Setting The Age Timer For Nd Entries In Stale State; Configuring Parameters Related To Ra Messages - HP 6125G Configuration Manual

Step
3. Configure the maximum
number of neighbors
dynamically learned by an
interface.

Setting the age timer for ND entries in stale state

ND entries in stale state have an age timer. If an ND entry in stale state is not refreshed before the timer
expires, it transits to the delay state. If it is still not refreshed in five seconds, the ND entry transits to the
probe state, and the device sends an NS message for detection. If no response is received, the device
removes the ND entry.
To set the age timer for ND entries in stale state:
Step
1. Enter system view.
2. Set the age timer for ND
entries in stale state.

Configuring parameters related to RA messages

You can enable an interface to send RA messages, and configure the interval for sending RA messages
and parameters in RA messages. After receiving an RA message, a host can use these parameters to
perform corresponding operations.
message.
The maximum interval for sending RA messages should be less than (or equal to) the router lifetime in RA
messages, so the router can be updated through an RA message before expiration.
The values of the NS retransmission timer and the reachable time configured for an interface are sent to
hosts via RA messages. Furthermore, this interface sends NS messages at the interval of the NS
retransmission timer and considers a neighbor reachable within the reachable time.
Table 8 Parameters in an RA message and their descriptions
Parameters
Cur Hop Limit
Prefix Information
options
MTU
Command
ipv6 neighbors max-learning-num
number
Command
system-view
ipv6 neighbor stale-aging aging-time
Table 8 lists and describes the configurable parameters in an RA
Description
When sending an IPv6 packet, a host uses the value to fill the Hop Limit field in IPv6
headers. The value is also filled into the Hop Limit field in the response packet of a
device.
After receiving the prefix information, the hosts on the same link can perform
stateless autoconfiguration.
Make sure that all nodes on a link use the same MTU value.
92
Remarks
Optional.
By default, a Layer 2 interface does
not limit the number of neighbors
dynamically learned, and a Layer
3 interface can learn up to 2048
neighbors dynamically.
Remarks
N/A
Optional.
Four hours by default.