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Hello Stoiko, thank you for the reply! '- what path do the packets take? (`ip route get 10.1.3.14` run on the same prompt should tell you)' : from a pve node # ip route get 10.1.3.14 10.1.3.14 via 10.1.10.1 dev vmbr0 src 10.1.10.3 uid 0 from a desktop # ip route get 10.1.3.14 10.1.3.14 via...

using -I on traceroute works : # traceroute -I mail traceroute to mail (10.1.3.14), 30 hops max, 60 byte packets 1 mail.fantinibakery.com (10.1.3.14) 0.315 ms * *

so we just use vmbr0 and tak vms like this: net0: virtio=F6:BC:CB:79:8D:3E,bridge=vmbr0,tag=3

we have a vlan that has connection issues a couple of times per week. vlan 3 has most of our server vm's like ldap, dhcp, nextcloud and 20 others. we can run traceroute to all vlans addresses except vlan 3 . examples next: # vlan 3 # traceroute mail traceroute to mail (10.1.3.14), 30 hops...

regarding routing, at the mlag link there is a mention of 'vfr' also I've seen mention of FFR in forums here and other places. could someone suggest a safe/best direction to start off with for routing?

this seems to document all that is needed from bond, bridge to mlag . https://docs.cumulusnetworks.com/cumulus-linux-42/Layer-2/Multi-Chassis-Link-Aggregation-MLAG/ cumulus is not inexpensive [ yet] , however I know we've made the right choice in our circumstance. at age 65 i think this...

yes mlag will be done when 2ND switch gets here in a couple of weeks. so our 1ST tests will bond to switch ports on the same switch.

I thought so. so 8 bonds , one per pve node. then use those bonds at the bridge. ### Cumulus /etc/network/interfaces .. auto bridge iface bridge bridge-ports bond1 bond2 bond3 bond4 bond5 bond6 bond7 bond8 bridge-vids 130-132 bridge-pvid 1 bridge-vlan-aware yes ..

i agree bond will be needed . thanks for the link..... so i am trying to work this out: will one bond be needed for each pve node at cumulus? or can one bond be made at cumulus including 8 ports on each switch?

Hello, we have a pair of Mellanox model sn2700 on order with Cumulus linux on order. We'll be replacing a a stack of netgear m5300 . In advance I am researching how to configure pve + the switches. we have a 7 node cluster . each node is: - running 4 ceph nvme osd's , 5-6 vm's and...

yes it is possible, and very easy now with latest pve. when adding osd, click Advanced and assign Device Class from pull down menu or type in a name.

you've got to learn how to set these up on your dell switch: vlan T vlan U and pvid. make sure you have an understanding of those 3 pieces of data. try learning those by checking some youtube vlan videos like https://www.youtube.com/watch?v=plrGKoMCJdM vlan U on switch: -...

perhaps you could post the part of the configuration file for the ports from the netgear config ? my guess is that not all the vlans are not being allowed into the ports.

all works well after the changes, these helped verify: journalctl -b -u corosync corosync-cfgtool -s pvecm nodes pvecm status

OK thanks for the help. I also changed rrp_mode to link_mode in my post above..

OK i am also reading https://people.redhat.com/ccaulfie/docs/KnetCorosync.pdf . "Under the old corosync this was called ringnumber but I've renamed it linknumber to be more consistent with knet" so if you do not mind check my proposed change old: totem { cluster_name: 20170226...

can I verify this: udp used to be used , so lines' like bindnetaddr: 10.10.0.10' now be deleted now that knet is used ?

we have had zero backup issues since stable.

that makes sense , thank you.

so there is no way to answer my question with out having a lot more info on our set up. currently our public / vm network has 1G , ceph cluster 10G . so we'll use the 10G for pbs and do backups after office hours. later we'll have a 10G public / vm network and a 40G ceph cluster . we'd...