Brocade VDX 6730 Hardware Reference Manual (Supporting VDX 6730-32 and VDX 6730-76) - Manual (Page 37)

Brocade VDX 6730 Hardware Reference Manual 19
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Enabling and disabling Brocade VCS mode
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Setting stateless IPv6 autoconfiguration
IPv6 allows assignment of multiple IP addresses to each network interface. Each interface is
configured with a link local address in almost all cases, but this address is only accessible from
other hosts on the same network. To provide for wider accessibility, interfaces are typically
configured with at least one additional global scope IPv6 address. IPv6 autoconfiguration allows
more IPv6 addresses, the number of which is dependent on the number of routers serving the local
network and the number of prefixes they advertise.
When IPv6 autoconfiguration is enabled, the platform will engage in stateless IPv6
autoconfiguration. When IPv6 autoconfiguration is disabled, the platform will relinquish usage of
any autoconfigured IPv6 addresses that it may have acquired while IPv6 autoconfiguration was
enabled. This same enabled or disabled state also enables or disables the usage of a link local
address for each managed entity (though a link local address will continue to be generated for
each switch) because those link local addresses are required for router discovery.
The enabled or disabled state of autoconfiguration does not affect any static IPv6 addresses that
may have been configured. Stateless IPv6 autoconfiguration and static IPv6 addresses can
co-exist.
1. Issue the configure terminal command to enter global configuration mode.
2. Take the appropriate action based on whether you want to enable or disable IPv6
autoconfiguration:
• Enter the ipv6 address autoconfig command to enable IPv6 autoconfiguration for all
managed entities on the target platform.
• Enter the no ipv6 address autoconfig command to disable IPv6 autoconfiguration for all
managed entities on the target platform.
Enabling and disabling Brocade VCS mode
Enable or disable a single switch for VCS™ mode as soon as passwords have been assigned and an
IP address has been set. Enabling VCS mode is disruptive because a reboot is required once the
mode has been enabled. Enabling or disabling VCS mode also causes the default configuration file
for that mode to be applied. The Brocade VDX 6730 ships with a two-node VCS license by default.
VCS mode is disabled by default.
The basic configuration tasks include enabling or disabling VCS mode explicitly, setting VCS
parameters, and applying the default configuration. If you disable VCS mode, you do not have to set
the other parameters. For more details about enabling VCS mode and setting VCS parameters,
refer to the Brocade Network OS Administrator’s Guide and the Brocade Network OS Command
Reference Guide.
Enabling VCS mode
Perform the following steps to enable VCS mode.
1. Log in to the switch using an account that has the admin role.
2. Enter the vcs enable command, including the RBridge parameter, as in the following example.
vcs rbridge-id 1 enable