• vxlan_symmetric.sh


    #!/bin/bash
    # SPDX-License-Identifier: GPL-2.0
    
    # +---------------------------+                +------------------------------+
    # |                    vrf-h1 |                |                       vrf-h2 |
    # |    + $h1                  |                |    + $h2                     |
    # |    | 10.1.1.101/24        |                |    | 10.1.2.101/24           |
    # |    | default via 10.1.1.1 |                |    | default via 10.1.2.1    |
    # +----|----------------------+                +----|-------------------------+
    #      |                                            |
    # +----|--------------------------------------------|-------------------------+
    # | SW |                                            |                         |
    # | +--|--------------------------------------------|-----------------------+ |
    # | |  + $swp1                         br1          + $swp2                 | |
    # | |     vid 10 pvid untagged                         vid 20 pvid untagged | |
    # | |                                                                       | |
    # | |  + vx10                                       + vx20                  | |
    # | |    local 10.0.0.1                               local 10.0.0.1        | |
    # | |    remote 10.0.0.2                              remote 10.0.0.2       | |
    # | |    id 1010                                      id 1020               | |
    # | |    dstport 4789                                 dstport 4789          | |
    # | |    vid 10 pvid untagged                         vid 20 pvid untagged  | |
    # | |                                                                       | |
    # | |                             + vx4001                                  | |
    # | |                               local 10.0.0.1                          | |
    # | |                               remote 10.0.0.2                         | |
    # | |                               id 104001                               | |
    # | |                               dstport 4789                            | |
    # | |                               vid 4001 pvid untagged                  | |
    # | |                                                                       | |
    # | +-----------------------------------+-----------------------------------+ |
    # |                                     |                                     |
    # | +-----------------------------------|-----------------------------------+ |
    # | |                                   |                                   | |
    # | |  +--------------------------------+--------------------------------+  | |
    # | |  |                                |                                |  | |
    # | |  + vlan10                         |                         vlan20 +  | |
    # | |  | 10.1.1.11/24                   |                   10.1.2.11/24 |  | |
    # | |  |                                |                                |  | |
    # | |  + vlan10-v (macvlan)             +             vlan20-v (macvlan) +  | |
    # | |    10.1.1.1/24                vlan4001                 10.1.2.1/24    | |
    # | |    00:00:5e:00:01:01                             00:00:5e:00:01:01    | |
    # | |                               vrf-green                               | |
    # | +-----------------------------------------------------------------------+ |
    # |                                                                           |
    # |    + $rp1                                       +lo                       |
    # |    | 192.0.2.1/24                                10.0.0.1/32              |
    # +----|----------------------------------------------------------------------+
    #      |
    # +----|--------------------------------------------------------+
    # |    |                            vrf-spine                   |
    # |    + $rp2                                                   |
    # |      192.0.2.2/24                                           |
    # |                                                             |   (maybe) HW
    # =============================================================================
    # |                                                             |  (likely) SW
    # |                                                             |
    # |    + v1 (veth)                                              |
    # |    | 192.0.3.2/24                                           |
    # +----|--------------------------------------------------------+
    #      |
    # +----|----------------------------------------------------------------------+
    # |    + v2 (veth)                                  +lo           NS1 (netns) |
    # |      192.0.3.1/24                                10.0.0.2/32              |
    # |                                                                           |
    # | +-----------------------------------------------------------------------+ |
    # | |                               vrf-green                               | |
    # | |  + vlan10-v (macvlan)                           vlan20-v (macvlan) +  | |
    # | |  | 10.1.1.1/24                                         10.1.2.1/24 |  | |
    # | |  | 00:00:5e:00:01:01                             00:00:5e:00:01:01 |  | |
    # | |  |                            vlan4001                             |  | |
    # | |  + vlan10                         +                         vlan20 +  | |
    # | |  | 10.1.1.12/24                   |                   10.1.2.12/24 |  | |
    # | |  |                                |                                |  | |
    # | |  +--------------------------------+--------------------------------+  | |
    # | |                                   |                                   | |
    # | +-----------------------------------|-----------------------------------+ |
    # |                                     |                                     |
    # | +-----------------------------------+-----------------------------------+ |
    # | |                                                                       | |
    # | |  + vx10                                     + vx20                    | |
    # | |    local 10.0.0.2                             local 10.0.0.2          | |
    # | |    remote 10.0.0.1                            remote 10.0.0.1         | |
    # | |    id 1010                                    id 1020                 | |
    # | |    dstport 4789                               dstport 4789            | |
    # | |    vid 10 pvid untagged                       vid 20 pvid untagged    | |
    # | |                                                                       | |
    # | |                             + vx4001                                  | |
    # | |                               local 10.0.0.2                          | |
    # | |                               remote 10.0.0.1                         | |
    # | |                               id 104001                               | |
    # | |                               dstport 4789                            | |
    # | |                               vid 4001 pvid untagged                  | |
    # | |                                                                       | |
    # | |  + w1 (veth)                                + w3 (veth)               | |
    # | |  | vid 10 pvid untagged          br1        | vid 20 pvid untagged    | |
    # | +--|------------------------------------------|-------------------------+ |
    # |    |                                          |                           |
    # |    |                                          |                           |
    # | +--|----------------------+                +--|-------------------------+ |
    # | |  |               vrf-h1 |                |  |                  vrf-h2 | |
    # | |  + w2 (veth)            |                |  + w4 (veth)               | |
    # | |    10.1.1.102/24        |                |    10.1.2.102/24           | |
    # | |    default via 10.1.1.1 |                |    default via 10.1.2.1    | |
    # | +-------------------------+                +----------------------------+ |
    # +---------------------------------------------------------------------------+
    
    ALL_TESTS="
        ping_ipv4
    "
    NUM_NETIFS=6
    source lib.sh
    
    hx_create()
    {
        local vrf_name=$1; shift
        local if_name=$1; shift
        local ip_addr=$1; shift
        local gw_ip=$1; shift
    
        vrf_create $vrf_name
        ip link set dev $if_name master $vrf_name
        ip link set dev $vrf_name up
        ip link set dev $if_name up
    
        ip address add $ip_addr/24 dev $if_name
        ip neigh replace $gw_ip lladdr 00:00:5e:00:01:01 nud permanent 
            dev $if_name
        ip route add default vrf $vrf_name nexthop via $gw_ip
    }
    export -f hx_create
    
    hx_destroy()
    {
        local vrf_name=$1; shift
        local if_name=$1; shift
        local ip_addr=$1; shift
        local gw_ip=$1; shift
    
        ip route del default vrf $vrf_name nexthop via $gw_ip
        ip neigh del $gw_ip dev $if_name
        ip address del $ip_addr/24 dev $if_name
    
        ip link set dev $if_name down
        vrf_destroy $vrf_name
    }
    
    h1_create()
    {
        hx_create "vrf-h1" $h1 10.1.1.101 10.1.1.1
    }
    
    h1_destroy()
    {
        hx_destroy "vrf-h1" $h1 10.1.1.101 10.1.1.1
    }
    
    h2_create()
    {
        hx_create "vrf-h2" $h2 10.1.2.101 10.1.2.1
    }
    
    h2_destroy()
    {
        hx_destroy "vrf-h2" $h2 10.1.2.101 10.1.2.1
    }
    
    switch_create()
    {
        ip link add name br1 type bridge vlan_filtering 1 vlan_default_pvid 0 
            mcast_snooping 0
        # Make sure the bridge uses the MAC address of the local port and not
        # that of the VxLAN's device.
        ip link set dev br1 address $(mac_get $swp1)
        ip link set dev br1 up
    
        ip link set dev $rp1 up
        ip address add dev $rp1 192.0.2.1/24
        ip route add 10.0.0.2/32 nexthop via 192.0.2.2
    
        ip link add name vx10 type vxlan id 1010        
            local 10.0.0.1 remote 10.0.0.2 dstport 4789    
            nolearning noudpcsum tos inherit ttl 100
        ip link set dev vx10 up
    
        ip link set dev vx10 master br1
        bridge vlan add vid 10 dev vx10 pvid untagged
    
        ip link add name vx20 type vxlan id 1020        
            local 10.0.0.1 remote 10.0.0.2 dstport 4789    
            nolearning noudpcsum tos inherit ttl 100
        ip link set dev vx20 up
    
        ip link set dev vx20 master br1
        bridge vlan add vid 20 dev vx20 pvid untagged
    
        ip link set dev $swp1 master br1
        ip link set dev $swp1 up
        bridge vlan add vid 10 dev $swp1 pvid untagged
    
        ip link set dev $swp2 master br1
        ip link set dev $swp2 up
        bridge vlan add vid 20 dev $swp2 pvid untagged
    
        ip link add name vx4001 type vxlan id 104001        
            local 10.0.0.1 dstport 4789            
            nolearning noudpcsum tos inherit ttl 100
        ip link set dev vx4001 up
    
        ip link set dev vx4001 master br1
        bridge vlan add vid 4001 dev vx4001 pvid untagged
    
        ip address add 10.0.0.1/32 dev lo
    
        # Create SVIs
        vrf_create "vrf-green"
        ip link set dev vrf-green up
    
        ip link add link br1 name vlan10 up master vrf-green type vlan id 10
        ip address add 10.1.1.11/24 dev vlan10
        ip link add link vlan10 name vlan10-v up master vrf-green 
            address 00:00:5e:00:01:01 type macvlan mode private
        ip address add 10.1.1.1/24 dev vlan10-v
    
        ip link add link br1 name vlan20 up master vrf-green type vlan id 20
        ip address add 10.1.2.11/24 dev vlan20
        ip link add link vlan20 name vlan20-v up master vrf-green 
            address 00:00:5e:00:01:01 type macvlan mode private
        ip address add 10.1.2.1/24 dev vlan20-v
    
        ip link add link br1 name vlan4001 up master vrf-green 
            type vlan id 4001
    
        bridge vlan add vid 10 dev br1 self
        bridge vlan add vid 20 dev br1 self
        bridge vlan add vid 4001 dev br1 self
    
        bridge fdb add 00:00:5e:00:01:01 dev br1 self local vlan 10
        bridge fdb add 00:00:5e:00:01:01 dev br1 self local vlan 20
    }
    
    switch_destroy()
    {
        bridge fdb del 00:00:5e:00:01:01 dev br1 self local vlan 20
        bridge fdb del 00:00:5e:00:01:01 dev br1 self local vlan 10
    
        bridge vlan del vid 4001 dev br1 self
        bridge vlan del vid 20 dev br1 self
        bridge vlan del vid 10 dev br1 self
    
        ip link del dev vlan4001
    
        ip link del dev vlan20
    
        ip link del dev vlan10
    
        vrf_destroy "vrf-green"
    
        ip address del 10.0.0.1/32 dev lo
    
        bridge vlan del vid 20 dev $swp2
        ip link set dev $swp2 down
        ip link set dev $swp2 nomaster
    
        bridge vlan del vid 10 dev $swp1
        ip link set dev $swp1 down
        ip link set dev $swp1 nomaster
    
        bridge vlan del vid 4001 dev vx4001
        ip link set dev vx4001 nomaster
    
        ip link set dev vx4001 down
        ip link del dev vx4001
    
        bridge vlan del vid 20 dev vx20
        ip link set dev vx20 nomaster
    
        ip link set dev vx20 down
        ip link del dev vx20
    
        bridge vlan del vid 10 dev vx10
        ip link set dev vx10 nomaster
    
        ip link set dev vx10 down
        ip link del dev vx10
    
        ip route del 10.0.0.2/32 nexthop via 192.0.2.2
        ip address del dev $rp1 192.0.2.1/24
        ip link set dev $rp1 down
    
        ip link set dev br1 down
        ip link del dev br1
    }
    
    spine_create()
    {
        vrf_create "vrf-spine"
        ip link set dev $rp2 master vrf-spine
        ip link set dev v1 master vrf-spine
        ip link set dev vrf-spine up
        ip link set dev $rp2 up
        ip link set dev v1 up
    
        ip address add 192.0.2.2/24 dev $rp2
        ip address add 192.0.3.2/24 dev v1
    
        ip route add 10.0.0.1/32 vrf vrf-spine nexthop via 192.0.2.1
        ip route add 10.0.0.2/32 vrf vrf-spine nexthop via 192.0.3.1
    }
    
    spine_destroy()
    {
        ip route del 10.0.0.2/32 vrf vrf-spine nexthop via 192.0.3.1
        ip route del 10.0.0.1/32 vrf vrf-spine nexthop via 192.0.2.1
    
        ip address del 192.0.3.2/24 dev v1
        ip address del 192.0.2.2/24 dev $rp2
    
        ip link set dev v1 down
        ip link set dev $rp2 down
        vrf_destroy "vrf-spine"
    }
    
    ns_h1_create()
    {
        hx_create "vrf-h1" w2 10.1.1.102 10.1.1.1
    }
    export -f ns_h1_create
    
    ns_h2_create()
    {
        hx_create "vrf-h2" w4 10.1.2.102 10.1.2.1
    }
    export -f ns_h2_create
    
    ns_switch_create()
    {
        ip link add name br1 type bridge vlan_filtering 1 vlan_default_pvid 0 
            mcast_snooping 0
        ip link set dev br1 up
    
        ip link set dev v2 up
        ip address add dev v2 192.0.3.1/24
        ip route add 10.0.0.1/32 nexthop via 192.0.3.2
    
        ip link add name vx10 type vxlan id 1010        
            local 10.0.0.2 remote 10.0.0.1 dstport 4789    
            nolearning noudpcsum tos inherit ttl 100
        ip link set dev vx10 up
    
        ip link set dev vx10 master br1
        bridge vlan add vid 10 dev vx10 pvid untagged
    
        ip link add name vx20 type vxlan id 1020        
            local 10.0.0.2 remote 10.0.0.1 dstport 4789    
            nolearning noudpcsum tos inherit ttl 100
        ip link set dev vx20 up
    
        ip link set dev vx20 master br1
        bridge vlan add vid 20 dev vx20 pvid untagged
    
        ip link add name vx4001 type vxlan id 104001        
            local 10.0.0.2 dstport 4789            
            nolearning noudpcsum tos inherit ttl 100
        ip link set dev vx4001 up
    
        ip link set dev vx4001 master br1
        bridge vlan add vid 4001 dev vx4001 pvid untagged
    
        ip link set dev w1 master br1
        ip link set dev w1 up
        bridge vlan add vid 10 dev w1 pvid untagged
    
        ip link set dev w3 master br1
        ip link set dev w3 up
        bridge vlan add vid 20 dev w3 pvid untagged
    
        ip address add 10.0.0.2/32 dev lo
    
        # Create SVIs
        vrf_create "vrf-green"
        ip link set dev vrf-green up
    
        ip link add link br1 name vlan10 up master vrf-green type vlan id 10
        ip address add 10.1.1.12/24 dev vlan10
        ip link add link vlan10 name vlan10-v up master vrf-green 
            address 00:00:5e:00:01:01 type macvlan mode private
        ip address add 10.1.1.1/24 dev vlan10-v
    
        ip link add link br1 name vlan20 up master vrf-green type vlan id 20
        ip address add 10.1.2.12/24 dev vlan20
        ip link add link vlan20 name vlan20-v up master vrf-green 
            address 00:00:5e:00:01:01 type macvlan mode private
        ip address add 10.1.2.1/24 dev vlan20-v
    
        ip link add link br1 name vlan4001 up master vrf-green 
            type vlan id 4001
    
        bridge vlan add vid 10 dev br1 self
        bridge vlan add vid 20 dev br1 self
        bridge vlan add vid 4001 dev br1 self
    
        bridge fdb add 00:00:5e:00:01:01 dev br1 self local vlan 10
        bridge fdb add 00:00:5e:00:01:01 dev br1 self local vlan 20
    }
    export -f ns_switch_create
    
    ns_init()
    {
        ip link add name w1 type veth peer name w2
        ip link add name w3 type veth peer name w4
    
        ip link set dev lo up
    
        ns_h1_create
        ns_h2_create
        ns_switch_create
    }
    export -f ns_init
    
    ns1_create()
    {
        ip netns add ns1
        ip link set dev v2 netns ns1
        in_ns ns1 ns_init
    }
    
    ns1_destroy()
    {
        ip netns exec ns1 ip link set dev v2 netns 1
        ip netns del ns1
    }
    
    __l2_vni_init()
    {
        local mac1=$1; shift
        local mac2=$1; shift
        local ip1=$1; shift
        local ip2=$1; shift
        local dst=$1; shift
    
        bridge fdb add $mac1 dev vx10 self master extern_learn static 
            dst $dst vlan 10
        bridge fdb add $mac2 dev vx20 self master extern_learn static 
            dst $dst vlan 20
    
        ip neigh add $ip1 lladdr $mac1 nud noarp dev vlan10 
            extern_learn
        ip neigh add $ip2 lladdr $mac2 nud noarp dev vlan20 
            extern_learn
    }
    export -f __l2_vni_init
    
    l2_vni_init()
    {
        local h1_ns_mac=$(in_ns ns1 mac_get w2)
        local h2_ns_mac=$(in_ns ns1 mac_get w4)
        local h1_mac=$(mac_get $h1)
        local h2_mac=$(mac_get $h2)
    
        __l2_vni_init $h1_ns_mac $h2_ns_mac 10.1.1.102 10.1.2.102 10.0.0.2
        in_ns ns1 __l2_vni_init $h1_mac $h2_mac 10.1.1.101 10.1.2.101 10.0.0.1
    }
    
    __l3_vni_init()
    {
        local mac=$1; shift
        local vtep_ip=$1; shift
        local host1_ip=$1; shift
        local host2_ip=$1; shift
    
        bridge fdb add $mac dev vx4001 self master extern_learn static 
            dst $vtep_ip vlan 4001
    
        ip neigh add $vtep_ip lladdr $mac nud noarp dev vlan4001 extern_learn
    
        ip route add $host1_ip/32 vrf vrf-green nexthop via $vtep_ip 
            dev vlan4001 onlink
        ip route add $host2_ip/32 vrf vrf-green nexthop via $vtep_ip 
            dev vlan4001 onlink
    }
    export -f __l3_vni_init
    
    l3_vni_init()
    {
        local vlan4001_ns_mac=$(in_ns ns1 mac_get vlan4001)
        local vlan4001_mac=$(mac_get vlan4001)
    
        __l3_vni_init $vlan4001_ns_mac 10.0.0.2 10.1.1.102 10.1.2.102
        in_ns ns1 __l3_vni_init $vlan4001_mac 10.0.0.1 10.1.1.101 10.1.2.101
    }
    
    setup_prepare()
    {
        h1=${NETIFS[p1]}
        swp1=${NETIFS[p2]}
    
        swp2=${NETIFS[p3]}
        h2=${NETIFS[p4]}
    
        rp1=${NETIFS[p5]}
        rp2=${NETIFS[p6]}
    
        vrf_prepare
        forwarding_enable
    
        h1_create
        h2_create
        switch_create
    
        ip link add name v1 type veth peer name v2
        spine_create
        ns1_create
    
        l2_vni_init
        l3_vni_init
    }
    
    cleanup()
    {
        pre_cleanup
    
        ns1_destroy
        spine_destroy
        ip link del dev v1
    
        switch_destroy
        h2_destroy
        h1_destroy
    
        forwarding_restore
        vrf_cleanup
    }
    
    ping_ipv4()
    {
        ping_test $h1 10.1.2.101 ": local->local vid 10->vid 20"
        ping_test $h1 10.1.1.102 ": local->remote vid 10->vid 10"
        ping_test $h2 10.1.2.102 ": local->remote vid 20->vid 20"
        ping_test $h1 10.1.2.102 ": local->remote vid 10->vid 20"
        ping_test $h2 10.1.1.102 ": local->remote vid 20->vid 10"
    }
    
    trap cleanup EXIT
    
    setup_prepare
    setup_wait
    
    tests_run
    
    exit $EXIT_STATUS
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  • 原文地址:https://www.cnblogs.com/dream397/p/13212971.html
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