Reference Guide

722 | IPv6 Basics
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ipv6 unicast-routing
c e s
Enable IPv6 Unicast routing.
Syntax
ipv6 unicast-routing
To disable unicast routing, use the no ipv6 unicast-routing command.
Defaults
Enabled
Command Modes
CONFIGURATION
Command
History
Usage
Information
Since this command is enabled by default, it does not appear in the running configuration. When
unicast routing is disabled, the no ipv6 unicast-routing command is included in the running
configuration. Whenever unicast routing is disabled or re-enabled, FTOS generates a syslog message
indicating the action.
Disabling unicast routing on an E-Series chassis causes the following behavior:
• static and protocol learnt routes are removed from RTM and from the CAM; packet forwarding to
these routes is terminated.
• connected routes and resolved neighbors remain in the CAM and new IPv6 neighbors are still
discoverable
• additional protocol adjacencies (OSPFv3 and BGP4) are brought down and no new adjacencies
are formed
• the IPv6 address family configuration (under router bgp) is deleted
• IPv6 Multicast traffic continues to flow unhindered
Version 8.4.2.1 Introduced on S-Series
Version 8.2.1.0 Introduced on E-Series ExaScale
Version 7.8.1.0 Introduced on C-Series
Version 7.4.1.0 Introduced on E-Series TeraScale