3Com MSR 30, MSR 50 manual 85

85 IPV6 RIPNG CONFIGURATION
COMMANDS
checkzero
Syntax checkzero
undo checkzero
View RIPng view
Parameters None
Description Use the checkzero command to enable the zero field check on RIPng packets.
Use the undo checkzero command to disable the zero field check.
The zero field check is enabled by default.
Some fields in RIPng packet headers must be zero. These fields are called zero
fields. You can enable the zero field check on RIPng packet headers. If any such
field contains a non-zero value, the RIPng packet will be discarded.
Examples # Disable the zero field check on RIPng packet headers of RIPng 100.
<Sysname> system-view
[Sysname] ripng 100
[Sysname-ripng-100] undo checkzero
default cost (RIPng view)
Syntax default cost cost
undo default cost
View RIPng view
Parameters cost: Default metric of redistributed routes, in the range of 0 to 16.
Description Use the default cost command to specify the default metric of redistributed
routes.
Use the undo default cost command to restore the default.