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.
We are trying to test multicast between VRFs configured on Nexus 7Ks. Two Nexus 7Ks are configured for VPC. Multicast Server is in one VRF where as Receiver is in another VRF. The two VRFs are connected to each other via Checkpoint Firewall (Active/Active cluster in unicast mode). All routes have been established and connectivity tested between multicast server and receiver using ICMP.Using, windows mcast.exe multicast stream is generated from server (in one VRF) intended to be received by receiver (in second VRF). Every time, only one multicast packet is received by the receiver and rest all packets are being dropped. Server and Receiver are VirtualMachines configured on VMWaresame chassis which is connected to two Nexus 5Ks (VPC configured).
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.
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.
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.
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.
I have a 3560X switch with interfaces 36-48 on the same LAN. All interfaces are switchports. Hosts on 38, 39 and 40 are multicast senders: all sending to the same single multicast address. Hosts on 36 and 37 are receivers, having joined that multicast group. I created an SVI for the LAN and put it in ip pim passive. (That is the only PIM mode allowed for an SVI with my IOS.) Show ip igmp snooping groups shows that 36 and 37 are the only interfaces in this group. I attach a laptop to interface 42 and Wireshark, and the laptop is receiving the multicast traffic. The laptop does not join the group. I expect it would not see the traffic.
I am trying to resolve a situation where we need to send multiple (2 atleast) multicast feeds from a source to our multilayer switch (3560x).
The problem with the source is that it can only send a feed to a single switch at a given time. It can not send 2 (identical) feeds to two 3560x devices (on 2 different subnets/vlans). I was wondering if i could make the two 3560x devices appear as 1 device (using virtual chassis system or a similar feature). I am running ip services IOS feature set (c3560e-universalk9-mz.122-58.SE2.bin).
I have configured multicast(ip pim dense-mode) on two 2911 that are connected by a Multilink( 3 Mbps) Wan connection.The configuration works fine for awhile and sometimes all day but at some point one of the Multilink interfaces stops passing multicast traffic.I perform a SH Multilink 1 on the interfaces and one show multicast packets incrementing and one does not, it just stops.The problem acts like there is a buffer that gets full and after that happens it just stops working.
I am having trouble getting some multicast traffic across a link. I have a 3750G setup, with IP routing and IP multicast routing, between two laptops. This will eventually sit between two networks that cannot be physically connected to each other for security reasons. I have static joins on the ports but cannot see the multicast traffic on the receiver. I am attaching the latest config. The sender(10.10.4.2) sits on gi1/0/24 and the receiver(10.10.3.2) sits on gi1/0/1. I am using VLC to test this and it will connect if I point the receiver to the address of the sender, but will not receive any multicast. The multicast traffic is not making it to the 10.10.3 side, I used wire shark to verify that it was not making it across.
Multicasting. The configuration is I have a 6506 as my core switch receiving multicasts from an interface assigned to VLAN10. I have a monitor port setup with a PC running Observer which says multicasts are being received on the core switch. On a different interface on the core switch I have a 2960G switch connected to it and this interface is on VLAN 10. The 2960G switch has a workstation connected to it that needs to receive the multicasts. How do I configure the 6506 and/or the 2960G to process the multicast traffic?
I have two Catalyst 6506 in VSS mode with VS-S720-10G running 12.2(33)SXI1 IP SERVICES.I have two firewalls that communicate on to the other through a dedicated VLAN created on Catalyst 6506.
One firewall is able to ping the other one on this dedicated VLAN but if I send multicast traffic from firewall-1 I didn't receive it on firewall-2.I found a bug related to multicast issues on Cisco WS-C6509-E with VS-S720-10G. The bug ID is CSCtc59038.
I have a new VOIP implementation using 2960 switches. I want to prioritize voice traffic. After creating VLAN 2 I did the following:
Per Cisco, I did the following on my up-link ports:
switch port trunk allowed vlan 1,2 switch port mode trunk switch port nonegotiate priority-queue out mls qos trust cos switchport trunk allowed vlan 1,2 switchport mode trunk switchport nonegotiate priority-queue out mls qos trust cos spanning-tree port fast trunk spanning-tree bpduguard enable
On my ports where a VOIP phone was plugged in, I did the following:
switch port trunk allowed v lan 1,2switchport mode trunk switch port no negotiate priority-queue outmls qos trust cos spanning-tree port fast trunk spanning-tree bpduguard enable
How can I verify that my voice traffic is being prioritized?
I have 2 hosts, 1 plugged in fa 0/21 in VLAN 101 and another in fa 0/22 in VLAN 101 on our L2 Cisco 2960. If I try and transfer files from either host the gig 0/1 trunk port on the 2960 leading tot he 3750 fa 0/1 port hits 100mb (using a real time bandwidth monitor tool), but why? This VLAN is on the same switch, why does it go one way up the trunk to the L3 3750 switch? The L3 3750 is the VTP server and the 2960 is a client. I would of thought the traffic stays local. The 2 hosts don't even have a gateway set.To sum up the typology the 2960 and 3750 are trunked using a single cable. The 3750 hangs of a ASA firewall using SVIs.Here is whatthe traffic looks like when copying a file between hosts (2gb file).
I am trying to setup a network using Cisco 2960 switches with vlans configured. One vlan will handle video coming from four cameras that are connected to another 2960.
We have four cameras feeeding one port each on a 2960, that 2960 in turn feeds one port on the main 2960 which is the video vlan for that site. From the site it goes back to a Cisco 3750 to be sent over to a Sonicwall firewall. If we connect to the 2960 that the camera are connected to we can see the video, but not on the main site 2960.
For my Lan, I have created two Vlan; Vlan 10 = for Users and Vlan 20 = For Database Servers,There are 15 Lan computer/laptop and 5 SQL database server (Dell Server) connected through same 24 port cisco 2960 switch. Means, 15 + 5 port occupied.
I have applied access list on cisco switch to restrict communication between vlan 10 and vlan 20.But My main purpose to create two Vlan is not for any kind of communication or restriction. My main Purpose is that Users traffic do not distrub or choke or affect the Database servers. then what will i need to do for that is VLAN Concept is sufficient for my concern OR I will need to buy seperate Cisco Switch to connect 5 database servers OR Else ?
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.
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.
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.
The last few days I've been exploring options in getting rid of some old routers accross a wan connections. I have a cat 3560 to play with and I thought I would try and use the no switchport command test out routing with switch. I've got some type of route issue and I tried a few things which I thought would fix the issue but had no effect. I'll post the config and a few commands so you can see what the basic setup is.
Here we can see in the arp that it knows about both 10.7.1.2 (PC unable to ping 10.3.3.254) as well as 10.3.3.254 (ASA).I tried adding in a ip route of 10.7.0.0 255.255.0.0 10.3.3.110 as well as 10.3.3.254. Neither produced the results I wanted allowing 10.7.1.2 (PC) to ping the ASA (10.3.3.254). [code]
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]
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 have configured an Cisco 881 router in our lab with netflow commands and pointed to our network monitoring tool and I want to check if the tool can collect valid traffic statistics from this router (eg. utilization). The problem this router has nothing plugged into a production LAN that would potentially generate traffic to measure using this tool.
Is there a way to configure a Cisco router (ex. Cisco 881 router) to artificially generate network traffic to test that I have setup the monitoring tool correct to capture future utilization statistics?
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:
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:
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.
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 ?
Recently i atsrt having problems with my cisco router 1811/k9, apparently was booting continiosly when restarted.
After i connected my console i found the problem while booting:
DDR memory test failed. Resetting the router ...
I tried to contact cisco TAC, but i need a reseller contract number to place a ticket, i do not have a resller contract number as my router was bought more than two years ago. I called cisco support and they told me to contact my reseller, my reseller told me to contact cisco so i am in a eternal loop of forwarding phone calls...
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.
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)
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.
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
