操作步骤

1. 配置iPhone、Printer_1和Printer_2通过WLAN接入Internet，具体配置请参见配置小型网络WLAN基本业务示例。

   针对Apple iOS v6.0以上版本的移动终端，如果通过DHCP服务器动态获取IP地址，需要在地址池中执行命令dns-list（基于全局地址池）或dhcp server dns-list（基于接口地址池）配置DNS服务器的IP地址。

2. 在AC上使能mDNS网关功能。

   <AC6605> system-view
   [AC6605] sysname AC
   [AC] mdns gateway enable

3. 在AC上配置mDNS组。

   [AC] mdns group group1 
   [AC-mdns-group-group1] user-vlan 10
   [AC-mdns-group-group1] service-vlan 20
   [AC-mdns-group-group1] quit

4. 在AC上配置mDNS网关允许记录的常用服务类型。

   [AC] mdns permit service-type _raop._tcp.local id 0 
   [AC] mdns permit service-type _airplay._tcp.local id 1
   [AC] mdns permit service-type _printer._tcp.local id 2
   [AC] mdns permit service-type _device-info._tcp.local id 3
   [AC] mdns permit service-type _rfb._tcp.local id 4
   [AC] mdns permit service-type _sftp-ssh._tcp.local id 5
   [AC] mdns permit service-type _ssh._tcp.local id 6
   [AC] mdns permit service-type _smb._tcp.local id 7
   [AC] mdns permit service-type _afpovertcp._tcp.local id 8
   [AC] mdns permit service-type _universal._sub._ipp._tcp.local id 9

5. 在AC上配置定时发现服务功能。

   [AC] vlan 10
   [AC-vlan10] mdns probe interval 100 
   [AC-vlan10] quit
   [AC] interface vlanif 10
   [AC-Vlanif10] ip address 192.168.2.1 24
   [AC-Vlanif10] quit
   [AC] vlan 20
   [AC-vlan20] mdns probe interval 100 
   [AC-vlan20] quit
   [AC] interface vlanif 20
   [AC-Vlanif20] ip address 192.168.3.1 24
   [AC-Vlanif20] quit
   

6. 验证配置结果

   # 在AC上执行命令display mdns gateway，查看mDNS网关的配置信息。

   [AC] display mdns gateway          
   mDNS Information:                                                               
   --------------------------------------------------------------------------------
    mDNS Gateway Status         :  Enable                                          
    mDNS Gateway Policy         :  Enable                                          
    mDNS Policy no-match action :  Permit                                          
    mDNS Gateway Unicast        :  Disable                                         
    mDNS Source IP              :  -                                               
   --------------------------------------------------------------------------------
    Gateway Probe Vlan   :  vlan10  vlan20                                       
   --------------------------------------------------------------------------------

   # 在AC上执行命令display mdns service all，查看mDNS网关上记录的服务信息。

   # 配置完成后，在用户终端上能够找到VLAN10和VLAN20内的打印服务。