Static Route - esti-led/switchdev-trial GitHub Wiki
When an IP address in assigned to a Switchdev interface or its master bridge - a routing interface is created.
For each address and its broadcast and network addresses, traps are configured in PP to make sure that appropriate packets are delivered to the kernel.
For example:
$ sudo ip addr add 192.168.1.1/24 sw1p1
$ sudo ip link set dev sw1p1 up
$ sudo ip addr add 192.168.2.1/24 sw1p2
$ sudo ip link set dev sw1p1 up
NOTE: A configuration is applied only after the interface is set to admin UP.
Bridge Routing Interface
To create router interfaces on top of bridge netdev, an IP address has to be assigned.
For .1Q bridge, a router interface can be created for each of its upper VLAN devices.
For .1D a router interface can be created to the bridge itself only.
.1D Bridge Example:
$ ip link add name br0 type bridge
$ ip link set sw1p3 master br0
$ ip link set sw1p3 up
$ ip addr add 192.168.3.1/24 dev br0
$ ip link set br0 up
.1Q Bridge Example:
$ ip link add name br1 type bridge vlan filtering 1
$ ip link set sw1p4 master br0
$ ip link set sw1p4 up
$ ip link add link br0 name br0.10 type vlan id 10
$ bridge vlan add dev br0 vid 10 self
$ ip addr ass 192.1684.1/24 dev br0.10
Next-hop Routes
Static routes are added using the ip route command, provided by the iprote2 package.
Example of adding static routes:
$ sudo ip route add 10.10.1.0/24 via 192.168.1.2 dev sw1p1
To show Linux Routing table:
$ sudo ip route
$ 192.168.0.0/24 dev sw1p1 proto kernel scope link src
$ 192.168.0.1/24 offload
$ 192.168.1.0/24 dev sw1p2 proto kernel scope link src
$ 192.168.1.1/24 offload
$ 192.168.2.0/24 via 192.168.0.2 dev sw1p1 offload
Entries marked with offload flag are programmed to the PP.
NOTES
- Only IPv4 is supported.
- Linux Kernel forwarding MUST be enabled.
- Multicast routing is not supported.
- At least one switch port should be added (enslaved) to the bridge before assigning the IP address on the bridge. Otherwise the router interface for the bridge is not created.