H3C BGP实验集合

 

实验目录:

1.BGP基本实验

2.非等级负载分担

3.LOCAL_PREF属性

实现离开本地AS时的最佳路由

4.MED属性

实现进入AS时的最佳路径

5.Prefered-value(首选值)属性

6.BGP反射

7.同步

实验拓扑:

 

 

 

 

1.EBGP对等体之间的基本配置

[R1]bgp 10

[R1-bgp]router-id 1.1.1.1

[R1-bgp]peer 192.168.1.2 as-number 20

[R1-bgp]peer 192.168.4.1 as-number 20(没用到)

[R1-bgp]net 1.1.1.1 32

[R1-bgp]q

 

[R2]bgp 20

[R2-bgp]router-id 2.2.2.2

[R2-bgp]peer 192.168.1.1 as-number 10        

[R2-bgp]network 2.2.2.2 32

 

 

 

2.建立邻居关系必须要求tcp可达,ospf宣告直连网段

[R2]ospf

[R2-ospf-1]area 0

[R2-ospf-1-area-0.0.0.0]net 192.168.2.0 0.0.0.255  

[R2-ospf-1-area-0.0.0.0]q

[R2-ospf-1]q

 

[R3]ospf

[R3-ospf-1]area 0

[R3-ospf-1-area-0.0.0.0]net 192.168.2.0 0.0.0.255

[R3-ospf-1-area-0.0.0.0]net 192.168.3.0 0.0.0.255

[R3-ospf-1-area-0.0.0.0]q

[R3-ospf-1]q

 

[R4]ospf

[R4-ospf-1]area 0

[R4-ospf-1-area-0.0.0.0]net 192.168.3.0 0.0.0.255

[R4-ospf-1-area-0.0.0.0]q

[R4-ospf-1]q

 

 

 

3.R2R3是建立邻居关系

[R2-bgp]peer 192.168.2.2 as-number 20

[R3]bgp 20

[R3-bgp]router-id 3.3.3.3

[R3-bgp]peer 192.168.2.1 as-number 20

[R3-bgp]network 3.3.3.3 32

 

[R2-bgp]display bgp routing-table

 

 Total Number of Routes: 3

 

 BGP Local router ID is 2.2.2.2

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         192.168.1.1     0                     0       10i

 *>  2.2.2.2/32         0.0.0.0         0                     0       i

 *>i 3.3.3.3/32         192.168.2.2     0          100        0       i

*代表有效路由

>代表最有路由

 

 

[R3-bgp]display bgp routing-table

 

 Total Number of Routes: 3

 

 BGP Local router ID is 3.3.3.3

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

   i 1.1.1.1/32         192.168.1.1     0          100        0       10i

 *>i 2.2.2.2/32         192.168.2.1     0          100        0       i

 *>  3.3.3.3/32         0.0.0.0         0                     0       i

关于到1.1.1。1的无效我们下面讲

 

 

4.R3R4开启邻居关系

[R3-bgp]peer 192.168.3.2 as-number 20

[R4-bgp]peer 192.168.3.1 as-number 20

 

R2上学不到R4的4.4.4.4,同样R4也学不到R2的路由

 

 

[R3-bgp]display bgp routing-table

 

 Total Number of Routes: 3

 

 BGP Local router ID is 3.3.3.3

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

   i 1.1.1.1/32         192.168.1.1     0          100        0       10i

 *>i 2.2.2.2/32         192.168.2.1     0          100        0       i

 *>  3.3.3.3/32         0.0.0.0         0                     0       i

上面可以看到,R3已经有到1.1.1.1、2.2.2.2网络的路由,R3不会发给R4吗??

看R4的,答案是没有把路由信息发给R4

原因是:BGP遵循AS_PATH属性。

AS_PATH属性是公认比遵循属性。该属性主要解决环路问题,BGP发言者从IBGP获得的路由不向它的IBGP对等实体发送!

 

[R4-bgp]display bgp routing-table

 

 Total Number of Routes: 1

 

 BGP Local router ID is 4.4.4.4

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>i 3.3.3.3/32         192.168.3.1     0          100        0       i

 

 

5.我们要创建全连接

[R2]bgp 20

[R2-bgp]peer 192.168.3.2 as-number 20

[R4]bgp 20

[R4-bgp]peer 192.168.2.1 as-number 20

 

 

查看到1.1.1.1的路由不是有效的,我们下面解决

[R4-bgp]display bgp routing-table

 

 Total Number of Routes: 3

 

 BGP Local router ID is 4.4.4.4

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

   i 1.1.1.1/32         192.168.1.1     0          100        0       10i

 *>i 2.2.2.2/32         192.168.2.1     0          100        0       i

 *>i 3.3.3.3/32         192.168.3.1     0          100        0       i

 

 

从上面的输出可以看出,R4到1.1.1.1不是有效的,是因为下一跳是192.168.1.1的原因

R4根本就不知道到达192.168.1.1的路径!

 

出现的最终原因是什么呢?

答案:NEXT_HOP属性。NEXT_HOP也是公认比遵循属性。

 

下面是NEXT_HOP的四个特性!

1.BGP发言者把自己产生的路由发给所有邻居时,将把改路由信息的下一跳属性修改他们直连的网段。像R4学到R3的路由,下一跳就是192.168.3.1

2.BGP发言者把从EBGP邻居得到的路由发给IBGP邻居时,并不改变该路由信息的下一跳属性,将从EBGP得到的路由的NEXT_HOP直接传递给IBGP对等体。像R3从R2学到R1路由,下一跳是192.168.1.1

3.当内部的发给外部的就不是上面的那样的,下一跳会是他们直连的网段。像R1从R2学到R3路由,下一跳是192.168.1.2

 

 

解决方法是配置R2

[R2]bgp 20

[R2-bgp]peer 192.168.3.2 next-hop-local

 

此时在查看R4到R1的路由为有效了

[R4-bgp]display bgp routing-table

 

 Total Number of Routes: 3

 

 BGP Local router ID is 4.4.4.4

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>i 1.1.1.1/32         192.168.2.1     0          100        0       10i

 *>i 2.2.2.2/32         192.168.2.1     0          100        0       i

 *>i 3.3.3.3/32         192.168.3.1     0          100        0       i

为什么下一跳就是192.168.2.1而不是192.168.3.1呢?

因为R1的路由信息是从R2传到R4的(逻辑上的bgp邻居)

 

 

查看一下R3的bgp路由

[R3]display bgp routing-table

 

 Total Number of Routes: 3

 

 BGP Local router ID is 3.3.3.3

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

   i 1.1.1.1/32         192.168.1.1     0          100        0       10i

 *>i 2.2.2.2/32         192.168.2.1     0          100        0       i

 *>  3.3.3.3/32         0.0.0.0         0                     0       i

 

同样是不可达的,我们怎样解决呢?同上啊!原理一样!

[R2]bgp 20

[R2-bgp]peer 192.168.2.2 next-hop-local

 

 

6.此时我们宣告一下4.4.4.4 32网络,查看所有的bgp路由情况

 

R1的到所有的都有效、最优

display bgp routing-table

 

 Total Number of Routes: 4

 

 BGP Local router ID is 1.1.1.1

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         0.0.0.0         0                     0       i

 *>  2.2.2.2/32         192.168.1.2     0                     0       20i

 *>  3.3.3.3/32         192.168.1.2                           0       20i

 *>  4.4.4.4/32         192.168.1.2                           0       20i

 

并且加上源地址能ping同。为什么不加源地址不行呢?

原因是R1不是知道as20内的直连网络,在ping的时候没有可以匹配的路由,数据包丢弃

ping -a 1.1.1.1 4.4.4.4

  PING 4.4.4.4: 56  data bytes, press CTRL_C to break

    Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=253 time=34 ms

    Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=253 time=20 ms

    Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=253 time=10 ms

    Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=253 time=1 ms

    Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=253 time=20 ms

 

  --- 4.4.4.4 ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 1/17/34 ms

 

 

[R4]ping -a 4.4.4.4 1.1.1.1

  PING 1.1.1.1: 56  data bytes, press CTRL_C to break

    Reply from 1.1.1.1: bytes=56 Sequence=1 ttl=253 time=35 ms

    Reply from 1.1.1.1: bytes=56 Sequence=2 ttl=253 time=20 ms

    Reply from 1.1.1.1: bytes=56 Sequence=3 ttl=253 time=20 ms

    Reply from 1.1.1.1: bytes=56 Sequence=4 ttl=253 time=1 ms

    Reply from 1.1.1.1: bytes=56 Sequence=5 ttl=253 time=1 ms

 

  --- 1.1.1.1 ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 1/15/35 ms

 

6.怎样才能不加源地址呢?

引进直连路由

 

[R1]bgp 10

[R1-bgp]import-route direct

[R2]bgp 20

[R2-bgp]import-route direct

 

此时查看一下R1的路由

[R1]display ip routing-table

Routing Tables: Public

        Destinations : 14       Routes : 14

 

Destination/Mask    Proto  Pre  Cost         NextHop         Interface

 

1.1.1.1/32          Direct 0    0            127.0.0.1       InLoop0

2.2.2.2/32          BGP    255  0            192.168.1.2     S0/2/0

3.3.3.3/32          BGP    255  0            192.168.1.2     S0/2/0

4.4.4.4/32          BGP    255  0            192.168.1.2     S0/2/0

127.0.0.0/8         Direct 0    0            127.0.0.1       InLoop0

127.0.0.1/32        Direct 0    0            127.0.0.1       InLoop0

192.168.1.0/24      Direct 0    0            192.168.1.1     S0/2/0

192.168.1.1/32      Direct 0    0            127.0.0.1       InLoop0

192.168.1.2/32      Direct 0    0            192.168.1.2     S0/2/0

192.168.2.0/24      BGP    255  0            192.168.1.2     S0/2/0

192.168.2.2/32      BGP    255  0            192.168.1.2     S0/2/0

192.168.4.0/24      Direct 0    0            192.168.4.2     S0/2/1

192.168.4.1/32      Direct 0    0            192.168.4.1     S0/2/1

192.168.4.2/32      Direct 0    0            127.0.0.1       InLoop0

 

[R1]ping 4.4.4.4

  PING 4.4.4.4: 56  data bytes, press CTRL_C to break

    Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=253 time=15 ms

    Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=253 time=1 ms

    Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=253 time=10 ms

    Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=253 time=10 ms

    Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=253 time=20 ms

 

  --- 4.4.4.4 ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 1/11/20 ms

 

 

当R4 ping 1.1.1.1时怎么ping不通呢?

因为数据包过去了,没有回来!

当R4发的ping包到源地址是192.168.3.2目的地址1.1.1.1达R1后,R1做出回应。ping包的源地址1.1.1.1目的地址为192.168.3.2,而R1的路由表里没有,所以丢弃

[R4]ping 1.1.1.1  

  PING 1.1.1.1: 56  data bytes, press CTRL_C to break

    Request time out

    Request time out

    Request time out

    Request time out

    Request time out

 

  --- 1.1.1.1 ping statistics ---

    5 packet(s) transmitted

    0 packet(s) received

    100.00% packet loss

 

 

要想直接ping同。可以在R3或者R4上引入直连的,只要让R1学的到到192.168.3.2的路由便可以

[R3]bgp 20

[R3-bgp]import-route direct

配置BGP基本实验结束

 

 

 

 

 

 

 

 

 

二.非等级负载分担

实验拓扑:

在实验一得基础上添加了R1R4之间的邻居关系

 

从R1查看到R3的路由,发现到3.3.3.3走的R2

 

实现负载分担的命令是:

[R1]bgp 10

[R1-bgp]balance 2     /默认是1

 

 

从上面可以看出R1到3.3.3.3实现了负载!

 

 

 

 

三.LOCAL_PREF属性

 

简介:

实现选择离开本地AS时的最佳路径

会影响本as区域内的选路,当本区域到达某个目的网段有多个路径时,可以配置local_pref属性来影响选路!

数值越大越优先

实验拓扑:

R3----R4----R1

 

R3-----R2-----R1

 

 

现在查看R3到1.1.1.1走的是R2即:R3-----R2-----R1

 

 

我们做下修改。让R3到R1的路径走: R3----R4----R1

[R4]bgp 20

[R4-bgp]default local-preference ? 

  INTEGER<0-4294967295>  Specify a local preference

[R4-bgp]default local-preference 200

 

 

 

 

 

 

 

四.MED属性

简介:

实现进入AS时的最佳路径

MED用于EBGP邻居有多条路径到达本AS的情况,用途是告诉EBGP邻居进入本AS的较优先路径!

数值越小越优先

实验拓扑:

 

 

修改R2的med

[R2]bgp 20

[R2-bgp]default med ?

  INTEGER<0-4294967295>  MED value

 

[R2-bgp]default med 2

 

 

 

 

 

 

 

 

 

 

五.Prefered-value(首选值)属性

简介:

首选值为私有BGP属性,通过为从不同对等体接受到的路由分配不同的首选值。

越大越好!

 

 

 

 

 

 

 

六.BGP反射

 

实验人:高承旺

实验名称:BGP反射

实验拓扑:

 

实验步骤

R1与R2建立邻居关系

[R1]bgp 10

[R1-bgp]router-id 1.1.1.1         

[R1-bgp]peer 192.168.1.2 as-number 20             

[R1-bgp]net 1.1.1.1 32

[R1-bgp]q

 

[R2]bgp 20

[R2-bgp]peer 192.168.1.1 as-number 10

[R2-bgp]router-id 2.2.2.2

[R2-bgp]net 2.2.2.2 32

[R2-bgp]q

 

 

开启ospf

[R2]ospf

[R2-ospf-1]area 0

[R2-ospf-1-area-0.0.0.0]net 192.168.2.0 0.0.0.255

 

[R3]ospf

[R3-ospf-1]area 0

[R3-ospf-1-area-0.0.0.0]net 192.168.2.0 0.0.0.255

[R3-ospf-1-area-0.0.0.0]net 192.168.3.0 0.0.0.255

[R3-ospf-1-area-0.0.0.0]q

[R3-ospf-1]q

 

[R4]ospf

[R4-ospf-1]area 0

[R4-ospf-1-area-0.0.0.0]net 192.168.3.0 0.0.0.255

[R4-ospf-1-area-0.0.0.0]q

[R4-ospf-1]q

 

 

IBGP邻居建立

R2----R3---R4

R2和R4之间不建立邻居

[R2]bgp 20

[R2-bgp]peer 192.168.2.2 as-number 20

[R2-bgp]q

[R3]bgp 20

[R3-bgp]peer 192.168.2.1 as-number 20  

[R3-bgp]peer 192.168.3.2 as-number 20

[R3-bgp]q

[R3]bgp 20

[R3-bgp]router-id 3.3.3.3

[R3-bgp]net 3.3.3.3 32

 

[R4]bgp 20

[R4-bgp]router-id 4.4.4.4

[R4-bgp]peer 192.168.3.1 as-n 

[R4-bgp]peer 192.168.3.1 as-number 20

[R4-bgp]network 4.4.4.4 32

 

 

到1.1.1.1的不是有效最优的

[R3]display bgp routing-table

 

 Total Number of Routes: 4

 

 BGP Local router ID is 3.3.3.3

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

   i 1.1.1.1/32         192.168.1.1     0          100        0       10i

 *>i 2.2.2.2/32         192.168.2.1     0          100        0       i

 *>  3.3.3.3/32         0.0.0.0         0                     0       i

 *>i 4.4.4.4/32         192.168.3.2     0          100        0       i

 

 

[R2-bgp]peer 192.168.2.2 next-hop-local  

 

 

开启反射

[R3]bgp 20

[R3-bgp]peer 192.168.2.1 reflect-client 

[R3-bgp]peer 192.168.3.2 reflect-client

 

[R2]display bgp routing-table

 

 Total Number of Routes: 4

 

 BGP Local router ID is 2.2.2.2

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         192.168.1.1     0                     0       10i

 *>  2.2.2.2/32         0.0.0.0         0                     0       i

 *>i 3.3.3.3/32         192.168.2.2     0          100        0       i

   i 4.4.4.4/32         192.168.3.2     0          100        0       i

 

虽然邻居创建好了,但是是不能通信的,因为BGP不知道到192。168.3.0的网段!

让BGP知道知道192.168.3.0网络

 

[R3]bgp 20

[R3-bgp]net 192.168.3.0 24

 

 

display bgp routing-table

 

 Total Number of Routes: 5

 

 BGP Local router ID is 1.1.1.1

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         0.0.0.0         0                     0       i

 *>  2.2.2.2/32         192.168.1.2     0                     0       20i

 *>  3.3.3.3/32         192.168.1.2                           0       20i

 *>  4.4.4.4/32         192.168.1.2                           0       20i

 *>  192.168.3.0        192.168.1.2                           0       20i

 

 

[R1]ping -a 1.1.1.1 4.4.4.4

  PING 4.4.4.4: 56  data bytes, press CTRL_C to break

    Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=253 time=15 ms

    Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=253 time=20 ms

    Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=253 time=1 ms

    Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=253 time=20 ms

    Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=253 time=20 ms

 

  --- 4.4.4.4 ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 1/15/20 ms

 

 

 

 

 

 

 

 

 

七.BGP同步

简介:

开启同步,内网必须要知道到外网as的网段

实验拓扑:在实验六的基础上!

 

 

 

邻居建立:

取消上面实验的IBGP邻居关系

R2-----R4创建邻居关系。

R3不与R2、R4创建邻居关系

[R2]bgp 20

[R2-bgp]peer 192.168.3.2 as-number 20

 

[R4]bgp 20

[R4-bgp]peer 192.168.2.1 as-number 20

 

[R4-bgp]peer 192.168.4.2 as-number 30

 

[R5]bgp 30

[R5-bgp]router-id 5.5.5.5

[R5-bgp]peer 192.168.4.1 as-number 20

[R5-bgp]net 5.5.5.5 32   

[R5-bgp]q

 

[R2]bgp 20

[R2-bgp]peer 192.168.3.2 next-hop-local

[R4]bgp 20

[R4-bgp]peer 192.168.2.1 next-hop-local

 

 

display bgp routing-table

 

 Total Number of Routes: 4

 

 BGP Local router ID is 1.1.1.1

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         0.0.0.0         0                     0       i

 *>  2.2.2.2/32         192.168.1.2     0                     0       20i

 *>  4.4.4.4/32         192.168.1.2                           0       20i

 *>  5.5.5.5/32         192.168.1.2                           0       20 30i

 

 

 

[R5]display bgp routing-table

 

 Total Number of Routes: 4

 

 BGP Local router ID is 5.5.5.5

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         192.168.4.1                           0       20 10i

 *>  2.2.2.2/32         192.168.4.1                           0       20i

 *>  4.4.4.4/32         192.168.4.1     0                     0       20i

 *>  5.5.5.5/32         0.0.0.0         0                     0       i

上面输出表面所有的邻居已经创建成功!

 

 

我们开启R2和R4的同步

[R2]bgp 20

[R2-bgp]synchronization

 

 

[R4]bgp 20

[R4-bgp]synchronization

[R4-bgp]q

 

display bgp routing-table

 

 Total Number of Routes: 2

 

 BGP Local router ID is 1.1.1.1

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         0.0.0.0         0                     0       i

 *>  2.2.2.2/32         192.168.1.2     0                     0       20i

开启后邻居关系变了,原因是内部网络不知道到达外网AS的网段

总之:开启同步,内网必须要知道到外网as的网段

 

做法有很多种。只要内部的有到外部的网段就行!

我们以用ospf引进bgp路由来学习外网网段

[R2]ospf

[R2-ospf-1]import-route bgp

[R4]ospf

[R4-ospf-1]import-route bgp

 

 

display bgp routing-table

 

 Total Number of Routes: 3

 

 BGP Local router ID is 1.1.1.1

 Status codes: * - valid, > - best, d - damped,

               h - history,  i - internal, s - suppressed, S - Stale

               Origin : i - IGP, e - EGP, ? - incomplete

     Network            NextHop         MED        LocPrf     PrefVal Path/Ogn

 

 *>  1.1.1.1/32         0.0.0.0         0                     0       i

 *>  2.2.2.2/32         192.168.1.2     0                     0       20i

 *>  5.5.5.5/32         192.168.1.2                           0       20 30i

 

 

ping -a 1.1.1.1 5.5.5.5

  PING 5.5.5.5: 56  data bytes, press CTRL_C to break

    Reply from 5.5.5.5: bytes=56 Sequence=1 ttl=252 time=34 ms

    Reply from 5.5.5.5: bytes=56 Sequence=2 ttl=252 time=1 ms

    Reply from 5.5.5.5: bytes=56 Sequence=3 ttl=252 time=1 ms

    Reply from 5.5.5.5: bytes=56 Sequence=4 ttl=252 time=1 ms

    Reply from 5.5.5.5: bytes=56 Sequence=5 ttl=252 time=10 ms

 

  --- 5.5.5.5 ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 1/9/34 ms

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

转载于:https://www.cnblogs.com/niezhongle/p/11213400.html

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