[SOLVED] multicast/UDP Flood

Taser

New Member
Oct 18, 2019
7
1
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Hey,
I'm getting a lot of multicast requests from proxmox,
I'm currently running 15 nodes from which 13 are online ( 2 at other location with no network )

screenshot from Wireshark:

1571392479823.png


is there any way I can lower these requests?
 

Chris

Proxmox Staff Member
Staff member
Jan 2, 2019
591
55
28
Hey,
I'm getting a lot of multicast requests from proxmox,
I'm currently running 15 nodes from which 13 are online ( 2 at other location with no network )

screenshot from Wireshark:

View attachment 12377


is there any way I can lower these requests?
HI,
these packets are coming from corosync and are essential for it to work as intended!
 

Chris

Proxmox Staff Member
Staff member
Jan 2, 2019
591
55
28
but so many ?
its flooding quite alot.
getting 20 ish packets a second
This is nothing unusual, especially if you have many nodes. Do you experience any issues?
 

Taser

New Member
Oct 18, 2019
7
1
3
19
This is nothing unusual, especially if you have many nodes. Do you experience any issues?
WIth the nodes/proxmox itself not,
but my whole network gets alot of packets.
also thanks for taking your time replying to me.
 

Chris

Proxmox Staff Member
Staff member
Jan 2, 2019
591
55
28

Chris

Proxmox Staff Member
Staff member
Jan 2, 2019
591
55
28
no i have not done this yet.
should it be just its own subnet or ?
is there a way to "delay" the syncs ?
No, it should be on a physically separate network as corosync requires low latency to work. Delaying the syncs is not what you want.
 

Taser

New Member
Oct 18, 2019
7
1
3
19
No, it should be on a physically separate network as corosync requires low latency to work. Delaying the syncs is not what you want.
struggle of life my man.... hah
also is vlans an option ?
is there any way to make it "peer to peer" instead of multicast ?
 
Last edited:

spirit

Famous Member
Apr 2, 2010
3,827
196
83
www.odiso.com
>>but my whole network gets alot of packets.

enable igmp snooping and igmp querier on your physical switch to filter multicast.

Another way is to use a dedicated vlan for proxmox corosync
 

Taser

New Member
Oct 18, 2019
7
1
3
19
>>but my whole network gets alot of packets.

enable igmp snooping and igmp querier on your physical switch to filter multicast.

Another way is to use a dedicated vlan for proxmox corosync
will setup vlans tomorrow.
thanks.
 

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