Basic Bridge Networking
This is an example of how to set up a VLAN transparent bridge with a DHCP assigned IP address. We have a system with two interfaces, or ports, named eth0 and eth1.
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admin@example:/> show interfaces
INTERFACE PROTOCOL STATE DATA
lo ethernet UP 00:00:00:00:00:00
ipv4 127.0.0.1/8 (static)
ipv6 ::1/128 (static)
eth0 ethernet UP 00:c0:ff:ee:00:01
ipv6 2001:db8:0:1:2c0:ffff:feee:1/64 (link-layer)
ipv6 fe80::2c0:ffff:feee:1/64 (link-layer)
eth1 ethernet UP 00:c0:ff:ee:00:02
ipv6 fe80::2c0:ffff:feee:2/64 (link-layer)
Creating a bridge and setting our interfaces as bridge ports is a straight forward operation.
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admin@example:/> configure
admin@example:/config/> set interface br0
admin@example:/config/> set interface eth0 bridge-port bridge br0
admin@example:/config/> set interface eth1 bridge-port bridge br0
Because it does not make much sense to have IP addresses on bridge ports, Infix takes care to disable IPv6 SLAAC on them automatically when we attach interfaces to a bridge.
We can use the diff command to inspect the changes. Notice how the system has automatically set the bridge interface type for us. This is a feature of the CLI and not available over NETCONF or RESTCONF.
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admin@example:/config/> diff
interfaces {
+ interface br0 {
+ type bridge;
+ }
interface eth0 {
+ bridge-port {
+ bridge br0;
+ }
}
interface eth1 {
+ bridge-port {
+ bridge br0;
+ }
}
}
Now we enable a DHCP client on br0 and activate the changes.
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admin@example:/config/> set dhcp-client client-if br0
admin@example:/config/> leave
admin@example:/>
Back in admin-exec mode we inspect the changes and notice the bridge has already got a DHCP lease from the server.
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admin@example:/> show interfaces
INTERFACE PROTOCOL STATE DATA
lo ethernet UP 00:00:00:00:00:00
ipv4 127.0.0.1/8 (static)
ipv6 ::1/128 (static)
br0 bridge
│ ethernet UP 00:c0:ff:ee:00:01
│ ipv4 192.168.1.161/24 (dhcp)
├ eth0 bridge FORWARDING
└ eth1 bridge FORWARDING
admin@example:/>
Remember to save your changes for next boot:
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admin@infix:/> copy running-config startup-config
For more information about networking in Infix, see the official documentation.