在本体上debug结果:
*Jan
1 00:08:44:819 2014 wt1 CWC/7/TMR: MaxDiscovery Interval timer expired.
*Jan
1 00:08:44:819 2014 wt1 CWC/7/EVENT: Failed to discover AC by method of static
IPv4.
*Jan
1 00:08:44:819 2014 wt1 CWC/7/EVENT: Start ipv4 static dns discover.
*Jan
1 00:08:44:819 2014 wt1 CWC/7/ERROR: Proc DnsQuery failed, Reason: Host name is
NULL.
*Jan
1 00:08:44:819 2014 wt1 CWC/7/EVENT: Start ipv6 static dns discover.
*Jan
1 00:08:44:819 2014 wt1 CWC/7/ERROR: Proc DnsQuery failed, Reason: Host name is
NULL.
*Jan
1 00:08:44:819 2014 wt1 CWC/7/FSM: Enter Sulking state.
AP一般会按照DHCP Option43、广播组播、DNS的顺序尝试发现AC,直到成功为止。本体已经指定了AC的地址,并且和AC能通,那么为什么本体还采取了最后一种DNS的方式来注册上线呢?
经查看,AC上的管理vlan为2200,WT上配置成了vlan2020的地址,vlan1没有地址,由于WT需要在AC上上线,本质上和AP一样只能够接受vlan1的报文,所以需要在本体上行口打管理vlan的pvid。