There are no specific requirements for this document.
This document is not restricted to specific software and hardware versions.
The information in this document was created from the devices in a specific lab environment.All of the devices used in this document started with a cleared (default) configuration.If your network is live, make sure that you understand the potential impact of any command.
注意debug ip ospf Hello命令的调试输出在Hello参数显示不匹配。这是示例调试输出：
*Oct 12 14:03:32.595: OSPF: Send hello to 22.214.171.124 area 0 on FastEthernet1/0 from 192.168.12.2
*Oct 12 14:03:33.227: OSPF: Rcv hello from 126.96.36.199 area 0 from FastEthernet1/0 192.168.12.1
*Oct 12 14:03:33.227: OSPF: Mismatched hello parameters from 192.168.12.1
!--- Indicates that there is mismtached hello parameters from 192.168.12.1
*Oct 12 14:03:33.231: OSPF: Dead R 2 C 3, Hello R 1 C 1 Mask R 255.255.255.0 C 255.255.255.0
*Oct 12 14:03:33.531: OSPF: Send hello to 188.8.131.52 area 0 on FastEthernet1/0 from 192.168.12.2