
[GRE](/gre) tunnels support [multicast](/multicast) traffic.

[GRE tunnels and how they transmit multicast packets](/gre-tunnels-and-how-they-transmit-multicast-packets)

Links:

https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/43584-mcast-over-gre.html

https://forum.networklessons.com/t/gre-tunnel-key/10667/6?u=lagapides

GRE tunnel and multicast

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FlexVPN spoke to spoke communication fails with IPSec tunnel

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Frame Relay - is it a relevant technology anymore

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Frame-Relay DLCI values

GNS3 how to obtain Cisco IOS images

GRE - Recursive routing error - AD solution

GRE - Recursive routing error - filtering solution

GRE - Recursive routing error

GRE - Tunnel Addressing

GRE MTU settings

GRE and IPSec

GRE tunnel key operation with only one tunnel key configured

GRE tunnel key

GRE tunnels and how they transmit multicast packets

Gateway Load Balancing Protocol (GLBP)

HSRP - Deployment in Distribution Layer

HSRP - standby group numbers

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Hot Standby Router Protocol (HSRP)

How to learn Python for networking

How to practice labbing - best practices

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ICMP - response to a ping that is blocked by an ACL

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ICMP

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IGMP Snooping internal interface

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IGMP membership reports destination

IGMP report suppression

IGMP snooping inspects PIM hello packets

IGMP snooping prevents report suppression

IGMP snooping source IP address for messages

IGMP snooping

IGMP version 1 how hosts stop receiving multicast traffic

IGMP

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IGRP

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