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JunosE 11.3.x IP, IPv6, and IGP Configuration Guide
Fast Reroute Protection
Removing an IPv6 Configuration
no ipv6
146
Use the no version to restore the default value, 1 for BGP or 4 for IS-IS, OSPF, or RIP.
See maximum-paths
If a link goes down, ECMP uses fast reroute protection to shift packet forwarding to use
operational links, thereby decreasing packet loss. Fast reroute protection updates ECMP
sets for the interface without having to wait for the route table update process. When
the next route table update occurs, a new ECMP set can be added with fewer links or the
route might point to a single next hop.
CAUTION: To provide ECMP fast reroute functionality in the event of an
interface failure, the members of an equal cost multipath must be resolved
to corresponding interfaces. If the member is an indirect next hop, the interface
is obtained by using the forwarding equivalence class (FEC) to which the
member points. This method of resolving members occurs only if the FEC,
pointed to by the indirect next hop, is either an interface or a direct next hop.
An indirect next hop member is not resolved to an interface if it points to
another indirect next hop or to an equal cost multipath. ECMP fast reroute
functionality is not available if any interfaces that correspond to unresolved
indirect next hop members go down.
If you modify an indirect next hop member to point to a different FEC (that
is, a different interface, direct next hop, indirect next hop, or ECMP), the
indirect next hop member is not resolved for the new changes.
To remove an IPv6 configuration from the virtual router, issue the no ipv6 command.
Use to remove IPv6 configuration from the virtual router.
Example
host1(config)#no ipv6
NOTE: The E Series router automatically starts IPv6 processing when you
begin configuring an IPv6 interface. However, by issuing the ipv6 command
without using the no option, you can create an IPv6 processing instance
with no IPv6 configuration.
See ipv6
Copyright © 2010, Juniper Networks, Inc.
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