Interface¶

VPP command learned in this exercise¶

Topology¶

Figure: Create Interface Topology

Initial State¶

The initial state here is presumed to be the final state from the exercise VPP Basics

Create veth interfaces on host¶

In Linux, there is a type of interface call ‘veth’. Think of a ‘veth’ interface as being an interface that has two ends to it (rather than one).

Create a veth interface with one end named vpp1out and the other named vpp1host

$ sudo ip link add name vpp1out type veth peer name vpp1host

Turn up both ends:

$ sudo ip link set dev vpp1out up
$ sudo ip link set dev vpp1host up

Assign an IP address¶

$ sudo ip addr add 10.10.1.1/24 dev vpp1host

Display the result:

$ sudo ip addr show vpp1host
5: vpp1host@vpp1out: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
  link/ether e2:0f:1e:59:ec:f7 brd ff:ff:ff:ff:ff:ff
  inet 10.10.1.1/24 scope global vpp1host
     valid_lft forever preferred_lft forever
  inet6 fe80::e00f:1eff:fe59:ecf7/64 scope link
     valid_lft forever preferred_lft forever

Create vpp host-interface¶

Create a host interface attached to vpp1out.

vpp# create host-interface name vpp1out
host-vpp1out

Confirm the interface:

vpp# show hardware
              Name                Idx   Link  Hardware
host-vpp1out                       1     up   host-vpp1out
Ethernet address 02:fe:d9:75:d5:b4
Linux PACKET socket interface
local0                             0    down  local0
local

Turn up the interface:

vpp# set int state host-vpp1out up

Confirm the interface is up:

vpp# show int
              Name               Idx    State  MTU (L3/IP4/IP6/MPLS)     Counter          Count
host-vpp1out                      1      up          9000/0/0/0
local0                            0     down          0/0/0/0

Assign ip address 10.10.1.2/24

vpp# set int ip address host-vpp1out 10.10.1.2/24

Confirm the ip address is assigned:

vpp# show int addr
host-vpp1out (up):
  L3 10.10.1.2/24
local0 (dn):