vl3-ipv6

vL3 IPv6 single cluster example

This example shows how could be configured vL3 IPv6 network via NSM.

Diagram:

NOTE: Forwarder and NSMmgr are not added in the diagram for the simplicity

Run

Deploy network service, nsc and vl3 nses (See at kustomization.yaml):

kubectl apply -k https://github.com/networkservicemesh/deployments-k8s/examples/features/vl3-ipv6?ref=7d9096404c273143d4925deaabb991e705909289

Wait for clients to be ready:

kubectl wait --for=condition=ready --timeout=2m pod -l app=alpine -n ns-vl3-ipv6

Find all nscs:

nscs=$(kubectl get pods -n ns-vl3-ipv6 -l app=alpine -o go-template --template="{{range .items}}{{.metadata.name}} {{end}}")
[[ ! -z $nscs ]]

Ping each client by each client:

(
for nsc in $nscs
do
    ipAddr=$(kubectl exec -n ns-vl3-ipv6 $nsc -- ifconfig nsm-1) || exit
    ipAddr=$(echo $ipAddr | grep -Eo 'inet6 addr: 2001:.*' | cut -d ' ' -f 3 | cut -d '/' -f 1)
    for pinger in $nscs
    do
        if [ "$nsc" != "$pinger" ]; then
            echo $pinger pings $ipAddr
            kubectl exec $pinger -n ns-vl3-ipv6 -- ping6 -c2 -i 0.5 $ipAddr || exit
        fi
    done
done
)

Ping each vl3-nse by each client. Note: ipam prefix is 2001:db8::/64 and client prefix len is 112. We also have two vl3 nses in this example. So we expect to have two vl3 addresses: 2001:db8:: and 2001:db8::1:0 that should be accessible by each client.

(
for nsc in $nscs
do
    echo $nsc pings nses
    kubectl exec -n ns-vl3-ipv6 $nsc -- ping6 2001:db8:: -c2 -i 0.5 || exit
    kubectl exec -n ns-vl3-ipv6 $nsc -- ping6 2001:db8::1:0 -c2 -i 0.5 || exit
done
)

Cleanup

To cleanup the example just follow the next command:

kubectl delete ns ns-vl3-ipv6