配置L3VPN迭代静态SR-MPLS TE Policy示例（基于Color引流）

操作步骤

1. 配置接口的IP地址。

   # 配置PE1。

   <HUAWEI> system-view

   [~HUAWEI] sysname PE1

   [*HUAWEI] commit

   [~PE1] interface loopback 1

   [*PE1-LoopBack1] ip address 1.1.1.9 32

   [*PE1-LoopBack1] quit

   [*PE1] interface gigabitethernet0/1/0

   [*PE1-GigabitEthernet0/1/0] ip address 10.13.1.1 24

   [*PE1-GigabitEthernet0/1/0] quit

   [*PE1] interface gigabitethernet0/3/0

   [*PE1-GigabitEthernet0/3/0] ip address 10.11.1.1 24

   [*PE1-GigabitEthernet0/3/0] quit

   [*PE1] commit

   # 配置P1。

   <HUAWEI> system-view

   [~HUAWEI] sysname P1

   [*HUAWEI] commit

   [~P1] interface loopback 1

   [*P1-LoopBack1] ip address 2.2.2.9 32

   [*P1-LoopBack1] quit

   [*P1] interface gigabitethernet0/1/0

   [*P1-GigabitEthernet0/1/0] ip address 10.11.1.2 24

   [*P1-GigabitEthernet0/1/0] quit

   [*P1] interface gigabitethernet0/2/0

   [*P1-GigabitEthernet0/2/0] ip address 10.12.1.1 24

   [*P1-GigabitEthernet0/2/0] quit

   [*P1] commit

   # 配置PE2。

   <HUAWEI> system-view

   [~HUAWEI] sysname PE2

   [*HUAWEI] commit

   [~PE2] interface loopback 1

   [*PE2-LoopBack1] ip address 3.3.3.9 32

   [*PE2-LoopBack1] quit

   [*PE2] interface gigabitethernet0/1/0

   [*PE2-GigabitEthernet0/1/0] ip address 10.14.1.2 24

   [*PE2-GigabitEthernet0/1/0] quit

   [*PE2] interface gigabitethernet0/3/0

   [*PE2-GigabitEthernet0/3/0] ip address 10.12.1.2 24

   [*PE2-GigabitEthernet0/3/0] quit

   [*PE2] commit

   # 配置P2。

   <HUAWEI> system-view

   [~HUAWEI] sysname P2

   [*HUAWEI] commit

   [~P2] interface loopback 1

   [*P2-LoopBack1] ip address 4.4.4.9 32

   [*P2-LoopBack1] quit

   [*P2] interface gigabitethernet0/1/0

   [*P2-GigabitEthernet0/1/0] ip address 10.13.1.2 24

   [*P2-GigabitEthernet0/1/0] quit

   [*P2] interface gigabitethernet0/2/0

   [*P2-GigabitEthernet0/2/0] ip address 10.14.1.1 24

   [*P2-GigabitEthernet0/2/0] quit

   [*P2] commit

2. 在骨干网上配置IGP协议，实现骨干网PE和P的互通。本例中以IS-IS为例进行说明。

   # 配置PE1。

   [~PE1] isis 1

   [*PE1-isis-1] is-level level-1

   [*PE1-isis-1] network-entity 10.0000.0000.0001.00

   [*PE1-isis-1] quit

   [*PE1] commit

   [*PE1] interface loopback 1

   [*PE1-LoopBack1] isis enable 1

   [*PE1-LoopBack1] quit

   [*PE1] interface gigabitethernet0/1/0

   [*PE1-GigabitEthernet0/1/0] isis enable 1

   [*PE1-GigabitEthernet0/1/0] quit

   [*PE1] interface gigabitethernet0/3/0

   [*PE1-GigabitEthernet0/3/0] isis enable 1

   [*PE1-GigabitEthernet0/3/0] quit

   [*PE1] commit

   # 配置P1。

   [~P1] isis 1

   [*P1-isis-1] is-level level-1

   [*P1-isis-1] network-entity 10.0000.0000.0002.00

   [*P1-isis-1] quit

   [*P1] commit

   [~P1] interface loopback 1

   [*P1-LoopBack1] isis enable 1

   [*P1-LoopBack1] quit

   [*P1] interface gigabitethernet0/1/0

   [*P1-GigabitEthernet0/1/0] isis enable 1

   [*P1-GigabitEthernet0/1/0] quit

   [*P1] interface gigabitethernet0/2/0

   [*P1-GigabitEthernet0/2/0] isis enable 1

   [*P1-GigabitEthernet0/2/0] quit

   [*P1] commit

   # 配置PE2。

   [~PE2] isis 1

   [*PE2-isis-1] is-level level-1

   [*PE2-isis-1] network-entity 10.0000.0000.0003.00

   [*PE2-isis-1] quit

   [*PE2] commit

   [~PE2] interface loopback 1

   [*PE2-LoopBack1] isis enable 1

   [*PE2-LoopBack1] quit

   [*PE2] interface gigabitethernet0/3/0

   [*PE2-GigabitEthernet0/3/0] isis enable 1

   [*PE2-GigabitEthernet0/3/0] quit

   [*PE2] interface gigabitethernet0/1/0

   [*PE2-GigabitEthernet0/1/0] isis enable 1

   [*PE2-GigabitEthernet0/1/0] quit

   [*PE2] commit

   # 配置P2。

   [~P2] isis 1

   [*P2-isis-1] is-level level-1

   [*P2-isis-1] network-entity 10.0000.0000.0004.00

   [*P2-isis-1] quit

   [*P2] commit

   [~P2] interface loopback 1

   [*P2-LoopBack1] isis enable 1

   [*P2-LoopBack1] quit

   [*P2] interface gigabitethernet0/1/0

   [*P2-GigabitEthernet0/1/0] isis enable 1

   [*P2-GigabitEthernet0/1/0] quit

   [*P2] interface gigabitethernet0/2/0

   [*P2-GigabitEthernet0/2/0] isis enable 1

   [*P2-GigabitEthernet0/2/0] quit

   [*P2] commit

3. 在骨干网上配置MPLS基本能力

   # 配置PE1。

   [~PE1] mpls lsr-id 1.1.1.9

   [*PE1] mpls

   [*PE1-mpls] commit

   [~PE1-mpls] quit

   # 配置P1。

   [~P1] mpls lsr-id 2.2.2.9

   [*P1] mpls

   [*P1-mpls] commit

   [~P1-mpls] quit

   # 配置PE2。

   [~PE2] mpls lsr-id 3.3.3.9

   [*PE2] mpls

   [*PE2-mpls] commit

   [~PE2-mpls] quit

   # 配置P2。

   [~P2] mpls lsr-id 4.4.4.9

   [*P2] mpls

   [*P2-mpls] commit

   [~P2-mpls] quit

4. 在骨干网上配置Segment Routing

   # 配置PE1。

   [~PE1] segment-routing

   [*PE1-segment-routing] ipv4 adjacency local-ip-addr 10.11.1.1 remote-ip-addr 10.11.1.2 sid 330000

   [*PE1-segment-routing] ipv4 adjacency local-ip-addr 10.13.1.1 remote-ip-addr 10.13.1.2 sid 330001

   [*PE1-segment-routing] quit

   [*PE1] commit

   [~PE1] isis 1

   [*PE1-isis-1] cost-style wide

   [*PE1-isis-1] segment-routing mpls

   [*PE1-isis-1] quit

   [*PE1] commit

   # 配置P1。

   [~P1] segment-routing

   [*P1-segment-routing] ipv4 adjacency local-ip-addr 10.11.1.2 remote-ip-addr 10.11.1.1 sid 330003

   [*P1-segment-routing] ipv4 adjacency local-ip-addr 10.12.1.1 remote-ip-addr 10.12.1.2 sid 330002

   [*P1-segment-routing] quit

   [*P1] commit

   [~P1] isis 1

   [*P1-isis-1] cost-style wide

   [*P1-isis-1] segment-routing mpls

   [*P1-isis-1] quit

   [*P1] commit

   # 配置PE2。

   [~PE2] segment-routing

   [*PE2-segment-routing] ipv4 adjacency local-ip-addr 10.12.1.2 remote-ip-addr 10.12.1.1 sid 330000

   [*PE2-segment-routing] ipv4 adjacency local-ip-addr 10.14.1.2 remote-ip-addr 10.14.1.1 sid 330001

   [*PE2-segment-routing] quit

   [*PE2] commit

   [~PE2] isis 1

   [*PE2-isis-1] cost-style wide

   [*PE2-isis-1] segment-routing mpls

   [*PE2-isis-1] quit

   [*PE2] commit

   # 配置P2。

   [~P2] segment-routing

   [*P2-segment-routing] ipv4 adjacency local-ip-addr 10.13.1.2 remote-ip-addr 10.13.1.1 sid 330002

   [*P2-segment-routing] ipv4 adjacency local-ip-addr 10.14.1.1 remote-ip-addr 10.14.1.2 sid 330003

   [*P2-segment-routing] quit

   [*P2] commit

   [~P2] isis 1

   [*P2-isis-1] cost-style wide

   [*P2-isis-1] segment-routing mpls

   [*P2-isis-1] quit

   [*P2] commit

5. 配置SR-MPLS TE Policy

   # 配置PE1。

   [~PE1] segment-routing

   [~PE1-segment-routing] segment-list pe1

   [*PE1-segment-routing-segment-list] index 10 sid label 330000

   [*PE1-segment-routing-segment-list] index 20 sid label 330002

   [*PE1-segment-routing-segment-list] quit

   [*PE1-segment-routing] segment-list pe1backup

   [*PE1-segment-routing-segment-list] index 10 sid label 330001

   [*PE1-segment-routing-segment-list] index 20 sid label 330003

   [*PE1-segment-routing-segment-list] quit

   [*PE1-segment-routing] sr-te policy policy100 endpoint 3.3.3.9 color 100

   [*PE1-segment-routing-te-policy] binding-sid 115

   [*PE1-segment-routing-te-policy] mtu 1000

   [*PE1-segment-routing-te-policy] candidate-path preference 100

   [*PE1-segment-routing-te-policy-path] segment-list pe1backup

   [*PE1-segment-routing-te-policy-path] quit

   [*PE1-segment-routing-te-policy] candidate-path preference 200

   [*PE1-segment-routing-te-policy-path] segment-list pe1

   [*PE1-segment-routing-te-policy-path] quit

   [*PE1-segment-routing-te-policy] quit

   [*PE1-segment-routing] quit

   [*PE1] commit

   # 配置PE2。

   [~PE2] segment-routing

   [~PE2-segment-routing] segment-list pe2

   [*PE2-segment-routing-segment-list] index 10 sid label 330000

   [*PE2-segment-routing-segment-list] index 20 sid label 330003

   [*PE2-segment-routing-segment-list] quit

   [*PE2-segment-routing] segment-list pe2backup

   [*PE2-segment-routing-segment-list] index 10 sid label 330001

   [*PE2-segment-routing-segment-list] index 20 sid label 330002

   [*PE2-segment-routing-segment-list] quit

   [*PE2-segment-routing] sr-te policy policy200 endpoint 1.1.1.9 color 200

   [*PE2-segment-routing-te-policy] binding-sid 115

   [*PE2-segment-routing-te-policy] mtu 1000

   [*PE2-segment-routing-te-policy] candidate-path preference 100

   [*PE2-segment-routing-te-policy-path] segment-list pe2backup

   [*PE2-segment-routing-te-policy-path] quit

   [*PE2-segment-routing-te-policy] candidate-path preference 200

   [*PE2-segment-routing-te-policy-path] segment-list pe2

   [*PE2-segment-routing-te-policy-path] quit

   [*PE2-segment-routing-te-policy] quit

   [*PE2-segment-routing] quit

   [*PE2] commit

   配置完成后，可以使用display sr-te policy命令查看SR-MPLS TE Policy信息。以PE1的显示为例：

   [~PE1] display sr-te policy

   PolicyName : policy100
   Endpoint             : 3.3.3.9              Color                : 100
   TunnelId             : 1                    TunnelType           : SR-TE Policy
   Binding SID          : 115                  MTU                  : 1000
   Policy State         : UP                   BFD                  : Disable
   Admin State          : UP                   DiffServ-Mode        : -
   Traffic Statistics   : Disable              Backup Hot-Standby   : Disable
   Candidate-path Count : 2                    
   
   Candidate-path Preference: 200
   Path State           : Valid                Path Type            : Primary
   Protocol-Origin      : Configuration(30)    Originator           : 0, 0.0.0.0
   Discriminator        : 200                  Binding SID          : -
   GroupId              : 2                    Policy Name          : policy100
   Segment-List Count   : 1
    Segment-List        : pe1
     Segment-List ID    : 129                  XcIndex              : 68
     List State         : UP                   BFD State            : -
     EXP                : 0                    TTL                  : 255
     DeleteTimerRemain  : -
     Label : 330000, 330002
   
   Candidate-path Preference: 100
   Path State           : Invalid              Path Type            : -
   Protocol-Origin      : Configuration(30)    Originator           : 0, 0.0.0.0
   Discriminator        : 100                  Binding SID          : -
   GroupId              : 1                    Policy Name          : policy100
   Segment-List Count   : 1
    Segment-List        : pe1backup
     Segment-List ID    : 194                  XcIndex              : -
     List State         : DOWN                 BFD State            : -
     EXP                : 0                    TTL                  : 255
     DeleteTimerRemain  : -
     Label : 330001, 330003

6. 配置SBFD及HSB功能

   # 配置PE1。

   [~PE1] bfd

   [*PE1-bfd] quit

   [*PE1] sbfd

   [*PE1-sbfd] reflector discriminator 1.1.1.9

   [*PE1-sbfd] quit

   [*PE1] segment-routing

   [*PE1-segment-routing] sr-te-policy seamless-bfd enable

   [*PE1-segment-routing] sr-te-policy backup hot-standby enable

   [*PE1-segment-routing] commit

   [~PE1-segment-routing] quit

   # 配置PE2。

   [~PE2] bfd

   [*PE2-bfd] quit

   [*PE2] sbfd

   [*PE2-sbfd] reflector discriminator 3.3.3.9

   [*PE2-sbfd] quit

   [*PE2] segment-routing

   [*PE2-segment-routing] sr-te-policy seamless-bfd enable

   [*PE2-segment-routing] sr-te-policy backup hot-standby enable

   [*PE2-segment-routing] commit

   [~PE2-segment-routing] quit

7. 配置路由策略

   # 配置PE1。

   [~PE1] route-policy color100 permit node 1

   [*PE1-route-policy] apply extcommunity color 0:100

   [*PE1-route-policy] quit

   [*PE1] commit

   # 配置PE2。

   [~PE2] route-policy color200 permit node 1

   [*PE2-route-policy] apply extcommunity color 0:200

   [*PE2-route-policy] quit

   [*PE2] commit

8. 在PE之间建立MP-IBGP对等体关系，同时VPNv4邻居应用入口策略，为路由添加扩展团体属性Color

   # 配置PE1。

   [~PE1] bgp 100

   [~PE1-bgp] peer 3.3.3.9 as-number 100

   [*PE1-bgp] peer 3.3.3.9 connect-interface loopback 1

   [*PE1-bgp] ipv4-family vpnv4

   [*PE1-bgp-af-vpnv4] peer 3.3.3.9 enable

   [*PE1-bgp-af-vpnv4] peer 3.3.3.9 route-policy color100 import

   [*PE1-bgp-af-vpnv4] commit

   [~PE1-bgp-af-vpnv4] quit

   [~PE1-bgp] quit

   # 配置PE2。

   [~PE2] bgp 100

   [~PE2-bgp] peer 1.1.1.9 as-number 100

   [*PE2-bgp] peer 1.1.1.9 connect-interface loopback 1

   [*PE2-bgp] ipv4-family vpnv4

   [*PE2-bgp-af-vpnv4] peer 1.1.1.9 enable

   [*PE2-bgp-af-vpnv4] peer 1.1.1.9 route-policy color200 import

   [*PE2-bgp-af-vpnv4] commit

   [~PE2-bgp-af-vpnv4] quit

   [~PE2-bgp] quit

   配置完成后，在PE设备上执行display bgp peer或display bgp vpnv4 all peer命令，可以看到PE之间的BGP对等体关系已建立，并达到Established状态。以PE1的显示为例。

   [~PE1] display bgp peer

    BGP local router ID : 10.13.1.1
    Local AS number : 100
    Total number of peers : 1          Peers in established state : 1
     Peer            V    AS  MsgRcvd  MsgSent     OutQ  Up/Down    State        PrefRcv
     3.3.3.9         4   100        2        6     0     00:00:12   Established   0

   [~PE1] display bgp vpnv4 all peer

    BGP local router ID : 10.13.1.1
    Local AS number : 100
    Total number of peers : 1                 Peers in established state : 1
     Peer            V    AS  MsgRcvd  MsgSent    OutQ  Up/Down    State        PrefRcv
     3.3.3.9         4   100   12      18         0     00:09:38   Established   0

9. 在PE设备上配置使能IPv4地址族的VPN实例，将CE接入PE

   # 配置PE1。

   [~PE1] ip vpn-instance vpna

   [*PE1-vpn-instance-vpna] ipv4-family

   [*PE1-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1

   [*PE1-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both

   [*PE1-vpn-instance-vpna-af-ipv4] quit

   [*PE1-vpn-instance-vpna] quit

   [*PE1] interface gigabitethernet0/2/0

   [*PE1-GigabitEthernet0/2/0] ip binding vpn-instance vpna

   [*PE1-GigabitEthernet0/2/0] ip address 10.1.1.2 24

   [*PE1-GigabitEthernet0/2/0] quit

   [*PE1] commit

   # 配置PE2。

   [~PE2] ip vpn-instance vpna

   [*PE2-vpn-instance-vpna] ipv4-family

   [*PE2-vpn-instance-vpna-af-ipv4] route-distinguisher 200:1

   [*PE2-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both

   [*PE2-vpn-instance-vpna-af-ipv4] quit

   [*PE2-vpn-instance-vpna] quit

   [*PE2] interface gigabitethernet0/2/0

   [*PE2-GigabitEthernet0/2/0] ip binding vpn-instance vpna

   [*PE2-GigabitEthernet0/2/0] ip address 10.3.1.2 24

   [*PE2-GigabitEthernet0/2/0] quit

   [*PE2] commit

   # 按图2-21配置各CE的接口IP地址，配置过程请参见后面的配置文件。

   配置完成后，在PE设备上执行display ip vpn-instance verbose命令可以看到VPN实例的配置情况。各PE能ping通自己接入的CE。

   当PE上有多个绑定了同一个VPN的接口，则使用ping -vpn-instance命令ping对端PE接入的CE时，要指定源IP地址，即要指定ping -vpn-instance vpn-instance-name -a source-ip-address dest-ip-address命令中的参数-a source-ip-address，否则可能ping不通。

10. 在PE设备上配置隧道选择策略，优选SR-MPLS TE Policy。

    # 配置PE1。

    [~PE1] tunnel-policy p1

    [*PE1-tunnel-policy-p1] tunnel select-seq sr-te-policy load-balance-number 1 unmix

    [*PE1-tunnel-policy-p1] quit

    [*PE1] commit

    [~PE1] ip vpn-instance vpna

    [*PE1-vpn-instance-vpna] ipv4-family

    [*PE1-vpn-instance-vpna-af-ipv4] tnl-policy p1

    [*PE1-vpn-instance-vpna-af-ipv4] quit

    [*PE1-vpn-instance-vpna] quit

    [*PE1] commit

    # 配置PE2。

    [~PE2] tunnel-policy p1

    [*PE2-tunnel-policy-p1] tunnel select-seq sr-te-policy load-balance-number 1 unmix

    [*PE2-tunnel-policy-p1] quit

    [*PE2] commit

    [~PE2] ip vpn-instance vpna

    [*PE2-vpn-instance-vpna] ipv4-family

    [*PE2-vpn-instance-vpna-af-ipv4] tnl-policy p1

    [*PE2-vpn-instance-vpna-af-ipv4] quit

    [*PE2-vpn-instance-vpna] quit

    [*PE2] commit

11. 在PE与CE之间建立EBGP对等体关系

    # 配置CE1。

    [~CE1] interface loopback 1

    [*CE1-LoopBack1] ip address 11.1.1.1 32

    [*CE1-LoopBack1] quit

    [*CE1] interface gigabitethernet0/1/0

    [*CE1-GigabitEthernet0/1/0] ip address 10.1.1.1 24

    [*CE1-GigabitEthernet0/1/0] quit

    [*CE1] bgp 65410

    [*CE1-bgp] peer 10.1.1.2 as-number 100

    [*CE1-bgp] network 11.1.1.1 32

    [*CE1-bgp] quit

    [*CE1] commit

    CE2的配置与CE1设备配置类似，配置过程请参见后面的配置文件。

    # 配置PE1。

    [~PE1] bgp 100

    [*PE1-bgp] ipv4-family vpn-instance vpna

    [*PE1-bgp-vpna] peer 10.1.1.1 as-number 65410

    [*PE1-bgp-vpna] commit

    [*PE1-bgp-vpna] quit

    PE2的配置与PE1类似，配置过程请参见后面的配置文件。

    配置完成后，在PE设备上执行display bgp vpnv4 vpn-instance peer命令，可以看到PE与CE之间的BGP对等体关系已建立，并达到Established状态。

    以PE1与CE1的对等体关系为例：

    [~PE1] display bgp vpnv4 vpn-instance vpna peer

     BGP local router ID : 10.13.1.1
     Local AS number : 100
    
     VPN-Instance vpna, Router ID 10.13.1.1:
     Total number of peers : 1                 Peers in established state : 1
    
      Peer            V          AS  MsgRcvd  MsgSent  OutQ  Up/Down       State  PrefRcv
      10.1.1.1        4       65410       91       90     0 01:15:39 Established        1

12. 检查配置结果

    在PE设备上执行display ip routing-table vpn-instance命令，可以看到去往CE上的Loopback接口路由。

    以PE1的显示为例：

    [~PE1] display ip routing-table vpn-instance vpna

    Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
    ------------------------------------------------------------------------------
    Routing Tables: vpna
             Destinations : 7        Routes : 7
    Destination/Mask    Proto  Pre  Cost     Flags NextHop         Interface
         10.1.1.0/24    Direct 0    0        D     10.1.1.2        GigabitEthernet0/1/0
         10.1.1.2/32    Direct 0    0        D     127.0.0.1       GigabitEthernet0/1/0
       10.1.1.255/32    Direct 0    0        D     127.0.0.1       GigabitEthernet0/1/0
        11.1.1.1/32     EBGP   255  0        RD    10.1.1.1        GigabitEthernet0/2/0
        22.2.2.2/32     IBGP   255  0        RD    3.3.3.9         SR TE Policy
          127.0.0.0/8   Direct  0    0             D   127.0.0.1       InLoopBack0
    255.255.255.255/32  Direct 0    0        D     127.0.0.1       InLoopBack0

    在PE设备上执行display ip routing-table vpn-instance vpna verbose命令，可以看到去往CE上的Loopback接口路由的详细信息。

    以PE1的显示为例：

    [~PE1] display ip routing-table vpn-instance vpna 22.2.2.2 verbose

    Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
    ------------------------------------------------------------------------------
    Routing Table : vpna
    Summary Count : 1
    
    Destination: 22.2.2.2/32         
         Protocol: IBGP               Process ID: 0              
       Preference: 255                      Cost: 0              
          NextHop: 3.3.3.9             Neighbour: 3.3.3.9
            State: Active Adv Relied         Age: 01h18m38s           
              Tag: 0                    Priority: low            
            Label: 48180                 QoSInfo: 0x0           
       IndirectID: 0x10000B9            Instance:                                 
     RelayNextHop: 0.0.0.0             Interface: SR TE Policy
         TunnelID: 0x000000003200000041 Flags: RD

    从以上信息可以看出，VPN路由已经成功迭代到SR-MPLS TE Policy。

    同一VPN的CE能够相互Ping通，例如：CE1能够Ping通CE2（22.2.2.2）。

    [~CE1] ping -a 11.1.1.1 22.2.2.2

      PING 22.2.2.2: 56  data bytes, press CTRL_C to break
        Reply from 22.2.2.2: bytes=56 Sequence=1 ttl=251 time=72 ms
        Reply from 22.2.2.2: bytes=56 Sequence=2 ttl=251 time=34 ms
        Reply from 22.2.2.2: bytes=56 Sequence=3 ttl=251 time=50 ms
        Reply from 22.2.2.2: bytes=56 Sequence=4 ttl=251 time=50 ms
        Reply from 22.2.2.2: bytes=56 Sequence=5 ttl=251 time=34 ms
      --- 22.2.2.2 ping statistics ---
        5 packet(s) transmitted
        5 packet(s) received
        0.00% packet loss
        round-trip min/avg/max = 34/48/72 ms