WX3510H控制 AP无法找到AC（ap获取了IP地址）

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*                 H3C WA4330-ACN BootWare, Version 1.12                    *

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Copyright (c) 2004-2016 Hangzhou H3C Technologies Co., Ltd.

Compiled Date       : Jun 28 2016

CPU Type            : ATHEROS AR9557

CPU L1 Cache        : 32KB

CPU Clock Speed     : 720MHz

Memory Type         : SDRAM

Memory Size         : 256MB

Memory Speed        : 560MHz

BootWare Size       : 512KB

Flash Size          : 32MB

PCB Version         : Ver.B

BootWare Validating...

Press Ctrl+B to enter extended boot menu...

Starting to get the main application file--flash:/wa4300_fit.bin!

The main application file does not exist--flash:/wa4300_fit.bin!

Starting to get the backup application file--flash:/backup.bin!

The backup application file does not exist--flash:/backup.bin!

Starting to get the secure application file--flash:/secure.bin!

The secure application file does not exist--flash:/secure.bin!

Booting App fails!

Trying to get the IP address from the DHCP server......

DHCP server's IP address is 192.168.6.100

Client's assigned address is 192.168.6.103

DNS domain name got from DHCP server is 

DNS server's IP address is 192.168.6.100

Default Gateway's IP address is 192.168.6.100

This client's subnet mask is 255.255.255.0

The length of option 43 is: 0

 Change State : Idle to Broadcast Discovery

 Change State : Broadcast Discovery to Unicast Discovery

get ac [***.***]'s ip...

Getting AC's IP Address Failed...

 Change State : Unicast Discovery to Sulking

 Change State : Idle to Broadcast Discovery

 Change State : Broadcast Discovery to Unicast Discovery

get ac [***.***]'s ip...

Getting AC's IP Address Failed...

 Change State : Unicast Discovery to Sulking

 Can't download the image from network, please check the network settings

 The system will reboot

 [State : Idle] Reset request, rebooting the AP

Rebooting......

如上是廋AP无法找到AC的控制台信息，其中AC和AP直连，且是二层（vlan 6）互通。     

假设将我的笔记本接到AP所接的AC的端口，笔记本是可以正常获取IP，也可以ping通AC。

其中AC接AP的端口配置如下：

[WX3510H]

#

interface GigabitEthernet1/0/2    //直连AP的端口

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 2 to 4094

 port trunk pvid vlan 6

#  

问题出在哪里呢？   求大神帮忙。