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While making a call from the client to the server, the user could not hear audio. There is already a configured VLAN to VLAN multicast policy, but for some reason, it is not working.
As per this scenario, there is alreadya configured multi-cast policy. Make these changes in the firewall and check.
To prevent the TTL for forwarded packets from being changed:
config system setting
set multicast-ttl-notchange enable
end
To enable multicast forwarding in NAT mode:
config system setting
set multicast-forward enable
end
For testing purposes, disable the offloading policy traffic for hardware acceleration if the issue is still present.
config firewall multicast-policy
edit <policy id>
set auto-asic-offload disable
end
Related document:
Configuring multicast forwarding
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