网络通信 频道

实战:关于网络两端网段重叠的处理方法

  三、采用NAT方式的配置:

  备注:此时2端的地址使用无试验2的限制。但是需要额外的地址池。这样分配给74.40.88.0/24段的地址池是;172.16.0.0/24;分配给74.40.88.0/28网段的地址池是10.0.0.0/28。

  这样当PC1访问PC2的时候用10.0.0.2(最后一个IP字节相对应),同理PC2访问PC1的时候用172.16.0.200(最后一个IP字节相对应)。
  配置如下:其中红色部分为关键配置
  路由器A:
  #sysname AR2810-A
  #cpu-usage cycle 1min
  #router id 1.1.1.1
  #radius scheme system
  #domain system
  #local-user admin
  password cipher .]@USE=B,53Q=^Q`MAF4<1!!
  service-type telnet terminal
  level 3
  service-type ftp
  #interface Aux0
  async mode flow
  #interface Ethernet0/0
  ip address 74.40.88.254 255.255.255.0
  #interface Serial0/0
  clock DTECLK1                           
  link-protocol ppp
  ip address dhcp-alloc
  #
  interface Serial2/0
  clock DTECLK1
  link-protocol ppp
  #interface Serial3/0
  clock DTECLK1
  link-protocol ppp
  #interface NULL0
  #info-center synchronous
  #FTP server enable
  #ip route-static 10.0.0.0 255.255.255.240 74.40.88.253 preference 60
  #
  user-interface con 0
  idle-timeout 0 0
  user-interface aux 0
  user-interface vty 0 4
  authentication-mode scheme              ?
  #
  return
  路由器B:
  #
  sysname AR2810-B
  #cpu-usage cycle 1min
  #router id 2.2.2.2
  #nat static inside ip 74.40.88.1 74.40.88.254 global ip 172.16.0.0 255.255.255.0
  #radius scheme system
  #domain system
  #local-user admin
  password cipher .]@USE=B,53Q=^Q`MAF4<1!!
  service-type telnet terminal
  level 3
  service-type ftp
  #interface Aux0
  async mode flow
  #interface Ethernet0/0
  ip address 74.40.88.253 255.255.255.0
  #                                        ?
  interface Serial0/0
  link-protocol ppp
  ip address 192.168.1.1 255.255.255.252
  nat outbound static
  #interface NULL0
  #info-center synchronous
  #FTP server enable
  #
  ip route-static 10.0.0.0 255.255.255.240 192.168.1.2 preference 60
  #
  user-interface con 0
  idle-timeout 0 0
  user-interface aux 0
  user-interface vty 0 4
  authentication-mode scheme
  #return

  路由器C:
  #sysname AR1810-C
  #cpu-usage cycle 1min
  #router id 3.3.3.3
  #nat static inside ip 74.40.88.1 74.40.88.15 global ip 10.0.0.0 255.255.255.240
  #radius scheme system
  #domain system
  #
  local-user admin
  password cipher .]@USE=B,53Q=^Q`MAF4<1!!
  service-type telnet terminal
  level 3
  service-type ftp
  #
  interface Aux0
  async mode flow
  #interface Ethernet0/0
  ip address 74.40.88.1 255.255.255.240
  #                                        ?
  interface Serial0/0
  clock DTECLK1
  link-protocol ppp
  ip address 192.168.1.2 255.255.255.252
  nat outbound static
  #interface NULL0
  #info-center synchronous
  #FTP server enable
  #ip route-static 172.16.0.0 255.255.255.0 192.168.1.1 preference 60
  #
  user-interface con 0
  idle-timeout 0 0
  user-interface aux 0
  user-interface vty 0 4
  authentication-mode scheme
  #
  return
  互通结果验证:
  S2016(PC1):
  <S2016>ping 10.0.0.2
  PING 10.0.0.2: 56  data bytes, press CTRL+C to break
  Reply from 10.0.0.2: bytes=56 Sequence=1 ttl=253 time = 91 ms
  Reply from 10.0.0.2: bytes=56 Sequence=2 ttl=253 time = 100 ms
  Reply from 10.0.0.2: bytes=56 Sequence=3 ttl=253 time = 88 ms
  Reply from 10.0.0.2: bytes=56 Sequence=4 ttl=253 time = 91 ms
  Reply from 10.0.0.2: bytes=56 Sequence=5 ttl=253 time = 93 ms

  --- 10.0.0.2 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 88/92/100 ms

  <S2016>
  S2008(PC2):
  <S2008>ping 172.16.0.200
  PING 172.16.0.200: 56  data bytes, press CTRL+C to break
  Reply from 172.16.0.200: bytes=56 Sequence=1 ttl=252 time = 90 ms
  Reply from 172.16.0.200: bytes=56 Sequence=2 ttl=252 time = 93 ms
  Reply from 172.16.0.200: bytes=56 Sequence=3 ttl=252 time = 111 ms
  Reply from 172.16.0.200: bytes=56 Sequence=4 ttl=252 time = 112 ms
  Reply from 172.16.0.200: bytes=56 Sequence=5 ttl=252 time = 108 ms

  --- 172.16.0.200 ping statistics ---
  5 packet(s) transmitted
  5 packet(s) received
  0.00% packet loss
  round-trip min/avg/max = 90/102/112 ms

  <S2008>

  四、采用主机路由条目指定
  备注:此方法即在PC,及经过的所有路径上配置相应的主机路由,因配置较点较多工作量大,也容易出问题并且不利于排错,此处不做研究。
  tu.jpg (15.21 KB) 2008-6-14 17:50

0
相关文章