• Tag : igmp


Source IP for IGMPv2 groups

Hello, I have mixed ASM / SSM environment. How can I specify source IP for groups joined via IGMPv2? For now, when an IGMPv2 join come, the L2 layer starts to receive specified group from all sources. I want to specify just one source IP for each group. Cisco has implemented ip igmp ssm-map static [acl] [source] or mapping via DNS map. Is there any similar solution in EOS?   Thanks Blažej

Multicast subscription from unknown networks

Hi all! I need some help with multicast on EOS. I have an Arista DCS-7050S-64-F with EOS version 4.18.11M The Arista is connected to the Juniper QFX via PIM and OSPF (vlan 3025). Vlan 7 is multicast vlan for our multicast receivers from L2 domain. I receive all RPs from PIM neighborhood. But I can’t see multicast if subscribe to multicast group from undirected network (any network which unknown for the Arista). And PIM-Join is not send  from the Arista to the Juniper. If I subscribe from directly connected network (vlan7) I see multicast TV. What should I do in...
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IGMP Host-proxy

Interfaces on the switch can be configured to serve as IGMP host proxies. An IGMP host proxy exchanges IGMP reports (joins/leaves) between networks whose connection does not support PIM along network boundaries. Let’s take the example shown below: The customer network connects to the sender network through the edge switch’s Ethernet 1 interface, which is configured as an IGMP host proxy. PIM is enabled within the publisher and customer networks but not on the connection between the networks.   When only “ip igmp host-proxy” is configured on the interface, IGMP reports will be sent for any (*,G) or (S,G) entry...
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“ip address virtual” support for PIM and IGMP

Description 4.22.1F introduces support for ip address virtual for PIM and IGMP in MLAG and Vxlan. On a VLAN, the same IP address can be configured using ip address virtual on both mlag devices as well as on different VTEPs. Control packets are source NATed by the kernel to a chosen IP address. The source NATing fails for PIM and IGMP. To overcome this, users can configure pim ipv4 local-interface and borrow the IP address to be used on the VLAN.  PIM and IGMP bypass the source NATing in the kernel. The interface configuration pim ipv4 local-interface allows PIM and...
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Wireless Network Optimization – Multicast Control Using Internet Group Membership Protocol (IGMP)

Introduction Multicast is often used to stream video. Multicast packets need to flood the network to reach the recipients, which means that these packets are forwarded to many network segments even though there may not be any clients on the segment that are interested in the video stream. A protocol was developed to cull this unwanted data, called Internet Group Membership Protocol (IGMP). IGMP provides a way for a client to inform another Layer 2 device that it wants to receive a multicast stream. It does this by sending an IGMP Report with the multicast address of the session it...
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