Why inactive slave bonding received network package in redhat?

samran35 · August 13, 2019, 4:36am

bond0 active in eth0 and inactive in eth4. why eth4 received network package?

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eth0 (primary_reselect failure)
Currently Active Slave: eth0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: eth4
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 5
Permanent HW addr: 6c:ae:8b:51:26:ea
Slave queue ID: 0

Slave Interface: eth0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 2
Permanent HW addr: 90:e2:ba:4e:a5:20
Slave queue ID: 0

xI/F Name Recv=KB/s Trans=KB/s packin packout insize outsize Peak->Recv Trans                                                                               x
x      lo   170.1   170.1     933.2    933.2   186.7  186.7      575.3   575.3                                                                              x
x    eth0   153.9   248.4     330.4    403.9   477.0  629.9      447.7   766.9                                                                              x
x    eth1     2.9    58.9      45.0    114.5    66.0  527.2        5.3   163.9                                                                              x
x    eth2    35.5     5.3     107.0     97.5   340.0   55.4       73.4     9.1                                                                              x
x    eth3     0.0     0.0       0.0      0.0     0.0    0.0        0.0     0.0                                                                              x
x    eth4   146.1     0.0     243.9      0.0   613.4    0.0      434.9     0.0                                                                              x
x    eth5     0.0     0.0       0.5      0.0    60.0    0.0        0.1     0.0                                                                              x
x    eth6     0.1     0.0       1.0      0.0    92.0    0.0        0.4     0.0                                                                              x
x    eth7     0.0     0.0       0.0      0.0     0.0    0.0        0.6     0.0                                                                              x
x    usb0     0.0     0.0       0.0      0.0     0.0    0.0        0.0     0.0                                                                              x
x   bond0   300.0   248.4     574.3    403.9   534.9  629.9      882.6   766.9                                                                              x
x   bond1     2.9    58.9      45.5    114.5    65.9  527.2        5.3   163.9                                                                              x
x   bond2    35.6     5.3     108.0     97.5   337.7   55.4       73.5     9.1                                                                              x
x   bond3     0.0     0.0       0.0      0.0     0.0    0.0        0.6     0.0

gull04 · August 13, 2019, 7:51am

Hi,

It's likely to be because of the link failures on eth0, where it will fail over to eth4.

Regards

Gull04

rbatte1 · August 13, 2019, 12:14pm

Further to what my learned friend Gull04 has written, you have failure on eth4 too, so the IP will have moved back to eth0 again.

I hope that this helps,
Robin

samran35 · August 13, 2019, 10:31pm

Now active in eth0. eth4 not active. why eth4 still receive package but no transmission package from eth4.

Recv bond0=eth0+eth4
Trans bond0=eth0
xI/F Name Recv=KB/s Trans=KB/s packin packout insize outsize Peak->Recv Trans                                                                               x
x      lo     7.7     7.7      51.0     51.0   154.1  154.1       28.5    28.5                                                                              x
x    eth0     3.1     8.8      21.5     24.0   147.1  376.8        5.3    11.5                                                                              x
x    eth1     0.3     3.5       4.5      8.5    69.1  418.8        0.8     6.0                                                                              x
x    eth2     1.0     0.2       6.5      4.5   153.9   54.0        1.1     0.4                                                                              x
x    eth3     0.0     0.0       0.0      0.0     0.0    0.0        0.0     0.0                                                                              x
x    eth4     2.4     0.0      13.5      0.0   182.8    0.0        3.9     0.0                                                                              x
x    eth5     0.0     0.0       0.5      0.0    60.0    0.0        0.0     0.0                                                                              x
x    eth6     0.2     0.0       2.0      0.0    92.0    0.0        0.2     0.0                                                                              x
x    eth7     0.0     0.0       0.0      0.0     0.0    0.0        0.0     0.0                                                                              x
x    usb0     0.0     0.0       0.0      0.0     0.0    0.0        0.0     0.0                                                                              x
x   bond0     5.5     8.8      35.0     24.0   160.9  376.8        9.1    11.5                                                                              x
x   bond1     0.3     3.5       5.0      8.5    68.2  418.8        0.8     6.0                                                                              x
x   bond2     1.2     0.2       8.5      4.5   139.4   54.0        1.2     0.4                                                                              x
x   bond3     0.0     0.0       0.0      0.0     0.0    0.0        0.0     0.0

gull04 · August 14, 2019, 7:29am

Hi Samran,

This seems to be standard traffic on the bonded interfaces, here I have a bond (bond0) comprising eno1 and ens2f1. As you can see the secondary interface has some Recieved Packets, probably just the bond checking that it's active.

xI/F Name Recv=KB/s Trans=KB/s packin packout insize outsize Peak->Recv Trans
x    eno1      1.9       0.5      13.5    2.5   145.7  201.2        3.7     15.9
x    eno2      0.0       0.0       0.0    0.0     0.0    0.0        0.0      0.0
x    eno3      0.0       0.0       0.0    0.0     0.0    0.0        0.0      0.0
x    eno4      0.0       0.0       0.0    0.0     0.0    0.0        0.0      0.0
x   bond0      1.9       0.5      13.5    2.5   145.7  201.2        3.7     15.9
x      lo      5.6       5.6      21.0   21.0   274.9  274.9       53.3     53.3
x  ens2f0      0.0       0.0       0.0    0.0     0.0    0.0        0.0      0.0
x  ens2f1      0.7       0.0       5.0    0.0   136.7    0.0        2.3      0.0

If you need further validation on your server, then I'd suggest that you would maybe want to run;

># tcpdump -i eth4

Please note depending on network traffic you will probably see significant output.

Regards

Gull04