topologies (Protocols IS-IS)
Syntax
topologies {
ipv4-multicast;
ipv6-multicast;
ipv6-unicast;
}
Hierarchy Level
[edit logical-systems logical-system-name protocols isis],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols isis],
[edit protocols isis],
[edit routing-instances routing-instance-name protocols isis]
Release Information
Statement introduced before Junos OS Release 7.4.
Description
Configure alternate IS-IS multicast or unicast topologies.
The remaining statements are explained separately. See CLI Explorer.
The IS-IS interface metrics for the IPv4 topology can be configured independently of the IPv6 metrics. You can also selectively disable interfaces from participating in the IPv6 topology while continuing to participate in the IPv4 topology. This lets you exercise control over the paths that unicast data takes through a network.
Default
By default, multicast and unicast topologies are disabled.
Options
ipv4-multicast—Configure
alternate IPv4 multicast topologies.
ipv6-multicast—Configure
alternate IPv6 multicast topologies.
ipv6-unicast—Configure
alternate IPv6 unicast topologies. This statement causes IS-IS to
calculate an alternate IPv6 unicast topology, in addition to the normal
IPv4 unicast topology, and add the corresponding routes to inet6.0.
Required Privilege Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.