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End.DX4
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| #!/bin/bash | |
| ## | |
| # ping client1(192.168.1.100) to client2(192.168.2.100) | |
| # | |
| # eth0 eth0 eth1 eth1 eth0 eth0 | |
| # (client1) ----------- (sr1) ----------- (sr2) ---------- (client2) | |
| # 192.168.1.100/24 192.168.2.100/24 | |
| ## | |
| # netns | |
| ip netns add client1 | |
| ip netns add sr1 | |
| ip netns add sr2 | |
| ip netns add client2 | |
| # veth | |
| ip link add name eth0 netns client1 type veth peer name eth0 netns sr1 | |
| ip link add name eth1 netns sr1 type veth peer name eth1 netns sr2 | |
| ip link add name eth0 netns sr2 type veth peer name eth0 netns client2 | |
| ip netns exec client1 ip link set up dev eth0 | |
| ip netns exec sr1 ip link set up dev eth0 | |
| ip netns exec sr1 ip link set up dev eth1 | |
| ip netns exec sr1 ip link set up dev lo | |
| ip netns exec sr2 ip link set up dev eth1 | |
| ip netns exec sr2 ip link set up dev eth0 | |
| ip netns exec sr2 ip link set up dev lo | |
| ip netns exec client2 ip link set up dev eth0 | |
| ip netns exec client1 ip address add 192.168.1.100/24 dev eth0 | |
| ip netns exec client1 ip route add default dev eth0 via 192.168.1.1 | |
| ip netns exec sr1 ip address add 192.168.1.1/24 dev eth0 | |
| ip netns exec sr1 ip -6 address add fc00::1/64 dev eth1 | |
| ip netns exec sr1 ip -6 address add fc00:1::1/128 dev lo | |
| ip netns exec sr1 ip -6 route add fc00:2::1/128 dev eth1 via fc00::2 | |
| ip netns exec sr2 ip address add 192.168.2.1/24 dev eth0 | |
| ip netns exec sr2 ip -6 address add fc00::2/64 dev eth1 | |
| ip netns exec sr2 ip -6 address add fc00:2::1/128 dev lo | |
| ip netns exec sr2 ip -6 route add fc00:1::1/128 dev eth1 via fc00::1 | |
| ip netns exec client2 ip address add 192.168.2.100/24 dev eth0 | |
| ip netns exec client2 ip route add default dev eth0 via 192.168.2.1 | |
| # seg6 enable | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.all.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.default.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.eth0.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.eth1.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv4.conf.all.rp_filter=0 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.all.forwarding=1 | |
| ip netns exec sr1 sysctl -w net.ipv4.conf.all.forwarding=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.all.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.default.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.eth0.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.eth1.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv4.conf.all.rp_filter=0 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.all.forwarding=1 | |
| ip netns exec sr2 sysctl -w net.ipv4.conf.all.forwarding=1 | |
| ## sr1 encap, decap | |
| # encap | |
| ip netns exec sr1 ip route add 192.168.2.0/24 encap seg6 mode encap segs fc00:2::1 dev eth1 | |
| # decap | |
| ip netns exec sr1 ip -6 route del local fc00:1::1 # 最初から設定されているloopback宛のlocal routeを削除 | |
| ip netns exec sr1 ip -6 route add local fc00:1::1 encap seg6local action End.DX4 nh4 192.168.1.100 dev eth0 | |
| ## sr2 encap, decap | |
| # encap | |
| ip netns exec sr2 ip route add 192.168.1.0/24 encap seg6 mode encap segs fc00:1::1 dev eth1 | |
| # decap | |
| ip netns exec sr2 ip -6 route del local fc00:2::1 # 最初から設定されているloopback宛のlocal routeを削除 | |
| ip netns exec sr2 ip -6 route add local fc00:2::1 encap seg6local action End.DX4 nh4 192.168.2.100 dev eth0 |
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| #!/bin/bash | |
| ## | |
| # ping client1(192.168.1.100) to client2(192.168.3.100) | |
| # | |
| # eth0 eth0 eth1 eth1 eth0 eth1 eth0 eth0 | |
| # (client1) ----------- (sr1) ----------- (sr2) ---------- (router1) --------- (client2) | |
| # 192.168.1.100/24 192.168.3.100/24 | |
| ## | |
| # netns | |
| ip netns add client1 | |
| ip netns add sr1 | |
| ip netns add sr2 | |
| ip netns add router1 | |
| ip netns add client2 | |
| # veth | |
| ip link add name eth0 netns client1 type veth peer name eth0 netns sr1 | |
| ip link add name eth1 netns sr1 type veth peer name eth1 netns sr2 | |
| ip link add name eth0 netns sr2 type veth peer name eth1 netns router1 | |
| ip link add name eth0 netns router1 type veth peer name eth0 netns client2 | |
| ip netns exec client1 ip link set up dev eth0 | |
| ip netns exec sr1 ip link set up dev eth0 | |
| ip netns exec sr1 ip link set up dev eth1 | |
| ip netns exec sr1 ip link set up dev lo | |
| ip netns exec sr2 ip link set up dev eth1 | |
| ip netns exec sr2 ip link set up dev eth0 | |
| ip netns exec sr2 ip link set up dev lo | |
| ip netns exec router1 ip link set up dev eth0 | |
| ip netns exec router1 ip link set up dev eth1 | |
| ip netns exec client2 ip link set up dev eth0 | |
| ip netns exec client1 ip address add 192.168.1.100/24 dev eth0 | |
| ip netns exec client1 ip route add default dev eth0 via 192.168.1.1 | |
| ip netns exec sr1 ip address add 192.168.1.1/24 dev eth0 | |
| ip netns exec sr1 ip -6 address add fc00::1/64 dev eth1 | |
| ip netns exec sr1 ip -6 address add fc00:1::1/128 dev lo | |
| ip netns exec sr1 ip -6 route add fc00:2::1/128 dev eth1 via fc00::2 | |
| ip netns exec sr2 ip address add 192.168.2.1/24 dev eth0 | |
| ip netns exec sr2 ip -6 address add fc00::2/64 dev eth1 | |
| ip netns exec sr2 ip -6 address add fc00:2::1/128 dev lo | |
| ip netns exec sr2 ip -6 route add fc00:1::1/128 dev eth1 via fc00::1 | |
| ip netns exec sr2 ip route add 192.168.3.0/24 dev eth0 via 192.168.2.100 | |
| ip netns exec router1 ip address add 192.168.2.100/24 dev eth1 | |
| ip netns exec router1 ip address add 192.168.3.1/24 dev eth0 | |
| ip netns exec router1 ip route add default dev eth1 via 192.168.2.1 | |
| ip netns exec client2 ip address add 192.168.3.100/24 dev eth0 | |
| ip netns exec client2 ip route add default dev eth0 via 192.168.3.1 | |
| # seg6 enable | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.all.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.default.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.eth0.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.eth1.seg6_enabled=1 | |
| ip netns exec sr1 sysctl -w net.ipv4.conf.all.rp_filter=0 | |
| ip netns exec sr1 sysctl -w net.ipv6.conf.all.forwarding=1 | |
| ip netns exec sr1 sysctl -w net.ipv4.conf.all.forwarding=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.all.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.default.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.eth0.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.eth1.seg6_enabled=1 | |
| ip netns exec sr2 sysctl -w net.ipv4.conf.all.rp_filter=0 | |
| ip netns exec sr2 sysctl -w net.ipv6.conf.all.forwarding=1 | |
| ip netns exec sr2 sysctl -w net.ipv4.conf.all.forwarding=1 | |
| ip netns exec router1 sysctl -w net.ipv4.conf.all.rp_filter=0 | |
| ip netns exec router1 sysctl -w net.ipv4.conf.all.forwarding=1 | |
| ## sr1 encap, decap | |
| # encap | |
| ip netns exec sr1 ip route add 192.168.3.0/24 encap seg6 mode encap segs fc00:2::1 dev eth1 | |
| # decap | |
| ip netns exec sr1 ip -6 route del local fc00:1::1 | |
| ip netns exec sr1 ip -6 route add local fc00:1::1 encap seg6local action End.DX4 nh4 192.168.1.100 dev eth0 | |
| ## sr2 encap, decap | |
| # encap | |
| ip netns exec sr2 ip route add 192.168.1.0/24 encap seg6 mode encap segs fc00:1::1 dev eth1 | |
| # decap | |
| ip netns exec sr2 ip -6 route del local fc00:2::1 | |
| ip netns exec sr2 ip -6 route add local fc00:2::1 encap seg6local action End.DX4 nh4 192.168.3.100 dev eth1 | |
| ## default route をrouter1に向けていいのであれば、下のような設定でも動く (10.1.1.1はダミーのアドレスで実際にはどのinterfaceにも設定されていない) | |
| # ip netns exec sr2 ip route add default dev eth0 via 192.168.2.100 | |
| # ip -6 r a local fc00:2::1 encap seg6local action End.DX4 nh4 10.1.1.1 dev lo | |
| #補足 | |
| # ip netns exec sr2 ip -6 route add local fc00:2::1 encap seg6local action End.DX4 nh4 192.168.2.100 dev eth1 | |
| # この設定を入れた状態でclient1からclient2(192.168.3.100)にpingを打つと、192.168.2.100宛に192.168.3.100のARP requestを投げる |
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env.shの構成 (inner packetの宛先がSR nodeとconnectedな場合)はわりと素直に設定すれば動くenv2.shの構成 (inner packetの宛先がSR nodeとconnectedではない場合)に同じ設定だとうまく動かないのでdirty hackっぽい設定が要る
end.dt4があればもう少し綺麗にできるのかも
※ end functionをlocal routeとして設定しているが、SID用のtableを用意するのが正しい設定方法なのかも