Enabling Is-Is Routing - Cisco Catalyst 9500 series Configuration Manual

Enabling IS-IS Routing

Feature
NSF Awareness
Partial route computation (PRC)
throttling timers
Partition avoidance
Password
Set-overload-bit
Shortest path first (SPF) throttling
timers
Summary-address
Enabling IS-IS Routing
To enable IS-IS, you specify a name and NET for each routing process. You then enable IS-IS routing on the
interface and specify the area for each instance of the routing process.
Procedure
Step 1
Step 2
Routing Configuration Guide, Cisco IOS XE Everest 16.6.x (Catalyst 9500 Switches)
150
Command or Action
configure terminal
Example:
Device# configure terminal
router isis [area tag]
Example:
Device(config)# router isis tag1
Default Setting
Enabled. Allows Layer 3 Devicees to continue forwarding packets
from a neighboring NSF-capable router during hardware or software
changes.
Maximum PRC wait interval: 5 seconds.
Initial PRC calculation delay after a topology change: 2000 ms.
Hold time between the first and second PRC calculation: 5000 ms.
Disabled.
No area or domain password is defined, and authentication is
disabled.
Disabled. When enabled, if no arguments are entered, the overload
bit is set immediately and remains set until you enter the no
set-overload-bit command.
Maximum interval between consecutive SFPs: 10 seconds.
Initial SFP calculation after a topology change: 5500 ms.
Holdtime between the first and second SFP calculation: 5500 ms.
Disabled.
Purpose
Enters the global configuration mode.
Enables the IS-IS routing for the specified routing
process and enter IS-IS routing configuration mode.
(Optional) Use the area tag argument to identify the
area to which the IS-IS router is assigned. You must
enter a value if you are configuring multiple IS-IS
areas.
Configuring IP Unicast Routing