Configuring IPv6 globally

Global configuration includes the following:

IPv6 alternative routes: To avoid traffic interruption, enable alternative routes globally on the switch, to replace the best route with the next-best route if the best route becomes unavailable. By default, this feature is enabled.

Before you begin

Change the VRF instance as required to configure IPv6 globally on a specific VRF instance. Not all parameters are configurable on non-default VRFs.

Procedure

In the navigation tree, expand the Configuration > IPv6 folders.
Click IPv6.
Click the Globals tab.
In the DefaultHopLimit box, enter the preferred number of hops before packets drop.
To enable ICMP network unreachable messages, click IcmpNetUnreach.
In the IcmpErrorInterval box, enter the preferred interval for sending ICMPv6 error messages.
In the IcmpErrorQuota box, enter the preferred number of ICMP error messages that the system can send during the ICMP error interval.
To enable IPv6 multicast, click IcmpMulticastRequestEnable.
To enable IPv6 ICMP address unreachable messages, click IcmpAddrUnreach.
To enable IPv6 ICMP port unreachable messages, click IcmpPortUnreach.
To enable IPv6 autoconfiguration, click Autoconfig.
To enable IPv6 static routes globally, click StaticRouteGlobalAdminEnabled.
To enable IPv6 Source Routing, click SourceRouteEnable.
To clear all IPv6 static routes, click RouteStaticClear.
To enable IPv6 alternative routes, click AlternativeRouteEnable.
To configure IPv6 ECMP globally, select enable or disable, in the EcmpEnable option box.
In the EcmpMaxPath box, enter the preferred number of equal-cost paths.
Click Apply.

Globals field descriptions

Use the data in the following table to use the Globals tab.


Name	Description
Forwarding	Configures whether this switch is an IPv6 router with respect to the forwarding of datagrams received by, but not addressed to, the switch. Select forwarding for the switch to act as a router for IPv6 traffic. Select notForwarding to not act as a router for IPv6 traffic. The default is forwarding. You must enable forwarding to use Telnet or Ping with IPv6.
DefaultHopLimit	Configures the hop limit. The default is 64.
Interfaces	Shows the number of interfaces.
IfTableLastChange	Shows the date of the last interface table change.
IcmpNetUnreach	Enables ICMP network unreachable messages. The default is disabled.
IcmpErrorInterval	Configures the interval (in milliseconds) for sending ICMPv6 error messages. The default is 1000. An entry of 1 seconds results in no sent ICMPv6 error messages.
IcmpErrorQuota	Configures the number of ICMP error messages that the system can send during the ICMP error interval. A value of zero specifies not to send any. The default value is 50.
IcmpMulticastRequestEnable	Globally enables or disables the IPv6 ICMP echo multicast request feature. This is enabled by default.
IcmpAddrUnreach	Enables or disabled ICMP address unreachable messages. This is enabled by default.
IcmpPortUnreach	Enables or disables ICMP port unreachable messages. This is enabled by default.
Autoconfig	Enables or disables stateless address autoconfiguration. This is disabled by default.
StaticRouteGlobalAdminEnabled	Enables IPv6 static routes globally. If you disable static routes globally, the system removes all enabled static routes from the RTM and does not add new static routes to the RTM. The default is enabled.
RouteStaticClear	Clears all IPv6 static routes.
SourceRouteEnable	Globally enables or disables the IPv6 Source Routing feature. It is disabled by default.
PrefixListTableSize	Displays the prefix list table size.
RoutePrefTableSize	Displays the route preference table size.
AlternativeRouteEnable	Globally enables or disables the IPv6 alternative route feature. By default, this feature is enabled.
EcmpEnable	Enables or disables the IPv6 ECMP globally. By default, it is disabled.
EcmpMaxPath	Globally configures the maximum number of ECMP paths. The number of paths supported is either 1 to 4 or 1 to 8, depending on your hardware platform. When ECMP is enabled, the default value is either 4 or 8 depending on your hardware platform. You cannot configure this feature unless ECMP is enabled globally.