/Routing :: 2960 - Local Multicast Range Is Not Passing Between Sites

Jan 29, 2012

[URL]
 
We found out that only local multicast ip address range is not passing between the sites, any other range is passing, local range is 239.0.0.0 and above.
 
We have two different datacenters, the internal switch is 2960S (Stacked) with 1-10 vlans and the external switch is 3560E, the external switch is adding another tag (qinq, dot1q), vlan 611, and send the packets to metro line to the other site.
 
on the other site we have the same configuration.
 
internal switch from site A is configured with igmp querier and the internal switch port on site B connected to the external switch is configured as mrotuer port.
 
multicast and igmp is passig between the sites, but the local multicast range is not passing, igmp filterring is configured on all port but no profile is defined and no ports are filterred, on the external switch igmp snooping is disabled.

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Cisco Switching/Routing :: 2960 Drops Multicast Receiver

Jun 17, 2012

A 2960G switch is doing IGMP snooping and is configured as the querier. There is no multicast routing.

Port 1 - Video Set Top Box A
Port 2 - Video Set Top Box B
Port 3 - Multicast Source
 
Both Set Top Boxes A & B are set to receive the video delivered in the same multicast group.Every 60 seconds the switch generates an IGMP General Query message which is sent out all the ports in the VLAN.There is a 10 second timeout in the Query message. Devices that wish to join (or remain joined) to the multicast group have this amount of time to respond with a Join Message directed at the multicast group. Devices deliberately wait a random duration within the timeout time before replying.
 
For some reason (which I don't understand), if the switch receives a Join request message from a Set Top Box, it forwards that messages out of the port to the other Set Top Box. So, let's say Box A responded with the Join Message first. Box B now sees the Join message and now thinks there is another multicast receiver on its branch of the network, so it suppresses its Join Message to avoid sending an unnecessary message.If by chance Box A responds first 2 or 3 times in a row, the switch will not have seen a response from port 2 for awhile, so it prunes that port from the multicast. Eventually, Box B responds first and gets re-joined onto the multicast. It is now Box A that may get pruned if it is consecutively slower.
 
How do I prevent the switch from replicating the Join message out to the other Set Top Box? I have verified this behavior with Wireshark. But, I believe the Join message is only supposed to be forwarded to a multicast router (if there is one - and there isn't), not to other ports.The 2960 is running 12.2(58) SE2.

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Cisco Switching/Routing :: 2960 - Test Multicast Traffic

Dec 6, 2012

Attached setup i am planning for testing multicast output from different vendors using  VLC and STB.  This Setup made to test the picture quality between the vendors at the same time on the multi viewer screen. 

1) Only a 2960 Gig port switch with only one L2 v lan with IGMP snooping enabled. 
In this scenario where Source and receivers are in the same L2 v lan ( no L3 interface is involved) hope i would able to test all the multicast sources with out any additional configuration on the Cisco switch.

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Cisco Switching/Routing :: 2960 / 6513 - Multicast Between VRF On Same Switch

Sep 3, 2012

I am working on Multicast scenario, There is one 6513E switch one 2960 switch. Two VRF's are configured in core switch (6513) IPTV-SRV and Villa-VRF IPTV-SRV vrf has IPTV server and Villa-VRF has IPTV i.e. client.
 
V LAN 30 is mapped to IPTV-SRV vrf with subnet address 192.168.30.0/24
V LAN 12 is mapped to Villa-VRF with sub net address 192.168.12.0/24
 
I did the following configuration for VRF but its not working . i am not an expert in multicast design but seems i did most of the configs.
 
ip vrf IPTV-SRV
rd 30:1
mdt default 232.1.1.1
route-target export 30:1
route-target import 10:1
[code]...

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Cisco Switching/Routing :: Enable Multicast On 2950 / 2960 Series Switches?

Dec 8, 2011

How do you enable multicast traffic on 2900 series switches?

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Cisco Switching/Routing :: 2960 / Local Subnet MAC Lock-down?

Feb 14, 2012

we have some devices on the network which cannot be secured and we need to isolate from the rest of the subnet.Our switches are Cisco 2960.Is it possible to via an ACL local a specifric port down to only allow traffic from specific MAC addresses?  I've had a go at this myself but not been able to make any progress.  The traffic type is TCP/IP.

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Cisco WAN :: 2911 Multicast Traffic Stops Passing Through Multilink Interface

May 8, 2012

I have configured multicast (ip pim dense-mode) on two 2911 routers that are connected by a Multilink (3Mbps) Wan connection.The configuration work fine for awhile and sometimes all day but at some point one of the Multilink interfaces stop passing multicast traffic.I perform a sh multilink 1 on the interfaces and one interfaces show the multicast packets incrementing and the other does not, it just stops.The only fix for this is to hard reboot both routers and the multicast traffic begins to flow once again.

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Cisco WAN :: 2851 Test Multicast Between Two Sites Connected Over WAN

Jan 31, 2011

I am trting to test multicast between two sites connected over WAN...SIte A is connected to Site B with DS3 link with  ethernet output.The DS3 link is connncteted between cisco 2851 router at each end.At Lan SIde Cisco 2851 router is conncted to Nortel-8600 Switch over ethernet connectivty at both end.PIM is enabled on Nortel-8600 core switch  with Sparse mode and multicast is working fine within LAN.Same is the result for both sites.
 
Now we are trying to make multicast work over wan in which PIM is enabled on both lan & want interafce of cisco router with sparse mode and multicast is enabled globally...now both the routers are making neighbourship with respective lan switches and with each other but multicast traffic is not flowing.In cisco router Mroute is not coming for the multicast group defined in core switch.

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Cisco Switching/Routing :: Add 2960 To Stack Of 4 X 2960 Switches

Feb 7, 2012

I have an existing stack of 4 x 2960-S switches connected by stack cables.I would like to add another 2960-S switch to the stack but am unable to as the 2960-S will only allow 4 x 2960-S switches per stack.how I would add the 5th 2960-S switch to the existing stack of 4 x 2960-S switches.

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Feb 11, 2013

I have a 24 port 2960-S that is not communicating with a 2960-LST that it is directly connected to over fiber.  The link is up on the LST but will not come up on the -S.  What command should I use to bring up this link?  I have tried no shut from the (Config-if)# prompt.         

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Cisco Wireless :: Multicast Group Range 2504 WLC

Jun 16, 2013

2504 wlc,When I open Controller and on the General page, if I make a change and apply it that change does work. But I get a popup message say Multicast Group address should be in range of 224.0.0.0 - 239.255.225.255.

Do I need to but something in there?

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Dec 14, 2011

Cisco Small Business Switch POE ESW-520-24P with a Wireless Access Point Cisco Aironet AP1141. Both the devices are upgraded to the latest firmware.

 Connected to the ESW-520-24P is a Windows 2008 SBS 2011 with DCHP and Domain Controller. Along with the server I have a number of wired computers connected to the switch which do not have any issues and connect to the DHCP server without any problems.

 When connecting two wireless devices to the AP1141, they get the IP address and DHCP from the server; but when connecting other devices apart the first two they will fail to connect to the DHCP server and do not get any IP Address. They manage to connect to the Wireless access point but they cannot contact the DHCP server.

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Jan 16, 2013

I have two WAP4410N plugged into my Catylist 3560 switches.One of these switches is my Default Gateway for the LAN.The only way I can get a device to connect to the WAP4410N is by assigning it a static IP.  Then it works perfectly.

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Feb 19, 2013

I try to pass multicast traffic between two vrf on the same 3750 switch. I have IP services IOS and sdm template routing.
 
here is my config:
 
ip routing
!
ip vrf vpn2
rd 1:1
mdt default 232.1.1.1
route-target export 1:1
route-target import 1:1

[code]....
 
Now I'm stuck - I don't know what to do to pass multicast traffic. Do I have any chance to run this config on 3750 chassis?Perhaps "Configuring Multicast VPN Extranet Support" document will be useful, but it concerns Catalyst 6500? [URL]

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Cisco Switching/Routing :: 4507 Passing A Trunk Through An Access Mode Port

Mar 15, 2012

we have a scenario that consists of a Cisco 4507 series core switch with more than 20 vlans which is connected to a C2960G switch( in a nearby building)  using a trunk by a fiber connection. Up to this point everyhting is fine . VTP domain is configured on the core switch and we have all of the 20 vlans present  correctly on the edge 2960G wich is part of course of this same VTP domain.the fiber connection goes from core switch to a  "in the middle location"  where we have a fiber patch panel that is connected in a jumper style to another fiber patch panel going to the destination building where the C2960G sits.
 
Now imagine that Fiber connection from this middle location to the destination C2960 edge switch is down for any possible reason meanwhile the fiber connection from Core switch 4507 to the middle location is still intact.In the same time, in this middle location , we do have a wireless connection which links 1 Cisco 3750G switche ( a different infrastructure and different VTP domain) to another C3560G switch which sits on the same Room in the nearby destination  building where we have the edge C2960G, An idea came to me is to connect one of the fiber port (core) in the intact fiber patch panel coming from Core switch 4507    TO  an access vlan configured switchport in the 3750G  switch ( this switchport will belong to a vlan designed only to trasmit the vlans on the trunk coming from 4507 core switch say VLAN 10) then connect one VLAN 10 access switchport to the destination C2960 edge switch ( the switchport on the c2960G is still a trunk)Will this solution work and all of the 20- 4507 core switch vlans arrive to the destination C2960G ? Or we do need something that tags the 2 VLAN 10 switchports  like switchport dot1q tunnel like QinQ

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Oct 8, 2012

Has anything changed in the way of defaults for creating a trunk port and spanning-tree between a 3750x and the newer 2960s? I have one of each I just took out of the box and applied my standard switch configuration template but I cannot get my VLANs that are configured on my 3750X to appear on the 2960S. I find nothing that is blocking and everything seems to be forwarding and I am running out of things to check.

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Cisco Switching/Routing :: Intra-VLAN Traffic Not Passing Back To Nexus 5k

Mar 28, 2013

We recently extended our access layer using a pair of 5ks with extenders. We have a pair of 6509s at our core and they handle the intra-VLAN routing with SVIs. I recently noticed that access hosts connected to the extenders cannot pass traffic between each other if they are in different VLANs. The strange thing is these same hosts can ping devices in other VLANs as long as the other devices are not connected to the 5k environment.
 
For example, consider the following hosts. Each host has their gateway set to the appropriate SVI on our core.

HostA - VLAN100 - connected to 5k extender
HostB - VLAN200 - connected to 5k extender
HostC - VLAN100 - connected to 2960 off our core
HostD - VLAN200 - connected to 2960 off our core
 
Each host can ping each other with the exception of HostA and HostB. As for specifics, we use HSRP (no VSS) between our cores.
 
When I ping between hostA and hostB, I see the egress packets on either 5k1 or 5k2. I then see ingress AND egress on Core1. There are no ingress packets on 5k1 or 5k2.The egress packets from Core1 show the correct destination MAC address of the target host. The mac address table shows the mac address on po31.

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Cisco WAN :: 2960 - Block Outgoing Multicast On L2 Port?

Aug 2, 2012

is it possible to block outgonig multicast L2 frames on an Ethernet port in outgoing direction on a 2960 Switch?
 
I tried the "switchport block multicast" command, but the description of this feature relates to only "unknown" multicast!?
 
But what means "unknown multicast"? Even if activated, I see a lot of multicast traffic going out that port: IGMP, PIM, SSDP, HSRP, OSPF, .. and also pings and VLC streams to multicastaddresses (ip igmp snooping disabled).
 
I also tried to map a "mac access-list" to that port, but the "mac access-group" interface command is restricted to only incoming traffic.
 
Reason: we assume, that there are a couple of specific enddevices, that might react strange to some multicast. Therefor we would like to block outgoing multicast on that specific ports.
 
I tested it on a 2960 12.2(53)SE2

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Aug 27, 2012

I have a sge2000p to install with a uc520. I have all data traffic passing ok but voice will not work. Phones to not get ip etc.

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Cisco Switching/Routing :: 6500 / 3560 - Get L2 Traffic Amount (bit / Byte) Passing Through Switch

May 30, 2012

We want to get L2 traffic amount (bit/byte) passing through a cisco switch (6500/3560 ...) for a specific VLAN. it can be via SNMP or CLI ...How can we do that?
 
note: there is no L3 interface on swtiches.

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Cisco WAN :: 4948 / 6509 / 2960 - How To Implement Multicast On Network

Aug 4, 2011

We want to implement multicast on our network. We are going to use for  online teaching purpose. I am very new at Multicast and not have much  idea about it. We are not running any routing protocol in our network,  only static route. The multicast server is located at One of our office  and it is connected with L2 (Cisco 2960) switch, L2 switch is connected  to L3 switch(Cisco 4948). L3(Cisco 4948) and Core Switch(Cisco 6509)  with FWSM are connected with E-3 link with tunnel. Router 1 and Router 2  are connected with P2P ILL links which are terminated at serial  interface. The Multicast Server IP is 192.168.2.131/25. The scenario of  our network are mentioned below:
 
Multicast  Server--->(L2 Switch)--->(L3 Switch)--->(Core  Switch)--->(FWSM)--->(Router 1)---->(Router 2)--->(L2  Switch)--->(Multicast Client)
 
 We  have created a seprate vlan (i.e. vlan 102,   interface IP is 192.168.2.129/25) for multicast at L3 switch, enable  multicast routing, defined rp-address(i.e. 192.168.2.129/25), enable  sparse-dense mode at multicast vlan as well as at some other vlan also  for testing purpose and joined multicast group (i.e. Multicast IP is  224.3.3.5). At core switch we have also enabled multicast routing,  defined rp-address (i.e. 19.268.2.129/25), enable sparse-dense mode at  user vlan and inside vlan of FWSM and joined multicast group at user  vlan and inside vlan. At FWSM we have enabled multicast routing, defined  rp-address(192.168.2.129), doesn’t find any option to enable  sparse-dense mode and joined Multicast group at inside vlan and router 1  vlan. At Router 1, we have configured the same thing. We have  configured mroute at all the devices. We are able to ping from end to  end. We are testing multicast by Multicast IP checker tool (provided by  vendor). Multicast is working fine at L2 switch, L3 switch and Core  Switch, but not from Router 1. Ping is reachable from Router 1. After  doing mtrace at Router 1, the following output has come:
 
Router 1 (Mtrace with destination address 192.168.2.131)
mtrace 172.21.15.2 192.168.2.131 224.3.3.5
 
Type escape sequence to abort.
Mtrace from 172.21.254.50 to 192.168.2.131 via group 224.3.3.5
From source (?) to destination (?)
[Code] .....
 
If , we do mtrace from gateway IP address(i.e. 192.168.2.129) as  destination address then mtrace is getting completed, but if mtrace is  done from Mutlicast server IP address(192.168.2.131) as destination  address, then mtrace is not getting completed.
 
  We  have connected one laptop at Router 1 vlan to test Multicast. The host,  which is connected to Router 1 vlan is able to send multicast packet to  other host and other host at different vlan are receiving it , but it’s  unable to receive multicast packet send by other host of different vlan.
 
Do I need to enable igmp snooping at L2 switch, L3 switch and Core Switch ? I am not able to understand or can't figure out where i have configured wrong.

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Cisco Switching/Routing :: 2821 Multicast Routing Relay Basic

Mar 12, 2013

I  start configuring Cisco 2821 router for multicast . First short  description and attached sheme explanation. Let we say  I have small  network with 100 users. One router and Cisco switch 3560. Two VLAN’s,  one for data another for multicast. Data from internet works fine but  now I want to connect multicast servers (or source of more multicast  streams) from another subnet. Router have three interfaces.I expect there should be no problems with multicast configuration, but unfortunately it is not like I expect. What I did ?

First step:  enable multicast routing

Second step: on both interfaces (Fe 0/1 and Fe 0/2)  - ip pim sparse-mode

Third step: configure switch that users are connected to access port in VLAN 222 (temporary to see if multicast work)
 
When  I start VLC on computer nothing happend. If I try to connect computer  on same subnet where is source of multicast streams it works fine.What  I am doing wrong ? Is there anything about routing ? All subnets are  directly connected. RP is not needed if I have one router or ?

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Cisco WAN :: 3945 - Local Route Eliminates Multicast PHANTOM RP

Nov 4, 2012

i have a problem regarding multicast bidir redudency RP. as we know the redudency RP with bidir is created by the PHNTOM RP-
 
"The  preferred  method  for providing  Bidir  rendezvous  point redundancy  can  be   designed  using
loopback networks with  different mask  length . This  mechanism  relies  on  unicast  routing  longest
match  route  lookups to guaranteea  consistent  path  to  the  rendezvous  point"
 
in the new IOS  image (I.E router 3945), when we create a loopback, the router will install L route (which is host /32 route).
beacause of the /32 route the PHANTOM RP can not work properly.
 
=====================================R1_BACKUP_RP# interface Loopback2 description RP_address ip address X.X.200.1 255.255.255.0 ip pim sparse-mode
R1_BACKUP_RP#sh ip route L       x.x.200.1/32 is directly connected, GigabitEthernet0/1===================================== 
the x.x.200.1/32 address is the ip of the master RP but beacuse of that L route
the pim can creat the shrade tree as it should.

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Cisco Switching/Routing :: How To Enable Multicast Routing On 2960s

Mar 23, 2013

I need to enable multicast routing on 2960s but the command "ip multicast-routing" isn't available on my release (12.2.(55)).
 
From which release this command is available?     

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Cisco Switching/Routing :: 6509 - Multicast Routing Preference

Nov 14, 2012

I have a problem on my catalyst 6509 on which I would like to do the following things :
 
I have some Vlans in which multicast is enabled.
In tose Vlan theres is a router which is default router for equipements.
 
I had enabled multicast routing because some Vlan needs to exchange multicast informations, but I wolud like to make difference between Multicast traffic. For example I have 5 vlans:
 
Vlan 1 and 2 need to exchange Multicast informations but the don't need multicast information from Vlan 3 and 4
Vlan 3 and 5 need to exchange Multicast informations but the don't need multicast information from Vlan 1 and 2
Vlan 5 is independant Vlan but doesn't need to have multicast information from all others vlan.
 
Last problem, equipement on differents vlan can use the same Mulkticast group address. In this case, Multicast routing is not working between Vlan 1 to Vlan 2 and Vlan 3 to Vlan 4.

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Mar 8, 2013

I am configuring multicast in a environment where I have a 4506 at each site (4 total) and a 6506 as the core. Each 4506 is connected via layer 3 to the 6506. I have a mix of 3560s, 3548s, and 2960s connected to the 4506s and the 6506 via layer 2 trunk
 
I have multiple multicast sources and hosts communicating at a time (multiple cameras sending video / multiple computers receiving video).  So this is not a scenario where there is 1 sender and many receivers.  This would be many senders (~50) and some receivers (~10)
 
Sample Diagram:
 
->3560
|
6506 --> 4506 --> 3548
|   |
|    --> 2960
|
4506 --> 2960
|
-->3548
 
I configured ip multicast-routing on each of the 4506s and on the 6506. IGMP snooping is on by default on the 3560 and 2960 switches. CGMP is on by default on the 3548 switches.
 
I set up PIM sparse-dense mode and IGMP version 3 on each of the layer 3 interfaces for the 4506s and 6506 where they connect and on each VLAN that is sending or receiving multicast. Multicast is working throughout the network, however I am looking to verify the configuration as I scale this out to more clients on the network. 
 
#1 - Is it correct to us sparse-dense mode in this configuration?
 
#2 - Do I need to configure a rendezvous points using AUTO-RP? (ip pim send-rp-announce INTERFACE scope TTL). Not sure here if I need to designate this and what to choose.  Right now I do not have this and it is working, but documentation seems to infer that I need to designate this.
 
#3 - Is there any other configuration settings I should be considering?  I hard to find real world configurations of multicast as examples or people that know multicast routing well.

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Cisco Switching/Routing :: Test Multicast Routing With 1801?

Apr 29, 2012

I would like test multicast routing with cisco1801.i create 2 Vlan. Vlan 200 (192.168.200.x) affect Fastethernet 1,  Vlan 130  (192.168.130.x) Fastethernet 5.

Version IOS is : adipservice-k9 124-9.t1

 ip multicast-routing
 
#int Vlan 130
  ip address 192.168.130.254 255.255.255.0
  Ip pim dense-mode
#int Vlan 200
  Ip address 192.168.200.254 255.255.255.0
  Ip pim dense-mode
 
I used VLC for my test.When i connect source (224.10.10.10) and recever ( Udp://@224.10.10.10:1234), that's ok!But, source is on the Vlan 200 and reicever on the Vlan 130, is not good!I test with "sparse-mode", i have same problem.

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Feb 21, 2013

I’ve been trying a few days now to implement multicast routing on my home network in order to make airplay work between subnets. Specifically between an iphone and a hifi separated by different vlans. Failed, as I have no experience in multicast routing. we have a clean configuration and simple network which consists of two SVIs

Vlan 10: 192.168.1.0 255.255.255.0
Vlan 20: 192.168.2.0 255.255.255.0
 
ios platform cisco 887

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Protocols / Routing :: Unable To Access Any Sites Except Google Sites

Jul 8, 2012

MY ISP installed one router in my lab.for internet connectivity they mail me steps :connect your Laptop directly to gi0/3 port to check internet connectivity with public ip 1.1.1.x and Gateway 1.1.1.1 with subnet mask 255.255.255.240 after connection I surprised because I am able to access only google sites like gmail,google search etc. but I am able to ping/traceroute all sites.from browser I am able to access only google sites only.In Router no firewall no such access list.

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Cisco Switching/Routing :: 2960S Multicast Routing

Jan 17, 2012

while i am configuring a port on switch .The switch reloads.After reload the show version says,System returned to ROM by bus error at PC 0x458F6C, address 0x0,show version from the effected switch is,Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(58)SE2, RELEASE SOFTWARE (fc1).

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Cisco Switching/Routing :: 7609 - Multicast Routing

Nov 14, 2011

I faced multicast routing problem - There is no multicast UDP stream toward host, although all igmp Joins/Reports/Leaves from the host are correct.
 
This is Cisco 7609 ip m route debug showing the situation: 
369144: Nov 15 15:03:07.370 MSK: IGMP(0): Received v2 Report on Vlan176  from 10.XXX.XX.184 for 239.XXX.XX.46
369145: Nov 15 15:03:07.370 MSK: IGMP(0): Received Group record for  group 239.XXX.XX.46, mode 2 from 10.XXX.XX.184 for 0 sources
[code]....

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Cisco Switching/Routing :: Multicast On Subinterface On 861?

Feb 7, 2013

I have an 861 that we are using for a test network and need to add static igmp addresses for multicast.  We are using the router as a router on a stick with subinterfaces on the WAN link.  I've looked everywhere to see how to add the static igmp addresses.
 
interface FastEthernet4
no ip address
no ip route-cache cef

[Code]....

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Cisco Switching/Routing :: NTP Multicast On 3750?

Dec 10, 2012

I have a subnet with a GPS clock on it that connects into a Cisco 3750. The 3750 has another subnet hanging off of it that connects into a firewall then to a server. I need the server to get time from the GPS clock. Any way to pass the NTP through the 3750?  The 3750 has the 3750-IPBase code running on it so the multicast support is limited. I am under regulatory restrictions that only allow traffic to flow from the higher security level (were the time server is) to lower security level (were the server is). This prevents me from having the server go to the clock for updates.

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