How to Centos multi VLAN tagging one network port ?

hossammutir · 01-24-2017, 02:44 PM

hello
I'm trying to use two VLANs (VLAN 43 & VLAN 44) in same eth card in linux Centos 7 and Cisco switch trunk for the eth port.

My configuration is:

Quote:

[root@rdo1 network-scripts]# cat ifcfg-eth2
TYPE=Ethernet
DEFROUTE=no
NAME=eth2
DEVICE=eth2
ONBOOT=yes
IPV6INIT=no
NM_CONTROLLED=no

Quote:

[root@rdo1 network-scripts]# cat ifcfg-eth2.43
VLAN=yes
VLAN_NAME_TYPE=VLAN_PLUS_VID_NO_PAD
PHYSDEV=eth2
DEVICE=eth2.43
BOOTPROTO=static
ONBOOT=yes
IPADDR=10.13.43.24
NETMASK=255.255.255.0

Quote:

[root@rdo1 network-scripts]# cat ifcfg-eth2.44
VLAN=yes
VLAN_NAME_TYPE=VLAN_PLUS_VID_NO_PAD
PHYSDEV=eth2
DEVICE=eth2.44
BOOTPROTO=static
ONBOOT=yes
IPADDR=10.13.44.24
NETMASK=255.255.255.0

Cisco configuration:

Quote:

vlan 43-44

!
int gi3/1
no ip address
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 43,44
switchport mode trunk
no mdix auto
storm-control broadcast level 10.00
spanning-tree bpdufilter enable
no cdp enable
!
end

My network configuration according to ifconfig is:

Quote:

[root@rdo1 network-scripts]# ifconfig
eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::29c:2ff:fea1:35a4 prefixlen 64 scopeid 0x20<link>
ether 00:9c:02:a1:35:a4 txqueuelen 1000 (Ethernet)
RX packets 164 bytes 17921 (17.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 29 bytes 2424 (2.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eth2.43: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.13.43.24 netmask 255.255.255.0 broadcast 10.13.43.255
inet6 fe80::29c:2ff:fea1:35a4 prefixlen 64 scopeid 0x20<link>
ether 00:9c:02:a1:35:a4 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9 bytes 690 (690.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eth2.44: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.13.44.24 netmask 255.255.255.0 broadcast 10.13.44.255
inet6 fe80::29c:2ff:fea1:35a4 prefixlen 64 scopeid 0x20<link>
ether 00:9c:02:a1:35:a4 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 816 (816.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

I want to know how to add gateway for every VLAN. I tried routing tables and they didn't work for me.

Does anyone know how to do this?

netguy2000 · 02-04-2017, 08:17 AM

hi there,
please use GATEWAY=xxx.xxx.xxx.xxx to add gateway for each interface in each file,
by the way why you want to add gateway for each interface, your config looks like you are try to configure gateway machine for users. or........ plz explain.

netguy.