System information

Book Title
Gathering Information About Your Internetwork
C-522
• Output from general show commands:
show interfaces
show controllers
show processes {cpu | mem}
show buffer
show mem summary
• Output from protocol-specific show commands:
show protocol route
show protocol traffic
show protocol interfaces
show protocol arp
show appletalk globals (AppleTalk only)
show ipx servers (Novell IPX only)
• Output from relevant debug privileged exec commands
• Output from protocol-specific ping and trace diagnostic tests, as appropriate
• Network analyzer traces, as appropriate
• Core dumps obtained using the exception dump router configuration command, or using the
write core router configuration command if the system is operational, as appropriate
Getting the Data from Your Router
You must tailor the way you obtain information from the router to the system you are using to
retrieve the information. Following are some hints for different platforms:
• PC and Macintosh—Connect a PC or Macintosh to the console port of the router and log all
output to a disk file (using a terminal emulation program). The exact procedure varies depending
on the communication package used with the system.
• Terminal connected to console port or remote terminal—The only way to get information with a
terminal connected to the console port or with a remote terminal is to attach a printer to the
auxiliary port on the terminal (if one exists) and force all screen output to go to the printer. Using
a terminal is undesirable because in that situation there is no way to capture the data to a file.
• UNIX workstation—At the UNIX prompt, enter the command script filename, and then Telnet
to the router. The UNIX script command captures all screen output to the specified filename. To
stop capturing output and close the file, enter the end-of-file character (typically ^D) for your
UNIX system.
Note To get your system to automatically log specific error messages or operational information to
a UNIX syslog server, use the logging internet-address router configuration command. For more
information about using the logging command and setting up a syslog server, refer to the Cisco IOS
configuration guides and command references.