network issues / download speed drops

D

digitech1

New Member
Jan 2, 2023
6
0
1
Hi team,
I have an issue with my network. I am running Proxmox 7.3 6.1kernel on my intel nuc with 2 LXC containers and 2 VMs. My NUC is currently connected to a Fritzbox Router and then goes out the internet. On that Fritzbox I also have a bridged Wifi - it's all in the 192.168.0.0./24 subnet.

After a while my network gets sluggish and download speed drops significantly from 500mbit to 100mbit and less, both on the Proxmox side as well as Wifi. I was wondering why so I began troubleshooting. I shut down each VM/LXC after another and checked again, no difference. After reboot of Proxmox Server, everything is back to normal. Download speed on my wifi goes back to 500mbit. I was trying to see what I see on the wire / air with wireshark but couldnt see anything unusual.


Can anybody explain that to me? on the proxmox side I see the following in journalctl every now and then:

Jan 04 12:09:38 pve kernel: br-789992a872d6: port 3(vetha642f2f) entered disabled state
Jan 04 12:09:38 pve kernel: device vetha642f2f left promiscuous mode
Jan 04 12:09:38 pve kernel: br-789992a872d6: port 3(vetha642f2f) entered disabled state
Jan 04 12:09:41 pve kernel: br-789992a872d6: port 3(veth245ed39) entered blocking state
Jan 04 12:09:41 pve kernel: br-789992a872d6: port 3(veth245ed39) entered disabled state
Jan 04 12:09:41 pve kernel: device veth245ed39 entered promiscuous mode
Jan 04 12:09:42 pve kernel: eth0: renamed from veth3595de3
Jan 04 12:09:42 pve kernel: IPv6: ADDRCONF(NETDEV_CHANGE): veth245ed39: link becomes ready
Jan 04 12:09:42 pve kernel: br-789992a872d6: port 3(veth245ed39) entered blocking state
Jan 04 12:09:42 pve kernel: br-789992a872d6: port 3(veth245ed39) entered forwarding state
Jan 04 12:09:43 pve kernel: br-789992a872d6: port 2(vethe631878) entered disabled state

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp100s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
link/ether 48:21:0b:3e:db:d6 brd ff:ff:ff:ff:ff:ff
3: wlo1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 04:cf:4b:47:af:e5 brd ff:ff:ff:ff:ff:ff
altname wlp0s20f3
4: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 48:21:0b:3e:db:d6 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.100/24 scope global vmbr0
valid_lft forever preferred_lft forever
inet6 fe80::4a21:bff:fe3e:dbd6/64 scope link
valid_lft forever preferred_lft forever
5: tap101i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UNKNOWN group default qlen 1000
link/ether 2a:59:43:1b:b6:69 brd ff:ff:ff:ff:ff:ff
6: tap101i1: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr101i1 state UNKNOWN group default qlen 1000
link/ether aa:67:c4:22:fc:1c brd ff:ff:ff:ff:ff:ff
7: fwbr101i1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether d6:d8:80:78:b6:7d brd ff:ff:ff:ff:ff:ff
8: fwpr101p1@fwln101i1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
link/ether 16:2f:cd:9e:9a:2d brd ff:ff:ff:ff:ff:ff
9: fwln101i1@fwpr101p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr101i1 state UP group default qlen 1000
link/ether ee:a2:65:77:3e:c6 brd ff:ff:ff:ff:ff:ff
10: tap101i2: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr101i2 state UNKNOWN group default qlen 1000
link/ether de:bf:1e:78:91:5e brd ff:ff:ff:ff:ff:ff
11: fwbr101i2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether d2:a9:47:a9:df:78 brd ff:ff:ff:ff:ff:ff
12: fwpr101p2@fwln101i2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
link/ether 46:37:5e:bd:a7:49 brd ff:ff:ff:ff:ff:ff
13: fwln101i2@fwpr101p2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr101i2 state UP group default qlen 1000
link/ether 7a:bf:47:d4:74:fa brd ff:ff:ff:ff:ff:ff
14: tap101i3: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master fwbr101i3 state UNKNOWN group default qlen 1000
link/ether 8a:98:24:62:df:69 brd ff:ff:ff:ff:ff:ff
15: fwbr101i3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether f2:7b:5d:f7:46:90 brd ff:ff:ff:ff:ff:ff
16: fwpr101p3@fwln101i3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
link/ether 1e:35:75:a0:fc:0d brd ff:ff:ff:ff:ff:ff
17: fwln101i3@fwpr101p3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr101i3 state UP group default qlen 1000
link/ether 16:76:63:f1:b5:83 brd ff:ff:ff:ff:ff:ff
18: veth201i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr201i0 state UP group default qlen 1000
link/ether fe:81:3b:8f:35:21 brd ff:ff:ff:ff:ff:ff link-netnsid 0
19: fwbr201i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 5e:14:66:91:67:c7 brd ff:ff:ff:ff:ff:ff
20: fwpr201p0@fwln201i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
link/ether 26:0b:80:8e:da:61 brd ff:ff:ff:ff:ff:ff
21: fwln201i0@fwpr201p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr201i0 state UP group default qlen 1000
link/ether f2:90:28:0e:20:d6 brd ff:ff:ff:ff:ff:ff
22: veth202i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr202i0 state UP group default qlen 1000
link/ether fe:12:48:b6:f1:bf brd ff:ff:ff:ff:ff:ff link-netnsid 1
23: fwbr202i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 7e:c8:08:b2:b5:1d brd ff:ff:ff:ff:ff:ff
24: fwpr202p0@fwln202i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
link/ether 9a:58:61:61:69:51 brd ff:ff:ff:ff:ff:ff


thanks for helping out here
 
Last edited:
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