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Cisco Group Management Protocol (CGMP)
Cisco Group Management Protocol (CGMP) is a Cisco proprietary Layer 2 protocol used for Layer 2 efficiency at layer 2.
Basically whenever a host want to join a multicast group, it send IGMP Join message to the target group. This message goes to the multicast router.
After such records, whenever a multicast activity is done, these CAM table is used.
In the working mechanims of CGMP, switches only listens the CGMP messages coming from the router. With these messages, they manage the efficient group membership facilities.
CGMP need to be configured on both Layer 2 switches and Layer 3 Routers.
Now, let’s show this configuration with an example.
Gokhan Kosem is a Network Engineer, Instructor and the Founder of IPCisco.com with 15+ years of experience in Cisco, Nokia, Huawei, Juniper, Linux, Service Provider Networks, Routing and Switching technologies.
He has worked on the backbone networks of major service providers and network vendors including Nortel, Alcatel-Lucent (Nokia) and has extensive hands-on experience with Cisco, Huawei, Juniper and Nokia networking technologies.
He has trained thousands of networking students worldwide through IPCisco.com, Udemy, books, labs, quizzes, and educational content across multiple social media platforms.
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