# Multicast **URL:** https://forum.networklessons.com/c/routing-switching/multicast/9.md [Latest](https://forum.networklessons.com/latest.md) · [Categories](https://forum.networklessons.com/categories.md) --- ## [About the Multicast category](https://forum.networklessons.com/t/about-the-multicast-category/15)
**Author:** [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)\ **Replies:** 0\ **Last updated:** [December 13, 2016, 12:33pm UTC](https://forum.networklessons.com/t/about-the-multicast-category/15 "2016-12-13T12:33:21Z")
Sending traffic from one source to a group of receivers is what multicast is all about. Any questions? We can discuss them here. --- ## [Multicast RPF Select on Cisco 3850](https://forum.networklessons.com/t/multicast-rpf-select-on-cisco-3850/58774)
**Author:** [@don.p.maker](https://forum.networklessons.com/u/don.p.maker)\ **Replies:** 5\ **Last updated:** [January 20, 2026, 7:01pm UTC](https://forum.networklessons.com/t/multicast-rpf-select-on-cisco-3850/58774 "2026-01-20T19:01:44Z")
I’m having a very strange issue with a 3850 right now. We use 3850’s as building routers on campus. Each building gets its own 3850 and then there is a variety of 4500, 2960X and 9300 switches deployed for layer 2. On e… --- ## [Inter-VRF multicast routing](https://forum.networklessons.com/t/inter-vrf-multicast-routing/48436)
**Author:** [@Taoufik.irisi](https://forum.networklessons.com/u/Taoufik.irisi)\ **Replies:** 3\ **Last updated:** [June 15, 2024, 5:58am UTC](https://forum.networklessons.com/t/inter-vrf-multicast-routing/48436 "2024-06-15T05:58:38Z")
Hi Team, This is my first time posting a question in this forum and helpfully you can help me out. Here is my design. Core switch: 2x 9500 configured as Stackwise virtual Firewall: 2xASA (Active/standby) In the Core s… --- ## [Is there a video course for mutlicast?](https://forum.networklessons.com/t/is-there-a-video-course-for-mutlicast/43406)
**Author:** [@jcrsantiago](https://forum.networklessons.com/u/jcrsantiago)\ **Replies:** 1\ **Last updated:** [February 22, 2024, 8:00am UTC](https://forum.networklessons.com/t/is-there-a-video-course-for-mutlicast/43406 "2024-02-22T08:00:33Z")
I noticed that the multicast course is mainly text and screenshots. Is there a version that is a video course? --- ## [Load balancing](https://forum.networklessons.com/t/load-balancing/43230)
**Author:** [@videorocket](https://forum.networklessons.com/u/videorocket)\ **Replies:** 3\ **Last updated:** [February 19, 2024, 8:08am UTC](https://forum.networklessons.com/t/load-balancing/43230 "2024-02-19T08:08:53Z")
Hi, I have multiple eg.4 100G L3 links between two routers how exactly will it load balance for example 160 Gb/s multicast traffic? --- ## [Multicast over SVI Nightmare](https://forum.networklessons.com/t/multicast-over-svi-nightmare/31906)
**Author:** [@adellavecchia](https://forum.networklessons.com/u/adellavecchia)\ **Replies:** 4\ **Last updated:** [November 17, 2022, 11:59pm UTC](https://forum.networklessons.com/t/multicast-over-svi-nightmare/31906 "2022-11-17T23:59:58Z")
I have two switches each with 2 SVI’s. Firmware: ess3x00-universalk9.17.09.01.SPA.Cupirtino Hardware: Cisco Catalyst IE3x00 Rugged Series Switches Switch 1 Config: interface Loopback0 ip address 1.0.0.1 255.255.255… --- ## [Join-group over static-oif](https://forum.networklessons.com/t/join-group-over-static-oif/26564)
**Author:** [@gurowar](https://forum.networklessons.com/u/gurowar)\ **Replies:** 2\ **Last updated:** [September 20, 2022, 5:46pm UTC](https://forum.networklessons.com/t/join-group-over-static-oif/26564 "2022-09-20T17:46:46Z")
Good day I’m not understanding the difference between the command: ip igmp static-oif and ip igmp join-group isn’t these commands similar? the first command binds a group to the OIF whil the 2nd command binds interf… --- ## [Command reference ip mroute](https://forum.networklessons.com/t/command-reference-ip-mroute/25415)
**Author:** [@gurowar](https://forum.networklessons.com/u/gurowar)\ **Replies:** 4\ **Last updated:** [May 3, 2022, 8:38pm UTC](https://forum.networklessons.com/t/command-reference-ip-mroute/25415 "2022-05-03T20:38:30Z")
Good day Hope all is well…have a quick question, I have 3 Xconn into an exchange what I am trying to accomplish is I want to evenly distribute the traffic across all 3 Xconns and I was thinking I would be able to utiliz… --- ## [Multiple RPs using same ACL](https://forum.networklessons.com/t/multiple-rps-using-same-acl/25217)
**Author:** [@gurowar](https://forum.networklessons.com/u/gurowar)\ **Replies:** 2\ **Last updated:** [March 24, 2022, 8:51pm UTC](https://forum.networklessons.com/t/multiple-rps-using-same-acl/25217 "2022-03-24T20:51:31Z")
Good day all Hope you all are doing well…have a quick question I am working with an exchange and currently we do static flooding and we will be moving away from that. Currently I have an 3 ACLs on my edge switch that … --- ## [Query in class D range](https://forum.networklessons.com/t/query-in-class-d-range/16242)
**Author:** [@shriyak529](https://forum.networklessons.com/u/shriyak529)\ **Replies:** 1\ **Last updated:** [January 25, 2022, 7:52am UTC](https://forum.networklessons.com/t/query-in-class-d-range/16242 "2022-01-25T07:52:57Z")
When we say 224.0.0.0 through 239.255.255.255 range in class D reserved address for multicast do we mean 224.0.0.0/24 and 239.0.0.0/8 ? --- ## [Inter-vlan Multicast Routing](https://forum.networklessons.com/t/inter-vlan-multicast-routing/15917)
**Author:** [@rspela830](https://forum.networklessons.com/u/rspela830)\ **Replies:** 1\ **Last updated:** [December 10, 2021, 9:53am UTC](https://forum.networklessons.com/t/inter-vlan-multicast-routing/15917 "2021-12-10T09:53:04Z")
Good Day, I have an interesting issue that I inherited via a consultant who was not well versed on the system he was working on. I have to route multicast traffic to different vlans from the source vlan. The source of … --- ## [Multicast from Gi to Fa port on Cisco IR1101-K9 router](https://forum.networklessons.com/t/multicast-from-gi-to-fa-port-on-cisco-ir1101-k9-router/15221)
**Author:** [@dhs.deal](https://forum.networklessons.com/u/dhs.deal)\ **Replies:** 1\ **Last updated:** [August 27, 2021, 6:27am UTC](https://forum.networklessons.com/t/multicast-from-gi-to-fa-port-on-cisco-ir1101-k9-router/15221 "2021-08-27T06:27:34Z")
Hello. We are struggling a bit with what may be a simple problem. We have been at it some time without luck (I am new and got assigned this task), so maybe you can take a crack at it? :slight\_smile: We have a Cisco IR… --- ## [Trouble shooting Multicast issue with camera](https://forum.networklessons.com/t/trouble-shooting-multicast-issue-with-camera/14118)
**Author:** [@ncc99999](https://forum.networklessons.com/u/ncc99999)\ **Replies:** 1\ **Last updated:** [April 17, 2021, 8:26am UTC](https://forum.networklessons.com/t/trouble-shooting-multicast-issue-with-camera/14118 "2021-04-17T08:26:47Z")
Hi Guys, IS there any guidance for multicast trouble shooting issue on the site? I have an issue with camera which giving me pixelation/lagging video while other plugged in the same don’t have issue. Thanks. --- ## [HSRP-Aware PIM](https://forum.networklessons.com/t/hsrp-aware-pim/14025)
**Author:** [@sten.joseph.olsson](https://forum.networklessons.com/u/sten.joseph.olsson)\ **Replies:** 1\ **Last updated:** [April 6, 2021, 6:58am UTC](https://forum.networklessons.com/t/hsrp-aware-pim/14025 "2021-04-06T06:58:05Z")
Hi there, I ran into an issue recently where I had 4 routers (2 pairs of 2 HSRP-groups) on the same VLAN which contained my multicast receiver. I get some multicast data from each set of routers coming into that VLAN. … --- ## [Multicast at Layer2 - when to enable pim on SVI](https://forum.networklessons.com/t/multicast-at-layer2-when-to-enable-pim-on-svi/13869)
**Author:** [@jamesobradley](https://forum.networklessons.com/u/jamesobradley)\ **Replies:** 2\ **Last updated:** [March 17, 2021, 9:34am UTC](https://forum.networklessons.com/t/multicast-at-layer2-when-to-enable-pim-on-svi/13869 "2021-03-17T09:34:54Z")
I’m missing a link when it comes to multicast at layer 2. The goal is to connect a receiver to a server. The receiver is connected to a port on a layer 2 switch using VLAN 100 and the switch connects to another switch … --- ## [Multicast and eigrp](https://forum.networklessons.com/t/multicast-and-eigrp/12842)
**Author:** [@arlet3.veronese](https://forum.networklessons.com/u/arlet3.veronese)\ **Replies:** 3\ **Last updated:** [December 6, 2020, 12:37pm UTC](https://forum.networklessons.com/t/multicast-and-eigrp/12842 "2020-12-06T12:37:06Z")
Hi In the lab Multicast advanced, with eigrp i need to send the multicast address 224.0.0.10 but with sparse mode, this address can’t pass. One solution is spend to the sparse-dense mode. But is there a solution with sp… --- ## [Which IP group do I create?](https://forum.networklessons.com/t/which-ip-group-do-i-create/12473)
**Author:** [@spellman\_p](https://forum.networklessons.com/u/spellman_p)\ **Replies:** 1\ **Last updated:** [October 8, 2020, 10:04am UTC](https://forum.networklessons.com/t/which-ip-group-do-i-create/12473 "2020-10-08T10:04:10Z")
I have a question about the Multicast group creation and assignment. How do I know what group to make? I am trying to clean up a botched Multicast issue configuration and I am still pretty new to multicasting and your ma… --- ## [Multicast over MPLS L3 VPN network](https://forum.networklessons.com/t/multicast-over-mpls-l3-vpn-network/6948)
**Author:** [@rudycharlot](https://forum.networklessons.com/u/rudycharlot)\ **Replies:** 1\ **Last updated:** [May 15, 2019, 9:18am UTC](https://forum.networklessons.com/t/multicast-over-mpls-l3-vpn-network/6948 "2019-05-15T09:18:28Z")
Hello Rene, Can you please add a complete tutorial on how to implement multicast over a MPLS L3 VPN core network. --- ## [Cisco Multicast Service Reflection](https://forum.networklessons.com/t/cisco-multicast-service-reflection/11745)
**Author:** [@michael.payne](https://forum.networklessons.com/u/michael.payne)\ **Replies:** 1\ **Last updated:** [July 13, 2020, 8:22am UTC](https://forum.networklessons.com/t/cisco-multicast-service-reflection/11745 "2020-07-13T08:22:43Z")
Can you provide a topic explaining Cisco’s Multicast Service Reflection for changing an inbound Multicast address to a Unicast address and changing an inbound Multicast address to a different Multicast address? Cisco ha… --- ## [Nexus 3K 100% cpu usage when enable PIM sparse mode on interface vlan](https://forum.networklessons.com/t/nexus-3k-100-cpu-usage-when-enable-pim-sparse-mode-on-interface-vlan/11478)
**Author:** [@scramatte](https://forum.networklessons.com/u/scramatte)\ **Replies:** 1\ **Last updated:** [June 10, 2020, 2:20pm UTC](https://forum.networklessons.com/t/nexus-3k-100-cpu-usage-when-enable-pim-sparse-mode-on-interface-vlan/11478 "2020-06-10T14:20:27Z")
Hi, I’ve got an N3k with VLAN that move around 500Mbit of Multicast TV data. When I enable “pim sparse-mode” on this interface vlan, CPU of Nexus goes to 100% and ssh/telnet stop working but I’m still able to access s… --- ## [Need help setup Multicast PIM BSR](https://forum.networklessons.com/t/need-help-setup-multicast-pim-bsr/11326)
**Author:** [@scramatte](https://forum.networklessons.com/u/scramatte)\ **Replies:** 2\ **Last updated:** [June 8, 2020, 6:35pm UTC](https://forum.networklessons.com/t/need-help-setup-multicast-pim-bsr/11326 "2020-06-08T18:35:49Z")
Hello, I’m trying to setup Multicast routing with PIM and BSR for RP discovery. I’ve followed example in the Multicast course but my environment is little bite different and I’m unable to get it working. With manual… --- ## [What multicast feature should I use?](https://forum.networklessons.com/t/what-multicast-feature-should-i-use/11199)
**Author:** [@neoassad59](https://forum.networklessons.com/u/neoassad59)\ **Replies:** 1\ **Last updated:** [May 19, 2020, 5:09am UTC](https://forum.networklessons.com/t/what-multicast-feature-should-i-use/11199 "2020-05-19T05:09:00Z")
Hi everyone, I’m actually experiencing some difficulties to move multicast traffic… Here is my problem : I actually have multicast traffic going from the customer network to my receiver using Router 1 & 3. The equipme… --- ## [Multicast Per VLAN](https://forum.networklessons.com/t/multicast-per-vlan/8128)
**Author:** [@msroshid1](https://forum.networklessons.com/u/msroshid1)\ **Replies:** 3\ **Last updated:** [October 18, 2019, 5:32pm UTC](https://forum.networklessons.com/t/multicast-per-vlan/8128 "2019-10-18T17:32:15Z")
I have a network like below. My L3 distribution switch routing all access switch Vlans 518 and 718. My L3 and Core switch is connected with Access 4094. I have several video cameras in each L2 switch. My Host is connecte… --- ## [BIDIR Phantom RP](https://forum.networklessons.com/t/bidir-phantom-rp/8378)
**Author:** [@michael7943](https://forum.networklessons.com/u/michael7943)\ **Replies:** 1\ **Last updated:** [October 2, 2019, 5:48am UTC](https://forum.networklessons.com/t/bidir-phantom-rp/8378 "2019-10-02T05:48:24Z")
Can you explain BIDIR Phantom RP in your easy to understand approach :slight\_smile: --- ## [PIM-DM Route Expiry time](https://forum.networklessons.com/t/pim-dm-route-expiry-time/7322)
**Author:** [@maniam](https://forum.networklessons.com/u/maniam)\ **Replies:** 3\ **Last updated:** [June 6, 2019, 11:00am UTC](https://forum.networklessons.com/t/pim-dm-route-expiry-time/7322 "2019-06-06T11:00:19Z")
Hi, Imagine an internetwork that supports PIM-DM multicasting. The ‘show ip mroute’ shows the multicast routing table entries for a router. Each (S,G) entry has an associative Uptime/Expires. The default value for Expir… --- ## [IGMPv3 Joining w/o replying to query](https://forum.networklessons.com/t/igmpv3-joining-w-o-replying-to-query/7006)
**Author:** [@simmerl.baar](https://forum.networklessons.com/u/simmerl.baar)\ **Replies:** 1\ **Last updated:** [May 16, 2019, 9:04am UTC](https://forum.networklessons.com/t/igmpv3-joining-w-o-replying-to-query/7006 "2019-05-16T09:04:51Z")
Hi all, in my configuration is a switch with is acting as MC Querier (IGMP snooping enabled too). Attached is a Ethernet recorder, which is by default a passive listener to the network traffic. As we want also the MC tr… --- ## [Multicast And igmp Version 3](https://forum.networklessons.com/t/multicast-and-igmp-version-3/6796)
**Author:** [@Itzikh](https://forum.networklessons.com/u/Itzikh)\ **Replies:** 0\ **Last updated:** [April 12, 2019, 6:15pm UTC](https://forum.networklessons.com/t/multicast-and-igmp-version-3/6796 "2019-04-12T18:15:24Z")
Hello, What’s happened if in my environment I have same IP soruce and same destination address but the port destination is deferent. Example 10.1.1.1 224.1.2.3 5420 10.1.1.1 224.1.2.3 5320 If my client sent igmp joi… --- ## [IP multicast routing - How to override source IP of multicast on a router's outgoing port](https://forum.networklessons.com/t/ip-multicast-routing-how-to-override-source-ip-of-multicast-on-a-routers-outgoing-port/5019)
**Author:** [@vaclav.mraz](https://forum.networklessons.com/u/vaclav.mraz)\ **Replies:** 3\ **Last updated:** [April 10, 2019, 5:47am UTC](https://forum.networklessons.com/t/ip-multicast-routing-how-to-override-source-ip-of-multicast-on-a-routers-outgoing-port/5019 "2019-04-10T05:47:09Z")
Hello, I would like to ask you if there is any option how to override the source IP address of sender for multicast stream on a router. --- ## [Multicast without router](https://forum.networklessons.com/t/multicast-without-router/6557)
**Author:** [@simmerl.baar](https://forum.networklessons.com/u/simmerl.baar)\ **Replies:** 0\ **Last updated:** [March 18, 2019, 9:14pm UTC](https://forum.networklessons.com/t/multicast-without-router/6557 "2019-03-18T21:14:35Z")
Hi, I have a question using Multicast without a Router. The topology with the ip addresses is attached. Some questions: Is this Setup Working? (due to different Subnet) I assume Yes , because of IGMP snooping, SW2 an… --- ## [GRE Tunnel-less](https://forum.networklessons.com/t/gre-tunnel-less/6119)
**Author:** [@whijoon](https://forum.networklessons.com/u/whijoon)\ **Replies:** 1\ **Last updated:** [February 4, 2019, 9:15am UTC](https://forum.networklessons.com/t/gre-tunnel-less/6119 "2019-02-04T09:15:01Z")
Could explain about GRE Tunnel-less feature? What is the difference with GRE Tunneling feature? Thanks, Whijoon, [Next page](https://forum.networklessons.com/c/routing-switching/multicast/9.md?page=1)