Cisco Ultra-Reliable Wireless Backhaul Standalone, Software Configuration Guide, Release 26.1.x

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Configure multicast using CLI

Updated: April 10, 2026

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Configure multicast groups using CLI commands to add destination IP addresses for upstream and downstream traffic flow.

This task allows you to configure multicast groups to manage traffic flow in mesh networks, enabling proper data routing to mesh end devices and global gateways.

In Layer 3 mode, multicast rules must be configured on all mesh end devices and the global gateway. Different multicast IP addresses are used for upstream and downstream traffic to ensure proper data flow direction and failover capabilities.

Procedure

Use the configure multicast group add multicast-IP-address netmask destination-IP-address command to add the destination IP address.

Example:

Device# configure multicast group add 224.5.5.5 255.255.255.255 5.255.255.255
Note

This configuration takes effect only after the reboot.

Use these different multicast IP addresses for upstream and downstream traffic:

  • 224.5.5.5/5.0.0.0: sends the data to the current primary mesh end device. This is especially useful when the mesh end's fast failover is enabled. This address applies only to the upstream data flow.

  • 224.5.5.6/5.255.255.255: sends the data to all mesh point devices over the mesh network. This address applies only to the downstream data flow..