Connecting two FD.io VPP Instances¶
memif is a very high performance, direct memory interface type which can be used between FD.io VPP instances to form a topology. It uses a file socket for a control channel to set up that shared memory.
Skills to be Learned¶
You will learn the following new skill in this exercise:
- Create a memif interface between two FD.io VPP instances
You should be able to perform this exercise with the following skills learned in previous exercises:
- Run a second FD.io VPP instance
- Add an ip address to a FD.io VPP interface
- Ping from FD.io VPP
Topology¶
Initial state¶
The initial state here is presumed to be the final state from the exercise Create an Interface
Running a second FD.io VPP instances¶
You should already have a FD.io VPP instance running named: vpp1.
Run a second FD.io VPP instance named: vpp2.
Create memif interface on vpp1¶
Create a memif interface on vpp1:
vpp# create interface memif id 0 master
This will create an interface on vpp1 memif0/0 using /run/vpp/memif as its socket file. The role of vpp1 for this memif inteface is ‘master’.
Use your previously used skills to:
- Set the memif0/0 state to up.
- Assign IP address 10.10.2.1/24 to memif0/0
- Examine memif0/0 via show commands
Create memif interface on vpp2¶
We want vpp2 to pick up the ‘slave’ role using the same run/vpp/memif-vpp1vpp2 socket file
vpp# create interface memif id 0 slave
This will create an interface on vpp2 memif0/0 using /run/vpp/memif as its socket file. The role of vpp1 for this memif inteface is ‘slave’.
Use your previously used skills to:
- Set the memif0/0 state to up.
- Assign IP address 10.10.2.2/24 to memif0/0
- Examine memif0/0 via show commands
Ping from vpp1 to vpp2¶
Ping 10.10.2.2 from vpp1
$ ping 10.10.2.2
Ping 10.10.2.1 from vpp2
$ ping 10.10.2.1