Enabling And Disabling Ipv6 Router Advertisements; Configuring Reachable Time For Remote Ipv6 Nodes - Dell PowerConnect B-RX Configuration Manual

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NOTE
When determining if hosts can use stateful autoconfiguration to get non-IPv6-address information,
a set Managed Address Configuration flag overrides an unset Other Stateful Configuration flag. In
this situation, the hosts can obtain nonaddress information. However, if the Managed Address
Configuration flag is not set and the Other Stateful Configuration flag is set, then the setting of the
Other Stateful Configuration flag is used.
By default, the Managed Address Configuration and Other Stateful Configuration flags are not set
in router advertisement messages. For example, to set these flags in router advertisement
messages sent from Ethernet interface 3/1, enter the following commands.
BigIron RX(config)# interface ethernet 3/1
BigIron RX(config-if-e100-3/1)# ipv6 nd managed-config-flag
BigIron RX(config-if-e100-3/1)# ipv6 nd other-config-flag
Syntax: [no] ipv6 nd managed-config-flag
Syntax: [no] ipv6 nd other-config-flag
To remove either flag from router advertisement messages sent on an interface, use the no form of
the respective command.

Enabling and disabling IPv6 router advertisements

If IPv6 unicast routing is enabled on an Ethernet interface, by default, this interface sends IPv6
router advertisement messages. However, by default, non-LAN interface types, for example, tunnel
interfaces, do not send router advertisement messages.
To disable the sending of router advertisement messages on an Ethernet interface, enter
commands such as the following.
BigIron RX(config)# interface ethernet 3/1
BigIron RX(config-if-e100-3/1)# ipv6 nd suppress-ra
To enable the sending of router advertisement messages on a tunnel interface, enter commands
such as the following.
BigIron RX(config)# interface tunnel 1
BigIron RX(config-tnif-1)# no ipv6 nd suppress-ra
Syntax: [no] ipv6 nd suppress-ra

Configuring reachable time for remote IPv6 nodes

You can configure the duration (in seconds) that a router considers a remote IPv6 node reachable.
By default, a router interface uses the value of 30 seconds.
The router advertisement messages sent by a router interface include the amount of time specified
by the ipv6 nd reachable-time command so that nodes on a link use the same reachable time
duration. By default, the messages include a default value of 0.
BigIron RX Series Configuration Guide
53-1001810-01
Other Stateful Configuration—This flag indicates to hosts on a local link if they can get non-IPv6
address autoconfiguration information. If the flag is set, the hosts can use stateful
autoconfiguration to get non-IPv6-address information.
Configuring IPv6 neighbor discovery
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