Debug Mvrdbg - Cisco Catalyst 3750 Command Reference Manual
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Appendix B
Catalyst 3750 Switch Debug Commands
debug mvrdbg
Use the debug mvrdbg privileged EXEC command to enable debugging of Multicast VLAN
Registration (MVR). Use the no form of this command to disable debugging output.
Syntax Description
all
events
igmpsn
management
ports
Defaults
Debugging is disabled.
Command Modes
Privileged EXEC
Command History
Release
12.1(11)AX
Usage Guidelines
The undebug mvrdbg command is the same as the no debug mvrdbg command.
When you enable debugging, it is enabled only on the stack master. To enable debugging on a stack
member, you must start a session from the stack master by using the session switch-number privileged
EXEC command. Then enter the debug command at the command-line prompt of the stack member.
Related Commands
Command
show debugging
show mvr
78-16181-01
debug mvrdbg {all | events | igmpsn | management | ports}
no debug mvrdbg {all | events | igmpsn | management | ports}
Display all MVR activity debug messages.
Display MVR event-handling debug messages.
Display MVR Internet Group Management Protocol (IGMP) snooping-activity
debug messages.
Display MVR management-activity debug messages.
Display MVR port debug messages.
Modification
This command was introduced.
Description
Displays information about the types of debugging that are enabled. For
syntax information, select Cisco IOS Release 12.2 Configuration Guides
and Command References > Cisco IOS Configuration Fundamentals
Configuration Guide, Release 12.2 > System Management >
Troubleshooting and Fault Management.
Displays the current MVR configuration.
Catalyst 3750 Switch Command Reference
debug mvrdbg
B-19
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