RA general operation
An IPv6 routing switch configured as a member of a given VLAN transmits RAs for use by hosts on the VLAN. It also transmits unscheduled RAs in response to router solicitations received from IPv6 hosts on the VLAN. The values a host receives in an RA are applied to settings that have not already been configured on the host by the system operator. (Values in an RA can also replace host settings that were learned from a previous RA.)
Advertisement Value |
Default |
Page |
|
---|---|---|---|
managed flag (M-bit) |
Not set |
VLAN context Neighbor Discovery (ND) configuration | |
other-config-flag (O-bit) |
Not set |
VLAN context Neighbor Discovery (ND) configuration | |
prefix |
The prefix of any global unicast IPv6 address configured on the VLAN interface1 |
Configuring the global unicast prefix and lifetime for hosts on a VLAN | |
length |
N/A; based on existing configuration |
— |
|
valid lifetime |
2,592,000 seconds (30 days) |
— |
|
preferred lifetime |
604,800 seconds (seven days) |
— |
|
autoconfig (A-bit) |
Set (host autoconfig enabled) |
— |
|
on-link (L-bit) |
Set (use prefix on subject VLAN) |
— |
|
RA transmission interval |
— |
||
maximum |
600 seconds |
Configuring the range for intervals between RA transmissions on a VLAN | |
minimum |
200 seconds |
Configuring the range for intervals between RA transmissions on a VLAN | |
current hop limit |
64 |
Setting or changing the hop-limit for host-generated packets | |
default lifetime |
1800 seconds (3 x max. transmission interval) |
Setting or changing the default router lifetime | |
reachable time |
Unspecified (0) |
Changing the reachable time duration for neighbors | |
retransmission timer |
Unspecified (0) |
Setting or changing the neighbor discovery retransmit timer |
Default operation excludes prefixes of stateless autoconfigured addresses.