Configure VPP
```
vyos@vyos# set vpp settings interface eth1 driver xdp
[edit]
vyos@vyos# commit
[ vpp ]
WARNING: NOTE: Current dataplane capacity (estimated): 2.1 M IPv4
routes. Exceeding these values will lead to a dataplane out-of-memory
condition and a crash. Extensive use of features like ACLs, NAT and
others may reduce the numbers above. Please read the documentation for
details: https://docs.vyos.io/
[edit]
vyos@vyos# run show ip route
Codes: K - kernel route, C - connected, L - local, S - static,
R - RIP, O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
f - OpenFabric, t - Table-Direct,
> - selected route, * - FIB route, q - queued, r - rejected, b - backup
t - trapped, o - offload failure
S>* 0.0.0.0/0 [210/0] via 10.20.40.1, eth2, weight 1, 00:17:33
* via 10.217.32.254, eth3, weight 1, 00:17:33
C>* 10.20.40.0/24 is directly connected, eth2, weight 1, 00:17:33
K * 10.20.40.0/24 [0/0] is directly connected, eth2, weight 1, 00:17:33
L>* 10.20.40.141/32 is directly connected, eth2, weight 1, 00:17:33
C>* хх.хх.хх.0/24 is directly connected, eth3, weight 1, 00:17:37
K * хх.хх.хх.0/24 [0/0] is directly connected, eth3, weight 1, 00:17:37
L>* хх.хх.хх.131/32 is directly connected, eth3, weight 1, 00:17:37
C>* 192.0.0.0/24 is directly connected, eth1, weight 1, 00:00:46
K * 192.0.0.0/24 [0/0] is directly connected, eth1, weight 1, 00:00:46
L * 192.0.0.1/32 is directly connected, eth1, weight 1, 00:00:46
L>* 192.0.0.1/32 is directly connected, eth1, weight 1, 00:00:46
[edit]
vyos@vyos# ping 192.0.0.2
PING 192.0.0.2 (192.0.0.2) 56(84) bytes of data.
64 bytes from 192.0.0.2: icmp_seq=1 ttl=64 time=2.40 ms
64 bytes from 192.0.0.2: icmp_seq=2 ttl=64 time=0.972 ms
64 bytes from 192.0.0.2: icmp_seq=3 ttl=64 time=0.993 ms
^C
--- 192.0.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2004ms
rtt min/avg/max/mdev = 0.972/1.454/2.398/0.667 ms
[edit]
```
We can ping the neighbor
Now switch driver to dpdk->commit and again to xdp
```
vyos@vyos# set vpp settings interface eth1 driver xdp
[edit]
vyos@vyos# commit
[ vpp ]
WARNING: NOTE: Current dataplane capacity (estimated): 2.1 M IPv4
routes. Exceeding these values will lead to a dataplane out-of-memory
condition and a crash. Extensive use of features like ACLs, NAT and
others may reduce the numbers above. Please read the documentation for
details: https://docs.vyos.io/
[edit]
vyos@vyos# run show ip route
Codes: K - kernel route, C - connected, L - local, S - static,
R - RIP, O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, F - PBR,
f - OpenFabric, t - Table-Direct,
> - selected route, * - FIB route, q - queued, r - rejected, b - backup
t - trapped, o - offload failure
S>* 0.0.0.0/0 [210/0] via 10.20.40.1, eth2, weight 1, 00:19:03
* via 10.217.32.254, eth3, weight 1, 00:19:03
C>* 10.20.40.0/24 is directly connected, eth2, weight 1, 00:19:03
K * 10.20.40.0/24 [0/0] is directly connected, eth2, weight 1, 00:19:03
L>* 10.20.40.141/32 is directly connected, eth2, weight 1, 00:19:03
C>* хх.хх.хх.0/24 is directly connected, eth3, weight 1, 00:19:07
K * хх.хх.хх.0/24 [0/0] is directly connected, eth3, weight 1, 00:19:07
L>* хх.хх.хх.131/32 is directly connected, eth3, weight 1, 00:19:07
C>* 192.0.0.0/24 is directly connected, eth1, weight 1, 00:00:10
K * 192.0.0.0/24 [0/0] is directly connected, eth1, weight 1, 00:00:10
L * 192.0.0.1/32 is directly connected, eth1, weight 1, 00:00:10
L>* 192.0.0.1/32 is directly connected, eth1, weight 1, 00:00:10
L 192.0.0.1/32 is directly connected, unknown inactive, weight 1, 00:00:51
L 192.0.0.1/32 is directly connected, unknown inactive, weight 1, 00:02:16
[edit]
vyos@vyos# ping 192.0.0.2
PING 192.0.0.2 (192.0.0.2) 56(84) bytes of data.
From 192.0.0.1 icmp_seq=1 Destination Host Unreachable
From 192.0.0.1 icmp_seq=2 Destination Host Unreachable
From 192.0.0.1 icmp_seq=3 Destination Host Unreachable
^C
--- 192.0.0.2 ping statistics ---
6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 5118ms
pipe 4
```
Connectivity is lost and pings fail