489
part belongs to non 0 area; Layer 3 switch DR should be specified for multi-access
network such as broadcast network.
If the OSPF routing problem remains unresolved after checking and debugging,
please use debug ospf packet/events commands and record the debug messages in
three minutes ,then send it to our technical service center.
14.6.5.1 Monitor And Debug Command
14.6.5.1.1 debug ospf events
Command: [no]debug ospf events
[abr|asbr|lsa|nssa|os|router|vlink
]
Function:
Open debugging switches showing various OSPF events messages; the
“
[no]debug ospf events
[abr|asbr|lsa|nssa|os|router|vlink
]” command closes the
debugging switch.
Default:
Closed
Command Mode:
Admin and global mode
Example:
Switch#debug ospf events router
14.6.5.1.2 debug ospf ifsm
Command: [no]debug ospf ifsm [status|events|timers]
Function:
Open debugging switches showing the OSPF interface states; the “
[no]debug
ospf ifsm [status|events|timers]
” command closes this debugging switches.
Default:
Closed
Command Mode:
Admin mode and global mode
Example:
Switch#debug ospf ifsm events
14.6.5.1.3 debug ospf lsa
Command: [no]debug ospf lsa
[generate|flooding|install|maxage|refresh]
Function:
Open debugging switches showing showing link state announcements; the
“
[no]debug ospf lsa
[generate|flooding|install|maxage|refresh]
” closes the debugging
switches.
Default:
Closed
Command Mode:
Admin mode and global mode
Example:
Switch#debug ospf lsa generate
14.6.5.1.4 debug ospf nfsm
Command: [no]debug ospf nfsm
[status|events|timers]
Function:
Open debugging switches showing showing OSPF neighbor state machine;
the “
[no]debug ospf nfsm
[status|events|timers]
”command closes this debugging
switch
Default:
Closed