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11682011er
11682011er
New Member
April 4, 2023
Question

Multicast in VLAN across multiple Fortiswitches

  • April 4, 2023
  • 2 replies
  • 2346 views

Hello,

 

we have set up a VLAN for "spectralink dect base-stations" here.
The base stations are connected to several Fortis switches.
Here there seems to be a problem with multicast, the devices can not sync across multiple switches. (on the same switch it works).

 

What must be set up in the Fortigate so that the multicast works across switches?

 

The manufacturer gives the following information:
https://support.spectralink.com/sites/default/files/resource_files/Synchronization%20and%20Deployment%20Guide.pdf


There are two possible solutions to this:
l Give the highest priority to a custom IP priority and configure the server to apply this IP priority
to PTPv2 traffic.
l Give the highest priority to multicast UDP packets on port 319 with the destination address
224.0.1.129 (IPv4) or FF02::181 (IPv6).

Thanks for help!

 

2 replies

gfleming
Staff
gfleming
Staff
April 6, 2023

What model FortiSwitch and FortiGate? What OS versions?

 

This might be a good start to read over? https://docs.fortinet.com/document/fortiswitch/7.2.4/fortilink-guide/173274/configuring-igmp-snooping-settings

11682011er
11682011erAuthor
New Member
April 6, 2023

Thanks for reply,

 

Foritgate 500e with v7.0.9 b0444 and several FortiSwitch 448D with v6.2.4.

(managed over 500e)

 

In this case?

config system interface
 edit vlan100
  set switch-controller-igmp-snooping enable
  set switch-controller-igmp-snooping-proxy enable
 next
end
  • Is the setting for the VLAN alone sufficient, or must a global setting also be made?
  • Does a proxy need to be set?

 

 

gfleming
Staff
gfleming
Staff
April 6, 2023

I'm pretty sure you need to follow all of those configuration options as outlined in the IGMP doc. Please try at least. And then check if you see your groups showing up under:

 

diagnose switch-controller switch-info igmp-snooping group <SWITCH_ID>

 

diagnose switch-controller switch-info igmp-snooping status <SWITCH_ID>

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