实操 ：华为DHCP中继服务配置

前言：

该实验是华为模拟器eNSP模拟器、dhcp中继实验
#DHCP中继的应用场景：
通常在DHCP分配网段过多的情况下，网关路由器上配置DHCP服务，压力过大，
一般我们用第二路由器，或则第二台DHCP服务器来分担业务

dhcp 中继

这里设置一台专用的DHCP服务器为pc机配置IP地址

LSW1

system-view Enter system view, return user view with Ctrl+Z.[Huawei]sysname LSW1[LSW1]un in enInfo: Information center is disabled.[LSW1]vlan bat 10 20Info: This operation may take a few seconds. Please wait for a moment...done.[LSW1]int e 0/0/1[LSW1-Ethernet0/0/1]p l a[LSW1-Ethernet0/0/1]p d v 10[LSW1-Ethernet0/0/1]un shInfo: Interface Ethernet0/0/1 is not shutdown.[LSW1-Ethernet0/0/1]int e 0/0/2[LSW1-Ethernet0/0/2]p l a[LSW1-Ethernet0/0/2]p d v 20[LSW1-Ethernet0/0/2]un shInfo: Interface Ethernet0/0/2 is not shutdown.[LSW1-Ethernet0/0/2]int e 0/0/3[LSW1-Ethernet0/0/3]p l a[LSW1-Ethernet0/0/3]p d v 10[LSW1-Ethernet0/0/3]un shInfo: Interface Ethernet0/0/3 is not shutdown.[LSW1-Ethernet0/0/3]int e 0/0/4[LSW1-Ethernet0/0/4]p l a[LSW1-Ethernet0/0/4]p d v 20[LSW1-Ethernet0/0/4]un shInfo: Interface Ethernet0/0/4 is not shutdown.[LSW1-Ethernet0/0/4]int g 0/0/1[LSW1-GigabitEthernet0/0/1]p l t[LSW1-GigabitEthernet0/0/1]p t a v a[LSW1-GigabitEthernet0/0/1]un shInfo: Interface GigabitEthernet0/0/1 is not shutdown.[LSW1-GigabitEthernet0/0/1]dis vlan The total number of vlans is : 31    common  UT:Eth0/0/5(D)     Eth0/0/6(D)     Eth0/0/7(D)     Eth0/0/8(D)                     Eth0/0/9(D)     Eth0/0/10(D)    Eth0/0/11(D)    Eth0/0/12(D)                    Eth0/0/13(D)    Eth0/0/14(D)    Eth0/0/15(D)    Eth0/0/16(D)                    Eth0/0/17(D)    Eth0/0/18(D)    Eth0/0/19(D)    Eth0/0/20(D)                    Eth0/0/21(D)    Eth0/0/22(D)    GE0/0/1(U)      GE0/0/2(D)      10   common  UT:Eth0/0/1(U)     Eth0/0/3(U)                                                  TG:GE0/0/1(U)                                                      20   common  UT:Eth0/0/2(U)     Eth0/0/4(U)                                                  TG:GE0/0/1(U)                                                                       [LSW1-GigabitEthernet0/0/1][LSW1-GigabitEthernet0/0/1]dis int bInUti/OutUti: input utility/output utilityInterface                   PHY   Protocol InUti OutUti   inErrors  outErrorsEthernet0/0/1               up    up          0%     0%          0          0Ethernet0/0/2               up    up          0%     0%          0          0Ethernet0/0/3               up    up          0%     0%          0          0Ethernet0/0/4               up    up          0%     0%          0          0GigabitEthernet0/0/1        up    up          0%     0%          0          0

R1

system-view Enter system view, return user view with Ctrl+Z.[Huawei]un in enInfo: Information center is disabled.[Huawei]dhcp enableInfo: The operation may take a few seconds. Please wait for a moment.done.[Huawei]int g 0/0/0[Huawei-GigabitEthernet0/0/0]ip add 14.0.0.1 24[Huawei-GigabitEthernet0/0/0]un shInfo: Interface GigabitEthernet0/0/0 is not shutdown.[Huawei-GigabitEthernet0/0/0]int g 0/0/3[Huawei-GigabitEthernet0/0/3]ip add 12.0.0.1 24[Huawei-GigabitEthernet0/0/3]un shInfo: Interface GigabitEthernet0/0/3 is not shutdown.[Huawei-GigabitEthernet0/0/3]q[Huawei]vlan bat 10 20Info: This operation may take a few seconds. Please wait for a moment...done.[Huawei]int g 0/0/1.10[Huawei-GigabitEthernet0/0/1.10]dot1q termination vid 10[Huawei-GigabitEthernet0/0/1.10]ip add 192.168.10.1 24[Huawei-GigabitEthernet0/0/1.10]un shInfo: Interface GigabitEthernet0/0/1.10 is not shutdown.[Huawei-GigabitEthernet0/0/1.10]q[Huawei]int g 0/0/1.10[Huawei-GigabitEthernet0/0/1.10]dis this#interface GigabitEthernet0/0/1.10 dot1q termination vid 10 ip address 192.168.10.1 255.255.255.0#return[Huawei-GigabitEthernet0/0/1.10]a b e [Huawei-GigabitEthernet0/0/1.10]dhcp select relay[Huawei-GigabitEthernet0/0/1.10]dhcp relay server-ip 14.0.0.2[Huawei-GigabitEthernet0/0/1.10]q[Huawei]int g 0/0/1.20[Huawei-GigabitEthernet0/0/1.20]dot1q termination vid 20[Huawei-GigabitEthernet0/0/1.20]ip add 192.168.20.1 24[Huawei-GigabitEthernet0/0/1.20]a b e[Huawei-GigabitEthernet0/0/1.20]dhcp select relay [Huawei-GigabitEthernet0/0/1.20]dhcp relay server-ip 14.0.0.2[Huawei-GigabitEthernet0/0/1.20]q[Huawei]ip route-static 15.0.0.0 24 12.0.0.2[Huawei]

R2

system-view Enter system view, return user view with Ctrl+Z.[Huawei]sysname R2[R2]un in enInfo: Information center is disabled.[R2]int g 0/0/3[R2-GigabitEthernet0/0/3]ip add 12.0.0.2 24[R2-GigabitEthernet0/0/3]un shInfo: Interface GigabitEthernet0/0/3 is not shutdown.[R2-GigabitEthernet0/0/3]int e 0/0/0[R2-Ethernet0/0/0]q[R2]dhcp enable Info: The operation may take a few seconds. Please wait for a moment.done.[R2]int e 0/0/0[R2-Ethernet0/0/0]ip add 15.0.0.1 24[R2-Ethernet0/0/0]un shInfo: Interface Ethernet0/0/0 is not shutdown.[R2-Ethernet0/0/0]dhcp select relay [R2-Ethernet0/0/0]dhcp relay server-ip 14.0.0.2[R2-Ethernet0/0/0]q[R2]ip route-static 14.0.0.0 24 12.0.0.1[R2]ip route-static 192.168.0.0 16 12.0.0.1[R2]dis ip ?  as-path-filter       Specify regular expression access list number  community-filter     Add a community-filter entry  error                Information of error packet  extcommunity-filter  Match BGP/*** extended community filter  ha                   Display information of socket HA  host                 Host table(s)  interface            Show information of interfaces  ip-prefix            Specify an address prefix-list  ipv6-prefix          Specify an IPv6 address prefix-list  netstream            Netstream feature  policy-based-route   Display policy based routing information  pool                 Configure a local IP pool  prefix-limit         Prefix limit  rd-filter            Route-distinguisher filter  routing-table        Routing table  socket               Display information of created sockets  statistics           Display statistics information of datagram  topology             The name of topology  userlog              Userlog feature  ***-instance         *** instance information[R2]dis ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public         Destinations : 8        Routes : 8        Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface       12.0.0.0/24  Direct  0    0           D   12.0.0.2        GigabitEthernet0/0/3       12.0.0.2/32  Direct  0    0           D   127.0.0.1       GigabitEthernet0/0/3       14.0.0.0/24  Static  60   0          RD   12.0.0.1        GigabitEthernet0/0/3       15.0.0.0/24  Direct  0    0           D   15.0.0.1        Ethernet0/0/0       15.0.0.1/32  Direct  0    0           D   127.0.0.1       Ethernet0/0/0      127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0      127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0    192.168.0.0/16  Static  60   0          RD   12.0.0.1        GigabitEthernet0/0/3[R2]

R3

system-view Enter system view, return user view with Ctrl+Z.[Huawei]sysname R3[R3]un in enInfo: Information center is disabled.[R3]dhcp enable Info: The operation may take a few seconds. Please wait for a moment.done.[R3]int g 0/0/0[R3-GigabitEthernet0/0/0]ip add 14.0.0.2 24[R3-GigabitEthernet0/0/0]un shInfo: Interface GigabitEthernet0/0/0 is not shutdown.[R3-GigabitEthernet0/0/0]dhcp select global [R3-GigabitEthernet0/0/0]q[R3]ip pool dhcp192.168.10.0Info:It's successful to create an IP address pool.[R3-ip-pool-dhcp192.168.10.0]network 192.168.10.0 mask 24[R3-ip-pool-dhcp192.168.10.0]gateway 192.168.10.1[R3-ip-pool-dhcp192.168.10.0]dns-list 1.1.1.1[R3-ip-pool-dhcp192.168.10.0]?ip-pool view commands:  arp-ping             ARP-ping  ce-ping              Ce-ping tool  configuration        Configuration interlock  display              Display current system information  dns-list             Configure DNS servers  domain-name          Configure domain name   excluded-ip-address  Mark disable IP addresses   gateway-list         Configure the gateway  import               Imports the following network configuration parameters                       from a central server into local ip pool database:                       domain name, dns server and netbios server.  lease                Configure the lease of the IP pool  lock                 Lock the IP pool  mac-populate         Populate an OAM MAC to FDB entry  mac-purge            Purge an OAM MAC from FDB entry  monitor              System monitor dynamic show  mtrace               Trace route to multicast source  nbns-list            Configure the windows's netbios name servers   netbios-type         Netbios node type  network              Add a network  next-server          The address of the server to use in the next step of the                       client's bootstrap process.  option               Configure the DHCP options  option121            DHCP option 121   option184            DHCP option 184  ping                 Send echo messages  quit                 Exit from current command view  reset                Reset operation  return               Exit to user view  screen-width         Set screen width  static-bind          Static bind  test-aaa             Accounts test  trace                Trace route (switch) to host on Data Link Layer  tracert              Trace route to host  undo                 Cancel current setting  ***-instance         Config *** instance  vrbd                 Display version information[R3-ip-pool-dhcp192.168.10.0]q[R3]ip pool dhcp192.168.20.0Info:It's successful to create an IP address pool.[R3-ip-pool-dhcp192.168.20.0]network 192.168.20.0 mask 24[R3-ip-pool-dhcp192.168.20.0]gateway-list 192.168.20.1[R3-ip-pool-dhcp192.168.20.0]dns-list 1.1.1.1 2.2.2.2[R3-ip-pool-dhcp192.168.20.0]q[R3]ip pool dhcp15.0.0.0Info:It's successful to create an IP address pool.[R3-ip-pool-dhcp15.0.0.0]network 15.0.0.0 mask 24[R3-ip-pool-dhcp15.0.0.0]static-bind ip-address 15.0.0.88 mac-address 5489-98AB-2A25Error:Please configure the gateway first.[R3-ip-pool-dhcp15.0.0.0]gateway-list 15.0.0.1[R3-ip-pool-dhcp15.0.0.0]static-bind ip-address 15.0.0.88 mac-address 5489-98AB-2A25[R3-ip-pool-dhcp15.0.0.0]q[R3]ip route-static 0.0.0.0 0.0.0.0 14.0.0.1[R3]

结果如下