|
|
| Line 1: |
Line 1: |
| − | This document provides instructions for a quick hands-on for VPP newcomers. It introduces basic VPP commands used to create and debug a simple virtual switched and routed network consisting of a tap interface as well as a couple of virtual-ethernet interfaces, connected through VPP.
| + | Please see [https://fd.io/docs/vpp/master/gettingstarted/progressivevpp/index.html| the new documentation] |
| − | | + | |
| − | [[File:Routing and Switching Tutorial Topology.jpg|thumb|This shows the tutorial topology used in the Routing and Switching VPP tutorial.]]
| + | |
| − | | + | |
| − | == Prerequisites ==
| + | |
| − | | + | |
| − | For this tutorial, you will need a Linux environment with VPP installed.
| + | |
| − | You can follow [[VPP/Pulling,_Building,_Running,_Hacking_and_Pushing_VPP_Code|this tutorial]] to setup your development environment.
| + | |
| − | | + | |
| − | == Running vpp ==
| + | |
| − | | + | |
| − | === Start VPP ===
| + | |
| − | | + | |
| − | If you installed VPP using the vagrant tutorial, do <code>vagrant up</code> and <code>vagrant ssh</code> in VPP's vagrant directory. VPP should be already be running.
| + | |
| − | ~$ vppctl show version
| + | |
| − | vpp v1.0.0-433~gb53693a-dirty built by vagrant on localhost at Wed May 4 03:03:02 PDT 2016
| + | |
| − | | + | |
| − | If the previous command did not work, vpp is either not installed, or not running.
| + | |
| − | ~$ start vpp
| + | |
| − | | + | |
| − | If VPP is not installed on the system, but rather compiled in its source directory, first make sure that VPP binary directory is in your $PATH environment variable. If not, you may run the following command by replacing <PATH_TO_VPP> with VPP source code directory:
| + | |
| − | ~$ export PATH=$PATH:<PATH_TO_VPP>/build-root/build-vpp_debug-native/vpp/bin/
| + | |
| − | | + | |
| − | Then, you may start VPP as a background process by executing:
| + | |
| − | ~$ vpp
| + | |
| − | | + | |
| − | You may also start it in interactive mode with the following command.
| + | |
| − | ~$ vpp unix { interactive }
| + | |
| − | | + | |
| − | Interactive mode means that you will be able to enter VPP CLI commands just like if they were executed using <code>vppctl ''your command''</code>.
| + | |
| − | From now on, we will use <code>vppctl</code>, but you can use VPP's interactive mode if you want.
| + | |
| − | | + | |
| − | | + | |
| − | === Basic VPP commands ===
| + | |
| − | | + | |
| − | Execute the following commands.
| + | |
| − | | + | |
| − | ~# vppctl show interface
| + | |
| − | Name Idx State Counter Count
| + | |
| − | GigabitEthernet0/8/0 5 down
| + | |
| − | GigabitEthernet0/9/0 6 down
| + | |
| − | local0 0 down
| + | |
| − | pg/stream-0 1 down
| + | |
| − | pg/stream-1 2 down
| + | |
| − | pg/stream-2 3 down
| + | |
| − | pg/stream-3 4 down
| + | |
| − | | + | |
| − | In this example, the VM has two PCI interfaces, owned by DPDK drivers. DPDK runs in polling mode, which means that the single VPP thread currently takes 100% CPU.
| + | |
| − | | + | |
| − | ~# top
| + | |
| − | PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
| + | |
| − | 8845 root 20 0 2123488 26908 9752 R 97.1 0.7 1:01.59 vpp_main
| + | |
| − | | + | |
| − | It is also possible that, in the case of a very simple setup without any DPDK interfaces, you only see:
| + | |
| − | ~# vppctl show interface
| + | |
| − | Name Idx State Counter Count
| + | |
| − | local0 0 down
| + | |
| − | | + | |
| − | VPP Debug CLI implements a lot of different commands. You can display CLI help with '?'.
| + | |
| − | | + | |
| − | ~# vppctl ?
| + | |
| − | ...
| + | |
| − | ~# vppctl show ?
| + | |
| − | ...
| + | |
| − | | + | |
| − | == Virtual Network Setup ==
| + | |
| − | | + | |
| − | VPP supports two non-DPDK drivers for communications with Linux namespaces:
| + | |
| − | * '''veth''' interfaces with vpp ''host'' interfaces (based on efficient AF_PACKET shared memory with kernel). Click here for more information about [http://blog.scottlowe.org/2013/09/04/introducing-linux-network-namespaces/ veth interfaces and Linux network namespaces].
| + | |
| − | * '''tap''' interfaces from Linux's tuntap support.
| + | |
| − | | + | |
| − | This tutorial is going to use 3 different namespaces: ''ns0'', ''ns1'', and ''ns2''. ''ns0'' and ''ns1'' will be connected to VPP by the mean of veth interfaces, while ''ns2'' will be using a tap interface.
| + | |
| − | | + | |
| − | === ns0, ns1 and veth interfaces ===
| + | |
| − | | + | |
| − | Let's configure ns0.
| + | |
| − | | + | |
| − | ~# ip netns add ns0
| + | |
| − | ~# ip link add vpp0 type veth peer name vethns0
| + | |
| − | ~# ip link set vethns0 netns ns0
| + | |
| − | ~# ip netns exec ns0 ip link set lo up
| + | |
| − | ~# ip netns exec ns0 ip link set vethns0 up
| + | |
| − | ~# ip netns exec ns0 ip addr add 2001::1/64 dev vethns0
| + | |
| − | ~# ip netns exec ns0 ip addr add 10.0.0.1/24 dev vethns0
| + | |
| − | ~# ip netns exec ns0 ethtool -K vethns0 rx off tx off
| + | |
| − | | + | |
| − | ~# ip link set vpp0 up
| + | |
| − | | + | |
| − | And do the same for ns1.
| + | |
| − | | + | |
| − | ~# ip netns add ns1
| + | |
| − | ~# ip link add vpp1 type veth peer name vethns1
| + | |
| − | ~# ip link set vethns1 netns ns1
| + | |
| − | ~# ip netns exec ns1 ip link set lo up
| + | |
| − | ~# ip netns exec ns1 ip link set vethns1 up
| + | |
| − | ~# ip netns exec ns1 ip addr add 2001::2/64 dev vethns1
| + | |
| − | ~# ip netns exec ns1 ip addr add 10.0.0.2/24 dev vethns1
| + | |
| − | ~# ip netns exec ns1 ethtool -K vethns1 rx off tx off
| + | |
| − | ~# ip link set vpp1 up
| + | |
| − | | + | |
| − | Now on VPP side.
| + | |
| − | | + | |
| − | Let's create the host (af-packet) interfaces and set them up.
| + | |
| − | ~# vppctl create host-interface name vpp0
| + | |
| − | ~# vppctl create host-interface name vpp1
| + | |
| − | ~# vppctl set interface state host-vpp0 up
| + | |
| − | ~# vppctl set interface state host-vpp1 up
| + | |
| − | | + | |
| − | Host interfaces are created with names like host-<linux-ifname>.
| + | |
| − | | + | |
| − | ~# vppctl show interface
| + | |
| − | Name Idx State Counter Count
| + | |
| − | GigabitEthernet0/8/0 5 down
| + | |
| − | GigabitEthernet0/9/0 6 down
| + | |
| − | host-vpp0 7 up
| + | |
| − | host-vpp1 8 up rx packets 2
| + | |
| − | rx bytes 140
| + | |
| − | drops 2
| + | |
| − | local0 0 down
| + | |
| − | pg/stream-0 1 down
| + | |
| − | pg/stream-1 2 down
| + | |
| − | pg/stream-2 3 down
| + | |
| − | pg/stream-3 4 down
| + | |
| − | | + | |
| − | ~$ vppctl show hardware
| + | |
| − | Name Idx Link Hardware
| + | |
| − | GigabitEthernet0/8/0 5 down GigabitEthernet0/8/0
| + | |
| − | Ethernet address 08:00:27:1b:35:da
| + | |
| − | Intel 82540EM (e1000)
| + | |
| − | carrier up full duplex speed 1000 mtu 9216
| + | |
| − |
| + | |
| − | GigabitEthernet0/9/0 6 down GigabitEthernet0/9/0
| + | |
| − | Ethernet address 08:00:27:59:74:1a
| + | |
| − | Intel 82540EM (e1000)
| + | |
| − | carrier up full duplex speed 1000 mtu 9216
| + | |
| − |
| + | |
| − | host-vpp0 7 up host-vpp0
| + | |
| − | Ethernet address 02:fe:22:32:72:72
| + | |
| − | Linux PACKET socket interface
| + | |
| − | host-vpp1 8 up host-vpp1
| + | |
| − | Ethernet address 02:fe:17:f7:19:ae
| + | |
| − | Linux PACKET socket interface
| + | |
| − | [...]
| + | |
| − | | + | |
| − | === Give ns2 a tap interface ===
| + | |
| − | | + | |
| − | <code>tap connect</code> is used to create a tap interface. It can also be used to connect to an existing detached tap interface.
| + | |
| − | | + | |
| − | ~# vppctl tap connect tap0
| + | |
| − | ~# vppctl show int
| + | |
| − | [...]
| + | |
| − | tapcli-0 10 down drops 8
| + | |
| − | [...]
| + | |
| − | | + | |
| − | The tap interface is created in VPP's namespace (default one). We need to move it to ns2 and configure it.
| + | |
| − | | + | |
| − | ~# ip netns add ns2
| + | |
| − | ~# ip link set tap0 netns ns2
| + | |
| − | ~# ip netns exec ns2 ip link set lo up
| + | |
| − | ~# ip netns exec ns2 ip link set tap0 up
| + | |
| − | ~# ip netns exec ns2 ip addr add 10.0.1.1/24 dev tap0
| + | |
| − | ~# ip netns exec ns2 ip addr add 2001:1::1/64 dev tap0
| + | |
| − | | + | |
| − | Now we are good to go to configure VPP.
| + | |
| − | | + | |
| − | == Routing and Switching ==
| + | |
| − | | + | |
| − | This section will show how to configure our little virtual network with switching and routing.
| + | |
| − | | + | |
| − | === Switching ns0 and ns1 ===
| + | |
| − | | + | |
| − | In this section, we are going to switch ns0, ns1, and VPP within a common bridging domain.
| + | |
| − | | + | |
| − | ~# vppctl set interface l2 bridge host-vpp0 1
| + | |
| − | ~# vppctl set interface l2 bridge host-vpp1 1
| + | |
| − | | + | |
| − | The two interfaces are now bridged !
| + | |
| − | Let's try and see packets coming in and out by using VPP's tracing.
| + | |
| − | | + | |
| − | ~# vppctl trace add af-packet-input 8
| + | |
| − | ~# ip netns exec ns0 ping6 2001::2
| + | |
| − | ~# vppctl show trace
| + | |
| − | Packet 1
| + | |
| − |
| + | |
| − | 00:08:21:483138: af-packet-input
| + | |
| − | af_packet: hw_if_index 7 next-index 1
| + | |
| − | tpacket2_hdr:
| + | |
| − | status 0x20000001 len 86 snaplen 86 mac 66 net 80
| + | |
| − | sec 0x5729ffe1 nsec 0xee2cbd5 vlan_tci 0
| + | |
| − | 00:08:21:484336: ethernet-input
| + | |
| − | IP6: 3e:ad:9f:23:9f:66 -> 33:33:ff:00:00:02
| + | |
| − | 00:08:21:484350: l2-input
| + | |
| − | l2-input: sw_if_index 7 dst 33:33:ff:00:00:02 src 3e:ad:9f:23:9f:66
| + | |
| − | 00:08:21:484353: l2-learn
| + | |
| − | l2-learn: sw_if_index 7 dst 33:33:ff:00:00:02 src 3e:ad:9f:23:9f:66 bd_index 1
| + | |
| − | 00:08:21:484748: l2-flood
| + | |
| − | l2-flood: sw_if_index 7 dst 33:33:ff:00:00:02 src 3e:ad:9f:23:9f:66 bd_index 1
| + | |
| − | 00:08:21:485086: l2-output
| + | |
| − | l2-output: sw_if_index 8 dst 33:33:ff:00:00:02 src 3e:ad:9f:23:9f:66
| + | |
| − | 00:08:21:485105: host-vpp1-output
| + | |
| − | host-vpp1
| + | |
| − | IP6: 3e:ad:9f:23:9f:66 -> 33:33:ff:00:00:02
| + | |
| − | ICMP6: 2001::1 -> ff02::1:ff00:2
| + | |
| − | tos 0x00, flow label 0x0, hop limit 255, payload length 32
| + | |
| − | ICMP neighbor_solicitation checksum 0xbc60
| + | |
| − | target address 2001::2
| + | |
| − |
| + | |
| − | Packet 2
| + | |
| − |
| + | |
| − | 00:08:21:485533: af-packet-input
| + | |
| − | af_packet: hw_if_index 8 next-index 1
| + | |
| − | tpacket2_hdr:
| + | |
| − | status 0x20000001 len 86 snaplen 86 mac 66 net 80
| + | |
| − | sec 0x5729ffe1 nsec 0xf07ee19 vlan_tci 0
| + | |
| − | 00:08:21:485536: ethernet-input
| + | |
| − | IP6: 9a:90:35:8a:b4:7f -> 3e:ad:9f:23:9f:66
| + | |
| − | 00:08:21:485538: l2-input
| + | |
| − | l2-input: sw_if_index 8 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f
| + | |
| − | 00:08:21:485540: l2-learn
| + | |
| − | l2-learn: sw_if_index 8 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f bd_index 1
| + | |
| − | 00:08:21:485542: l2-fwd
| + | |
| − | l2-fwd: sw_if_index 8 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f bd_index 1
| + | |
| − | 00:08:21:485544: l2-output
| + | |
| − | l2-output: sw_if_index 7 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f
| + | |
| − | 00:08:21:485554: host-vpp0-output
| + | |
| − | host-vpp0
| + | |
| − | IP6: 9a:90:35:8a:b4:7f -> 3e:ad:9f:23:9f:66
| + | |
| − | ICMP6: 2001::2 -> 2001::1
| + | |
| − | tos 0x00, flow label 0x0, hop limit 255, payload length 32
| + | |
| − | ICMP neighbor_advertisement checksum 0x3101
| + | |
| − | target address 2001::2
| + | |
| − |
| + | |
| − | Packet 3
| + | |
| − |
| + | |
| − | 00:08:21:485573: af-packet-input
| + | |
| − | af_packet: hw_if_index 7 next-index 1
| + | |
| − | tpacket2_hdr:
| + | |
| − | status 0x20000001 len 118 snaplen 118 mac 66 net 80
| + | |
| − | sec 0x5729ffe1 nsec 0xf08a8c5 vlan_tci 0
| + | |
| − | 00:08:21:485574: ethernet-input
| + | |
| − | IP6: 3e:ad:9f:23:9f:66 -> 9a:90:35:8a:b4:7f
| + | |
| − | 00:08:21:485575: l2-input
| + | |
| − | l2-input: sw_if_index 7 dst 9a:90:35:8a:b4:7f src 3e:ad:9f:23:9f:66
| + | |
| − | 00:08:21:485575: l2-learn
| + | |
| − | l2-learn: sw_if_index 7 dst 9a:90:35:8a:b4:7f src 3e:ad:9f:23:9f:66 bd_index 1
| + | |
| − | 00:08:21:485576: l2-fwd
| + | |
| − | l2-fwd: sw_if_index 7 dst 9a:90:35:8a:b4:7f src 3e:ad:9f:23:9f:66 bd_index 1
| + | |
| − | 00:08:21:485576: l2-output
| + | |
| − | l2-output: sw_if_index 8 dst 9a:90:35:8a:b4:7f src 3e:ad:9f:23:9f:66
| + | |
| − | 00:08:21:485577: host-vpp1-output
| + | |
| − | host-vpp1
| + | |
| − | IP6: 3e:ad:9f:23:9f:66 -> 9a:90:35:8a:b4:7f
| + | |
| − | ICMP6: 2001::1 -> 2001::2
| + | |
| − | tos 0x00, flow label 0x0, hop limit 64, payload length 64
| + | |
| − | ICMP echo_request checksum 0xd538
| + | |
| − |
| + | |
| − | Packet 4
| + | |
| − |
| + | |
| − | 00:08:21:485589: af-packet-input
| + | |
| − | af_packet: hw_if_index 8 next-index 1
| + | |
| − | tpacket2_hdr:
| + | |
| − | status 0x20000001 len 118 snaplen 118 mac 66 net 80
| + | |
| − | sec 0x5729ffe1 nsec 0xf08efa8 vlan_tci 0
| + | |
| − | 00:08:21:485590: ethernet-input
| + | |
| − | IP6: 9a:90:35:8a:b4:7f -> 3e:ad:9f:23:9f:66
| + | |
| − | 00:08:21:485591: l2-input
| + | |
| − | l2-input: sw_if_index 8 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f
| + | |
| − | 00:08:21:485591: l2-learn
| + | |
| − | l2-learn: sw_if_index 8 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f bd_index 1
| + | |
| − | 00:08:21:485592: l2-fwd
| + | |
| − | l2-fwd: sw_if_index 8 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f bd_index 1
| + | |
| − | 00:08:21:485592: l2-output
| + | |
| − | l2-output: sw_if_index 7 dst 3e:ad:9f:23:9f:66 src 9a:90:35:8a:b4:7f
| + | |
| − | 00:08:21:485592: host-vpp0-output
| + | |
| − | host-vpp0
| + | |
| − | IP6: 9a:90:35:8a:b4:7f -> 3e:ad:9f:23:9f:66
| + | |
| − | ICMP6: 2001::2 -> 2001::1
| + | |
| − | tos 0x00, flow label 0x0, hop limit 64, payload length 64
| + | |
| − | ICMP echo_reply checksum 0xd438
| + | |
| − | ~# vppctl clear trace
| + | |
| − | | + | |
| − | You should be able to see NDP packets followed by echo requests and responses.
| + | |
| − | | + | |
| − | The two namespaces are connected but VPP is not. Let's change that by adding a loopback interface to the bridge domain.
| + | |
| − | | + | |
| − | ~# vppctl create loopback interface
| + | |
| − | ~# vppctl show interface
| + | |
| − | Name Idx State Counter Count
| + | |
| − | [...]
| + | |
| − | loop0 10 down
| + | |
| − | [...]
| + | |
| − | | + | |
| − | The additional bvi option means that this interface is used to send, receive and forward packets for this bridge domain.
| + | |
| − | | + | |
| − | ~# vppctl set interface l2 bridge loop0 1 bvi
| + | |
| − | ~# vppctl set interface state loop0 up
| + | |
| − | | + | |
| − | Now let's take a look at current bridging state.
| + | |
| − | | + | |
| − | ~# vppctl show bridge-domain
| + | |
| − | ID Index Learning U-Forwrd UU-Flood Flooding ARP-Term BVI-Intf
| + | |
| − | 0 0 off off off off off local0
| + | |
| − | 1 1 on on on on off loop0
| + | |
| − | ~# vppctl show bridge-domain 1 detail
| + | |
| − | ID Index Learning U-Forwrd UU-Flood Flooding ARP-Term BVI-Intf
| + | |
| − | 1 1 on on on on off loop0
| + | |
| − | | + | |
| − | Interface Index SHG BVI VLAN-Tag-Rewrite
| + | |
| − | loop0 10 0 * none
| + | |
| − | host-vpp1 8 0 - none
| + | |
| − | host-vpp0 7 0 - none
| + | |
| − | | + | |
| − | And configure IP addresses on the loopback interface.
| + | |
| − | | + | |
| − | ~# vppctl set interface ip address loop0 2001::ffff/64
| + | |
| − | ~# vppctl set interface ip address loop0 10.0.0.10/24
| + | |
| − | | + | |
| − | VPP is now plugged to the bridge and configured. You should be able to ping VPP.
| + | |
| − | | + | |
| − | ~# vppctl trace add af-packet-input 15
| + | |
| − | ~# ip netns exec ns0 ping6 2001::ffff
| + | |
| − | ~# ip netns exec ns0 ping 10.0.0.10
| + | |
| − | ~# vppctl show trace
| + | |
| − | ~# vppctl clear trace
| + | |
| − | | + | |
| − | The Layer 2 fib can also be displayed.
| + | |
| − | | + | |
| − | ~# vppctl show l2fib verbose
| + | |
| − | Mac Address BD Idx Interface Index static filter bvi refresh timestamp
| + | |
| − | 3e:ad:9f:23:9f:66 1 host-vpp0 7 0 0 0 0 0
| + | |
| − | de:ad:00:00:00:00 1 loop0 10 1 0 1 0 0
| + | |
| − | 9a:90:35:8a:b4:7f 1 host-vpp1 8 0 0 0 0 0
| + | |
| − | | + | |
| − | === Routing ===
| + | |
| − | | + | |
| − | Now that ns0 and ns1 are switched, let's configure the tap interface such that we can do routing between ns2 and ns0+ns1.
| + | |
| − | | + | |
| − | ~# vppctl set interface state tapcli-0 up
| + | |
| − | ~# vppctl set interface ip address tapcli-0 2001:1::ffff/64
| + | |
| − | ~# vppctl set interface ip address tapcli-0 10.0.1.10/24
| + | |
| − | | + | |
| − | We can take a look at IP routing tables.
| + | |
| − | | + | |
| − | ~# vppctl show ip fib
| + | |
| − | ipv4-VRF:0, fib_index:0, flow hash:[src dst sport dport proto ] locks:[src:adjacency:1, src:default-route:1, ]
| + | |
| − | 0.0.0.0/0
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:1 buckets:1 uRPF:0 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 0.0.0.0/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:2 buckets:1 uRPF:1 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 10.0.0.0/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:13 buckets:1 uRPF:12 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 10.0.0.1/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:17 buckets:1 uRPF:17 to:[0:0] via:[2:168]]
| + | |
| − | [0] [@5]: ipv4 via 10.0.0.1 loop0: fad53695c3e5dead000000000800
| + | |
| − | 10.0.0.0/24
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:12 buckets:1 uRPF:11 to:[0:0]]
| + | |
| − | [0] [@4]: ipv4-glean: loop0
| + | |
| − | 10.0.0.10/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:15 buckets:1 uRPF:16 to:[2:168]]
| + | |
| − | [0] [@2]: dpo-receive: 10.0.0.10 on loop0
| + | |
| − | 10.0.0.255/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:14 buckets:1 uRPF:14 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 10.0.1.0/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:22 buckets:1 uRPF:23 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 10.0.1.0/24
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:21 buckets:1 uRPF:22 to:[0:0]]
| + | |
| − | [0] [@4]: ipv4-glean: tapcli-0
| + | |
| − | 10.0.1.10/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:24 buckets:1 uRPF:27 to:[0:0]]
| + | |
| − | [0] [@2]: dpo-receive: 10.0.1.10 on tapcli-0
| + | |
| − | 10.0.1.255/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:23 buckets:1 uRPF:25 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 224.0.0.0/4
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:4 buckets:1 uRPF:3 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 240.0.0.0/4
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:3 buckets:1 uRPF:2 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | 255.255.255.255/32
| + | |
| − | unicast-ip4-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip4 index:5 buckets:1 uRPF:4 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip4
| + | |
| − | | + | |
| − | | + | |
| − | ~# vppctl show ip6 fib
| + | |
| − | ipv6-VRF:0, fib_index:0, flow hash:[src dst sport dport proto ] locks:[src:default-route:1, ]
| + | |
| − | ::/0
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:6 buckets:1 uRPF:5 to:[0:0]]
| + | |
| − | [0] [@0]: dpo-drop ip6
| + | |
| − | 2001::1/128
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:16 buckets:1 uRPF:15 to:[2:208]]
| + | |
| − | [0] [@5]: ipv6 via 2001::1 loop0: fad53695c3e5dead0000000086dd
| + | |
| − | 2001::/64
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:9 buckets:1 uRPF:8 to:[0:0]]
| + | |
| − | [0] [@4]: ipv6-glean: loop0
| + | |
| − | 2001::ffff/128
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:10 buckets:1 uRPF:9 to:[2:208]]
| + | |
| − | [0] [@2]: dpo-receive: 2001::ffff on loop0
| + | |
| − | 2001:1::/64
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:18 buckets:1 uRPF:19 to:[0:0]]
| + | |
| − | [0] [@4]: ipv6-glean: tapcli-0
| + | |
| − | 2001:1::ffff/128
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:19 buckets:1 uRPF:20 to:[0:0]]
| + | |
| − | [0] [@2]: dpo-receive: 2001:1::ffff on tapcli-0
| + | |
| − | fe80::/10
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:7 buckets:1 uRPF:6 to:[0:0]]
| + | |
| − | [0] [@2]: dpo-receive
| + | |
| − | fe80::fe:7fff:fefe:b1ce/128
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:20 buckets:1 uRPF:21 to:[0:0]]
| + | |
| − | [0] [@2]: dpo-receive: fe80::fe:7fff:fefe:b1ce on tapcli-0
| + | |
| − | fe80::dcad:ff:fe00:0/128
| + | |
| − | unicast-ip6-chain
| + | |
| − | [@0]: dpo-load-balance: [proto:ip6 index:11 buckets:1 uRPF:10 to:[0:0]]
| + | |
| − | [0] [@2]: dpo-receive: fe80::dcad:ff:fe00:0 on loop0
| + | |
| − | | + | |
| − | On VPP side, we are good to go. But we just need to setup default routes in every namespaces.
| + | |
| − | Depending on your linux configuration, IPv6 routes may already exist as VPP automatically sends IPv6 router advertisements.
| + | |
| − | | + | |
| − | ~# ip netns exec ns0 ip route add default via 10.0.0.10
| + | |
| − | ~# ip netns exec ns0 ip -6 route add default via 2001::ffff
| + | |
| − | ~# ip netns exec ns1 ip route add default via 10.0.0.10
| + | |
| − | ~# ip netns exec ns1 ip -6 route add default via 2001::ffff
| + | |
| − | ~# ip netns exec ns2 ip route add default via 10.0.1.10
| + | |
| − | ~# ip netns exec ns2 ip -6 route add default via 2001:1::ffff
| + | |
| − | | + | |
| − | And now we can ping through VPP forwarding engine.
| + | |
| − | | + | |
| − | ~# vppctl trace add af-packet-input 15
| + | |
| − | ~# ip netns exec ns0 ping6 2001:1::1
| + | |
| − | ~# ip netns exec ns0 ping 10.0.1.1
| + | |
| − | ~# vppctl show trace
| + | |
| − | ~# vppctl clear trace
| + | |
| − | | + | |
| − | == Cleaning up ==
| + | |
| − | | + | |
| − | In order to cleanup this hands-on:
| + | |
| − | | + | |
| − | ~# ip netns del ns0
| + | |
| − | ~# ip netns del ns1
| + | |
| − | ~# ip netns del ns2
| + | |
| − | ~# ip link del vpp0
| + | |
| − | ~# ip link del vpp1
| + | |
| − | ~# ip link del tap0
| + | |
