show isis routes

Displays the routes in the IS-IS route table.

Syntax

show isis routes [ ip-address subnet-mask | ip-address/prefix ]

Parameters

ip-address subnet-mask
Specifies an IP address and network mask.
ip-address/prefix
Specifies an IP address and prefix.

Modes

Privileged EXEC mode

Usage Guidelines

IS-IS is supported on the Extreme 8820, SLX 9740, SLX 9640, and SLX 9540 devices only.

Output

The show isis routes command displays the following information:

Output field

Description

Total number of IS-IS routes

The total number of routes in the device‘s IS-IS route table. The total includes Level-1 and Level-2 routes.

Destination

The IP destination of the route.

Mask

The subnet mask for the destination address.

Cost

The IS-IS default metric for the route, which is the cost of using this route to reach the next-hop router to this destination.

Type

The route type, which can be one of the following:

  • L1 - Level-1 route
  • L2 - Level-2 route

Tag

The tag value associated with the route.

Path

The path number in the table. The IS-IS route table can contain multiple equal-cost paths to the same destination, in which case the paths are numbered consecutively. When IP load sharing is enabled, the device can load balance traffic to the destination across the multiple paths.

Next Hop IP

The IP address of the next-hop interface to the destination.

Interface

The device interface (port or virtual interface) attached to the next hop.

Flags

Values used by technical support for troubleshooting.

Examples

The following is sample output for the show isis routes command when no argument or keyword is used.

device# show isis routes