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We have several servers connected to stack switches.
The servers have 2 x X520's and are connected 2x10GB(bonding).
After restarting one switch in the stack, the port that flaped not forwarded
packets except for arp(one way) and LACP is UP on two ports.
The problem occurs when the restarted switch returns and LACP will be connected.
LACP works incorrect and some packets are sent with a problematic link and they
do not reach their destination. We are seeing a lot of packet loss because of
this.
If you disable this port, the problem does not occur, if I enable it again, the
problem returns.
Restarting the server or reloading the network driver solves the problem until
the switch is restarted, e.g. during a switch upgrade.
Do you have any idea how to solve this problem or how to debug it?
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# cat /etc/netplan/01-netcfg.yaml
bonds:
bond0:
mtu: 9000
macaddress: 90:e2:ba:c9:b6:34
interfaces: [ens1f0, ens2f0]
parameters:
mode: 802.3ad
bond1:
mtu: 9000
macaddress: 90:e2:ba:c9:b6:35
interfaces: [ens1f1, ens2f1]
parameters:
mode: 802.3ad
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
uname -a
Linux server 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
# dpkg -l | grep bonding
ii ifenslave 2.9ubuntu1
all configure network interfaces for parallel routing (bonding)
# modinfo ixgbe
filename:
/lib/modules/5.4.0-26-generic/kernel/drivers/net/ethernet/intel/ixgbe/ixgbe.ko
version: 5.1.0-k
license: GPL v2
description: Intel(R) 10 Gigabit PCI Express Network Driver
author: Intel Corporation, <linux.n...@intel.com>
srcversion: 436CCBE2A80978751F572E6
# cat /proc/net/bonding/bond1
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0
802.3ad info
LACP rate: slow
Min links: 0
Aggregator selection policy (ad_select): stable
System priority: 65535
System MAC address: 3c:ec:ef:38:3b:4a
Active Aggregator Info:
Aggregator ID: 1
Number of ports: 2
Actor Key: 15
Partner Key: 5953
Partner Mac Address: 7c:1c:f1:88:33:31
Slave Interface: ens2f1
MII Status: up
Speed: 10000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 90:e2:ba:c9:b6:35
Slave queue ID: 0
Aggregator ID: 1
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0
details actor lacp pdu:
system priority: 65535
system mac address: 3c:ec:ef:38:3b:4a
port key: 15
port priority: 255
port number: 1
port state: 61
details partner lacp pdu:
system priority: 32768
system mac address: 7c:1c:f1:88:33:31
oper key: 5953
port priority: 32768
port number: 23
port state: 61
Slave Interface: ens1f1
MII Status: up
Speed: 10000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: f8:f2:1e:12:be:65
Slave queue ID: 0
Aggregator ID: 1
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0
details actor lacp pdu:
system priority: 65535
system mac address: 3c:ec:ef:38:3b:4a
port key: 15
port priority: 255
port number: 2
port state: 61
details partner lacp pdu:
system priority: 32768
system mac address: 7c:1c:f1:88:33:31
oper key: 5953
port priority: 32768
port number: 108
port state: 61
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
--
Port in LACP not forward packets after restart one switch in stack - Intel x520
(ixgbe)
https://bugs.launchpad.net/bugs/2000397
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