Ethernet is a router interface - cannot Native VLAN nor Tag Traffic on Ports

Matt Mabis

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Oct 29, 2021, 12:18:04 AM10/29/21

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Hello,

New to Sonic however i cannot seem to figure out why this exists, im using a Mellanox SN2700 with Sonic.Latest and i have created a VLAN but when i try to add members to it i get the following

admin@sonic:~$ sudo config vlan member add 1024 Ethernet32

Usage: config vlan member add [OPTIONS] <vid> port

Try "config vlan member add -h" for help.

Error: Ethernet32 is a router interface!

admin@sonic:~$

I can see that my interfaces on VLAN are marked as Routed, however i cannot seem to get them to migrate from routed status to Tagged or Untagged (Native VLAN) states... how does one do this, theres no documentation that refers to the error im getting and how to pull interfaces out of being a router interface

admin@sonic:~$ show interfaces status

Interface Lanes Speed MTU FEC Alias Vlan Oper Admin Type Asym PFC

----------- --------------- ------- ----- ----- ------- ------ ------ ------- -------------- ----------

Ethernet0 0,1,2,3 10G 9100 N/A etp1 routed up up SFP/SFP+/SFP28 N/A

Ethernet4 4,5,6,7 100G 9100 N/A etp2 routed down up N/A N/A

Ethernet8 8,9,10,11 100G 9100 N/A etp3 routed down up N/A N/A

Ethernet12 12,13,14,15 100G 9100 N/A etp4 routed down up N/A N/A

Ethernet16 16,17,18,19 100G 9100 N/A etp5 routed down up N/A N/A

Ethernet20 20,21,22,23 100G 9100 N/A etp6 routed down up N/A N/A

Ethernet24 24,25,26,27 100G 9100 N/A etp7 routed down up N/A N/A

Ethernet28 28,29,30,31 100G 9100 N/A etp8 routed down up N/A N/A

Ethernet32 32,33,34,35 40G 9100 N/A etp9 routed up up QSFP+ or later N/A

Ethernet36 36,37,38,39 100G 9100 N/A etp10 routed down up N/A N/A

Ethernet40 40,41,42,43 40G 9100 N/A etp11 routed up up QSFP+ or later N/A

Ethernet44 44,45,46,47 100G 9100 N/A etp12 routed down up N/A N/A

Ethernet48 48,49,50,51 100G 9100 N/A etp13 routed down up N/A N/A

Ethernet52 52,53,54,55 100G 9100 N/A etp14 routed down up N/A N/A

Ethernet56 56,57,58,59 100G 9100 N/A etp15 routed down up N/A N/A

Ethernet60 60,61,62,63 100G 9100 N/A etp16 routed down up N/A N/A

Ethernet64 64,65,66,67 40G 9100 N/A etp17 routed up up QSFP+ or later N/A

Ethernet68 68,69,70,71 100G 9100 N/A etp18 routed down up N/A N/A

Ethernet72 72,73,74,75 40G 9100 N/A etp19 routed up up QSFP+ or later N/A

Ethernet76 76,77,78,79 100G 9100 N/A etp20 routed down up N/A N/A

Ethernet80 80,81,82,83 100G 9100 N/A etp21 routed down up N/A N/A

Ethernet84 84,85,86,87 100G 9100 N/A etp22 routed down up N/A N/A

Ethernet88 88,89,90,91 100G 9100 N/A etp23 routed down up N/A N/A

Ethernet92 92,93,94,95 100G 9100 N/A etp24 routed down up N/A N/A

Ethernet96 96,97,98,99 100G 9100 N/A etp25 routed down up N/A N/A

Ethernet100 100,101,102,103 100G 9100 N/A etp26 routed down up N/A N/A

Ethernet104 104,105,106,107 100G 9100 N/A etp27 routed down up N/A N/A

Ethernet108 108,109,110,111 100G 9100 N/A etp28 routed down up N/A N/A

Ethernet112 112,113,114,115 100G 9100 N/A etp29 routed down up N/A N/A

Ethernet116 116,117,118,119 100G 9100 N/A etp30 routed down up N/A N/A

Ethernet120 120,121,122,123 100G 9100 N/A etp31 routed down up N/A N/A

Ethernet124 124,125,126,127 100G 9100 N/A etp32 routed down up N/A N/A

Jin zhang

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Oct 29, 2021, 1:07:27 AM10/29/21

to Matt Mabis, sonicproject

Before adding VLAN member, try remove IP address first:

sudo config interface ip remove Ethernet32 <ip_address>

BR,

--Jin

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Matt Mabis

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Oct 29, 2021, 3:02:10 AM10/29/21

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Hello Jin,

Thanks for your help!!!

Interesting, is this common with a fresh installation of the OS for IP addresses to be there or could it have been a previous config stored somewhere where the data was at? (These were Switches off ebay)

admin@sonic:~$ show ip interfaces

Interface Master IPv4 address/mask Admin/Oper BGP Neighbor Neighbor IP

----------- -------- ------------------- ------------ -------------- -------------

Ethernet0 10.0.0.0/31 up/down ARISTA01T2 10.0.0.1

Ethernet4 10.0.0.2/31 up/down ARISTA02T2 10.0.0.3

Ethernet8 10.0.0.4/31 up/down ARISTA03T2 10.0.0.5

Ethernet12 10.0.0.6/31 up/down ARISTA04T2 10.0.0.7

Ethernet16 10.0.0.8/31 up/down ARISTA05T2 10.0.0.9

Ethernet20 10.0.0.10/31 up/down ARISTA06T2 10.0.0.11

Ethernet24 10.0.0.12/31 up/down ARISTA07T2 10.0.0.13

Ethernet28 10.0.0.14/31 up/down ARISTA08T2 10.0.0.15

Ethernet32 10.0.0.16/31 up/down ARISTA09T2 10.0.0.17

Ethernet36 10.0.0.18/31 up/down ARISTA10T2 10.0.0.19

Ethernet40 10.0.0.20/31 up/down ARISTA11T2 10.0.0.21

Ethernet44 10.0.0.22/31 up/down ARISTA12T2 10.0.0.23

Ethernet48 10.0.0.24/31 up/down ARISTA13T2 10.0.0.25

Ethernet52 10.0.0.26/31 up/down ARISTA14T2 10.0.0.27

Ethernet56 10.0.0.28/31 up/down ARISTA15T2 10.0.0.29

Ethernet60 10.0.0.30/31 up/down ARISTA16T2 10.0.0.31

Ethernet64 10.0.0.32/31 up/down ARISTA01T0 10.0.0.33

Ethernet68 10.0.0.34/31 up/down ARISTA02T0 10.0.0.35

Ethernet72 10.0.0.36/31 up/down ARISTA03T0 10.0.0.37

Ethernet76 10.0.0.38/31 up/down ARISTA04T0 10.0.0.39

Ethernet80 10.0.0.40/31 up/down ARISTA05T0 10.0.0.41

Ethernet84 10.0.0.42/31 up/down ARISTA06T0 10.0.0.43

Ethernet88 10.0.0.44/31 up/down ARISTA07T0 10.0.0.45

Ethernet92 10.0.0.46/31 up/down ARISTA08T0 10.0.0.47

Ethernet96 10.0.0.48/31 up/down ARISTA09T0 10.0.0.49

Ethernet100 10.0.0.50/31 up/down ARISTA10T0 10.0.0.51

Ethernet104 10.0.0.52/31 up/down ARISTA11T0 10.0.0.53

Ethernet108 10.0.0.54/31 up/down ARISTA12T0 10.0.0.55

Ethernet112 10.0.0.56/31 up/down ARISTA13T0 10.0.0.57

Ethernet116 10.0.0.58/31 up/down ARISTA14T0 10.0.0.59

Ethernet120 10.0.0.60/31 up/down ARISTA15T0 10.0.0.61

Ethernet124 10.0.0.62/31 up/down ARISTA16T0 10.0.0.63

Loopback0 10.1.0.1/32 up/up N/A N/A

Vlan1024 10.20.0.254/16 up/down N/A N/A

Vlan1025 10.10.30.254/24 up/down N/A N/A

docker0 240.127.1.1/24 up/down N/A N/A

eth0 10.192.1.246/24 up/up N/A N/A

lo 127.0.0.1/16 up/up N/A N/A

Once removed i was able to add the VLAN interafaces correctly,

flyse...@gmail.com

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Nov 2, 2021, 4:48:30 AM11/2/21

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In a fresh installation, the config_db.json is not existed in the system,

SONiC will generate default config using t1 preset, that's why you see many ip address configured on the interface.

Jimi

Matt Mabis 在 2021年10月29日星期五下午3:02:10 [UTC+8] 的信中寫道：

Pablo Thurler

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Nov 2, 2021, 9:24:29 PM11/2/21

to flyse...@gmail.com, sonicproject

hello all,

How can add to , "show interface status", the interface eth0 ?

When list "show ip interfaces", the system list a one interface eth0 and is a RJ45 management,
but when using "show interface status", the eth0 no have into list.

thanks

Pablo Thurler

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zongbin tu

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Jan 7, 2024, 10:03:52 PM1/7/24

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This answer solved my problem

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