December 2001
Intermediate to advanced
608 pages
25h 14m
English
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Name
debug — global
Synopsis
debuglevelundebuglevelundebug all
Configures
System debugging
Default
Disabled
Description
This command enables debugging at the
specified level. Just about every
configuration item within the IOS has a debug level associated with
it. The debug
? command gives
you an extensive list that allows you to find the debug level that
meets your needs.
Be careful in selecting your debug level; you can easily crash a busy
router with the incorrect selection. For example,
debug
ip
packet might render a busy router useless until
debugging is disabled. See Chapter 14 for more
information on using debug correctly. If you get
in trouble, issue the command undebug
all, which disables all debug output.
Example
Here is the output from debug ip ?:
Router#debug ip ? bgp BGP information cache IP cache operations cgmp CGMP protocol activity dvmrp DVMRP protocol activity egp EGP information eigrp IP-EIGRP information error IP error debugging ftp FTP dialogue http HTTP connections icmp ICMP transactions igmp IGMP protocol activity igrp IGRP information mcache IP multicast cache operations mobile Mobility protocols mpacket IP multicast packet debugging mrouting IP multicast routing table activity ospf OSPF information packet General IP debugging and IPSO security transactions peer IP peer address activity pim PIM protocol activity policy Policy routing rip RIP protocol transactions routing Routing table events rsvp RSVP protocol activity sd Session Directory (SD) security IP security ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.