Interface names when putting 802.1q VLAN on top of bonding configuration

[Jo-Philipp Wich]

Hi,

> One more question, now I'm trying to put a bridge on top of each of these vlan* interfaces so that I can map those to a few physical interfaces. I also need several vlans to map to one of the interfaces (tagged).. not sure how to do that yet either. Any suggestions with this config? When I apply it, I lose network access.

If you move an interface into a bridge (e.g. vlan10 into bv10) then you need
to put the IP addresses (172.20.32.250/255.255.255.0 for vlan10) onto the
bridge and remove it from vlan10. There is also no need to retain the `config
interface vlan10` section then anymore. Netdevs used as bridge ports cannot be
used standalone anymore.

Your config should look like that:

-- 8< --
config interface 'loopback'
	option ifname 'lo'
	option proto 'static'
	option ipaddr '127.0.0.1'
	option netmask '255.0.0.0'

config globals 'globals'
	option ula_prefix 'fdb9:bf48:0362::/48'

config interface lanxge
	option proto 'bonding'
	option auto '1'
	option bonding_policy '802.3ad'
	option link_monitoring 'mii'
	option slaves 'eth4 eth5'
	option lacp_rate 'fast'
	option miimon '100'
	option use_carrier 1
	option xmit_hash_policy 'layer3+4'
	option force_link '1'
	option ipaddr 127.0.0.2

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 10
	option name vlan10

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 20
	option name vlan20

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 21
	option name vlan21

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 30
	option name vlan30

config interface 'wan'
	option ifname 'eth0.0'
	option proto 'dhcp'

config interface bv10
	option type 'bridge'
	option ifname vlan10
	option proto static
	option ipaddr 172.20.32.250
	option netmask 255.255.255.0	

config interface bv20
	option type 'bridge'
	option ifname vlan20
	option proto static
	option ipaddr 172.20.34.2
	option netmask 255.255.255.128	

config interface bv21
	option type 'bridge'
	option ifname vlan21
	option proto static
	option ipaddr 172.20.35.3
	option netmask 255.255.255.240

config interface bv30
	option type 'bridge'
	option ifname vlan30
	option proto static
	option ipaddr 172.20.34.130
	option netmask 255.255.255.128
-- >8 --


Since legacy bridge declarations (through option type bridge in config
interface) are being phased out, your config ideally should look like that
(requires current master or OpenWrt 21.02 branch):

-- 8< --
config interface 'loopback'
	option ifname 'lo'
	option proto 'static'
	option ipaddr '127.0.0.1'
	option netmask '255.0.0.0'

config globals 'globals'
	option ula_prefix 'fdb9:bf48:0362::/48'

config interface lanxge
	option proto 'bonding'
	option auto '1'
	option bonding_policy '802.3ad'
	option link_monitoring 'mii'
	option slaves 'eth4 eth5'
	option lacp_rate 'fast'
	option miimon '100'
	option use_carrier 1
	option xmit_hash_policy 'layer3+4'
	option force_link '1'
	option ipaddr 127.0.0.2

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 10
	option name vlan10

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 20
	option name vlan20

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 21
	option name vlan21

config device
	option type 8021q
	option ifname bonding-lanxge
	option vid 30
	option name vlan30

config device
	option type bridge
	option name bv10
	list ports vlan10

config device
	option type bridge
	option name bv20
	list ports vlan20

config device
	option type bridge
	option name bv21
	list ports vlan21	

config device
	option type bridge
	option name bv30
	list ports vlan30

config interface 'wan'
	option ifname 'eth0.0'
	option proto 'dhcp'

config interface bv10
	option device bv10
	option proto static
	option ipaddr 172.20.32.250
	option netmask 255.255.255.0	

config interface bv20
	option device bv20
	option proto static
	option ipaddr 172.20.34.2
	option netmask 255.255.255.128	

config interface bv21
	option device bv21
	option proto static
	option ipaddr 172.20.35.3
	option netmask 255.255.255.240

config interface bv30
	option device bv30
	option proto static
	option ipaddr 172.20.34.130
	option netmask 255.255.255.128
-- 8< --


~ Jo

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