Hello.
Looks like your switch is flooding known unicast traffic.
Check if mac of 10.0.2.7 exists in FDB on all switches, also
mac-learning is enabled on this port or vlan, and check overall MAC
count on switch.
Also there is a chance of hash collision, which leads to things thet
some mac addresses cant be learned on switch FDB.
03.11.2017 11:20, Daniel пишет:
Hi there,
i have some strange issues. I have a couple of Proxmox Server in a Cluster.
First of all I see on all Servers the same Traffic. This confused me and I
started to debug where it come from.
First point was tcpdump and here is something strange. I see on server7 all
traffic which is going to the NFS Server from server18
Normally in a switched network this is not possible for my understanding.
10:09:29.686286 IP 10.0.2.128.782 > 10.0.2.7.2049: Flags [.], seq
22820576:22848088, ack 67363421, win 24575, options [nop,nop,TS val 552550304 ecr
1340486158], length 27512
10:09:29.686519 IP 10.0.2.128.782 > 10.0.2.7.2049: Flags [.], seq
22848088:22850984, ack 67363421, win 24575, options [nop,nop,TS val 552550304 ecr
1340486158], length 2896
10:09:29.686527 IP 10.0.2.128.782 > 10.0.2.7.2049: Flags [.], seq
22850984:22877048, ack 67363421, win 24576, options [nop,nop,TS val 552550304 ecr
1340486158], length 26064
10:09:29.686774 IP 10.0.2.128.782 > 10.0.2.7.2049: Flags [.], seq
22877048:22906008, ack 67363421, win 24576, options [nop,nop,TS val 552550304 ecr
1340486158], length 28960
10:09:29.687010 IP 10.0.2.128.782 > 10.0.2.7.2049: Flags [P.], seq
22906008:22912924, ack 67363421, win 24576, options [nop,nop,TS val 552550304 ecr
1340486158], length 6916
I have to possibilities. My HP Switch is doing this with maybe mirror ports
(but not configured as I know)
The Proxmox Cluster show traffic on all Hosts. All my Hosts has the same
Traffic Account when I check the Graphs
My opinion is that it will be the Switch which makes wiered thinks.
Cheers
Daniel
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--
С уважением,
Иван Малярчук
"ИНТЕР-ТЕЛЕКОМ" Цифра
Украина, Киев
(044) 206-77-33 доб.155
www.cyfra.ua
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