[PVE-User] Traffic from other Servers

Daniel daniel at linux-nerd.de
Fri Nov 3 10:20:40 CET 2017


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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