IPv6 Configuration Guide K/KA/KB.15.15

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Global unicast addresses configured on VLAN 100
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To enable advertising prefixes of global unicast addresses
configured on the VLAN, the default command sets default
lifetime, prefix link status (on or off-link), autoconfiguration
(Autonomous Flag) status (on or off), and advertisement setting
(on or off).
NOTE: Applies only to prefixes in global unicast addresses
configured on the VLAN and not uniquely configured by the
prefix command.
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Show command displays default prefix mode settings for
global unicast addresses configured on VLAN 100
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New global unicast address configured on the VLAN.
Followed by command to assign unique lifetime and
autoconfig setting in the advertisements for this prefix. Link
flag and Advertise flag omitted from the command and
therefore set to “On” by default.
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Off-link prefix designated with unique lifetime. Autoconfig
(Autonomous) flag and Advertise flag omitted from the
command and therefore set to “On” default
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Show command displays default advertisement settings for
prefixes of global unicast addresses configured on VLAN
100
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Show command displays unique advertisement settings for
2001:db8:0:a::/64 also configured on VLAN 100
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Show command displays unique advertisement settings for
2001:db8:0:d::/64 identified as an off-link prefix
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For prefixes configured on the VLAN and not specifically
addressed by a prefix command, default changes the default
lifetime and the autoconfig setting in advertisements for these
prefixes. On-Link flag and Advertise flag omitted from the
command and therefore set to “On” by default
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Show command displays changes in default prefix mode
settings for global unicast addresses configured on VLAN
100
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No change for the on-link prefix specifically configured by a
prefix command, and the off-link prefix that is also configured
for advertisement on the VLAN
Suppressing Router Advertisements on a VLAN
Syntax:
[no] ipv6 nd ra suppress
VLAN or tunnel context command to turn off (disable) transmission of RAs from the
routing switch on the VLAN.
The no form of the command turns on (enables) router advertisement transmission
from the routing switch on the current VLAN or tunnel.
Default: Suppression disable, that is, router advertisement enabled on the VLAN or
tunnel.
194 IPv6 Router Advertisements