show isis route download priority

Syntax

Description

Display the routes in the IS-IS routing table in the sequence of set priority. IS-IS routes set with a high priority are displayed first followed by medium and low priority prefixes. Internet Service Providers (ISP) can configure route priority to ensure faster convergence for important customers.

Configure a routing policy to assign a priority to IS-IS routes. These routes are updated in the routing table in the order of their priority. In the event of an IS-IS topology change, high priority prefixes are updated in the routing table first followed by medium and then low priority prefixes.

Options

none	Display all routes in the IS-IS routing table in order of their priority for all supported address families for all routing instances.
`destination`	(Optional) Destination address for the route for which you want to display the priority.
floodgroup `floodgroup`	(Optional) Display the priority of routes that belong to a specific floodgroup.
inet \| inet6	(Optional) Display IS-IS route priority for inet (IPv4) or inet6 (IPv6) routes, respectively.
instance `instance-name`	(Optional) Display route priority for the specified routing instance only.
iso	(Optional) Display the priority of Connectionless Network Service (CLNS) routes.
nexthop `interface` \| `neighbor`	Display the priority of routes reachable through a specific next hop.
logical-system (all \| `logical-system-name`)	(Optional) Perform this operation on all logical systems or on a particular logical system.
topology (ipv4-multicast \| ipv6-multicast \| ipv6-unicast \| unicast)	(Optional) Display routes in order of the set priority for the specified topology only, or use unicast to display information, if available, for both IPv4 and IPv6 unicast topologies.

Required Privilege Level

view

Output Fields

Table 1 describes the output fields for the show isis route command. Output fields are listed in the approximate order in which they appear.

Table 1: show isis route Output Fields
Field Name	Field Description
Current version	Number of the current version of the IS-IS routing table.
L1	Version of Level 1 SPF that was run.
L2	Version of Level 2 SPF that was run.
Prefix or Label	Destination of the route.
L	IS-IS level: 1—Level 1 only 2—Level 2 only 3—Level 1 and Level 2
Version	Version of SPF that generated the route.
Metric	Metric value associated with the route.
Type	Metric type: int (internal) or ext (external).
Interface	Interface to the next hop.
Via	System identifier of the next hop, displayed as a name if possible.
NH	Next hop address type: IPv4, IPv6, or MPLS.
Backup Score	Count of available backup paths.

Sample Output