Lenovo RackSwitch G8264CS Cli Command Reference page 570

IPv6 Path MTU Configuration
IPv6 Neighbor Discovery Prefix Configuration
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G8264CS Command Reference for ENOS 8.4
The following table describes the configuration options for Path MTU (Maximum
Transmission Unit). The Path MTU cache can consume system memory and affect
performance. These commands allow you to manage the Path MTU cache.
Table 332.
IPv6 Path MTU Options
Command Syntax and Usage
ip pmtu6 timeout {0|<10‐100>}
Sets the timeout value for Path MTU cache entries, in minutes. Enter 0 (zero) to
set the timeout to infinity (no timeout).
The default value is 10 minutes.
Command mode: Global configuration
clear ipv6 pmtu
Clears all entries in the Path MTU cache.
Command mode: Privileged EXEC
show ipv6 pmtu
Displays the current Path MTU configuration.
Command mode: All
The following table describes the Neighbor Discovery prefix configuration options.
These commands allow you to define a list of prefixes to be placed in Prefix
Information options in Router Advertisement messages sent from an interface.
Table 333.
IPv6 Neighbor Discovery Prefix Options
Command Syntax and Usage
interface ip <1‐128>
Enters Interface IP mode.
Command mode: Global configuration
ipv6 nd prefix <IPv6 prefix> <IPv6 prefix length> [no­advertise]
Adds a Neighbor Discovery prefix to the interface.
The default setting is enabled.
To disable the prefix and not advertise it in the Prefix Information options in
Router Advertisement messages sent from the interface use the
no­advertise option.
Additional prefix options are listed below.
Command mode: Interface IP