--------SourceView-----------
** Version 1.3.1.Alpha, Release Date 2007.09.11
* Modifiy: Sometimes the bridgeAddress of switch(or router) can not be got,
thereby fetching again before this node is added to the nodes list.
(DiscoverEngine.addHost())
* Modifiy: SnmpWalk operation.(SnmpService.snmpWalk())
* Modifiy: Vlan-interface mapping,affected by modification of SnmpWalk
operation(ExtendSnmpUtil.getVlanIfMap()).
* Add: Printing out the debug information when it is needed.
(SysProperty.isLogDebug())
--------GDPLN------------
1.完成有关“板卡、接口和通道”的程序。
2.找到完整的PVC信息，包括PVC两端的设备、接口和通道。