H3C S5500-SI Series Operation Manual page 18

Operation Manual – IPv6
H3C S5500-SI Series Ethernet Switches
Parameters
Router lifetime
Retrans timer
Reachable time
Note:
The values of the Retrans Timer field and the Reachable Time field configured for an
interface are sent to hosts via RA messages. Furthermore, this interface sends NS
messages at intervals of Retrans Timer and considers a neighbor reachable within the
time of Reachable Time.
Follow these steps to configure parameters related to an RA message:
Enter system view
Configure the current hop
limit
Enter interface view
Disable the RA message
suppression
This field is used to set the lifetime of the router that sends
RA messages to serve as the default router of hosts.
According to the router lifetime in the received RA
messages, hosts determine whether the router sending RA
messages can serve as the default router of hosts.
If the device fails to receive a response message within the
specified time after sending an NS message, the device will
retransmit it.
After the neighbor reachability detection shows that a
neighbor is reachable, the device considers the neighbor is
reachable within the reachable time. If the device needs to
send a packet to a neighbor after the reachable time expires,
the device will again confirm whether the neighbor is
reachable.
To do...
system-view
ipv6 nd hop-limit value
interface interface-type
interface-number
undo ipv6 nd ra halt
Chapter 1 IPv6 Basics Configuration
Description
Use the command...
1-17
Remarks
—
Optional
64 by default.
—
Optional
By default, RA messages
are suppressed.