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9-6
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 9 Configuring IS-IS
Licensing Requirements for IS-IS
Licensing Requirements for IS-IS
The following table shows the licensing requirements for this feature:
Prerequisites for IS-IS
IS-IS has the following prerequisites:
• You must enable the IS-IS feature (see the “Enabling the IS-IS Feature” section on page 9-7).
• If you configure VDCs, install the Advanced Services license and enter the desired VDC (see the
Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release 4.x).
Configuration Guidelines and Limitations
IS-IS has the following configuration guidelines and limitations:
• You can configure a maximum of four IS-IS instances per VDC.
• Because the default reference bandwidth is different for Cisco NX-OS and Cisco IOS, the advertised
tunnel IS-IS metric is different for these two operating systems.
Configuring IS-IS
To configure IS-IS, follow these steps:
Step 1 Enable the IS-IS feature (see the “Enabling the IS-IS Feature” section on page 9-7).
Step 2 Create an IS-IS instance (see the “Creating an IS-IS Instance” section on page 9-8).
Step 3 Add an interface to the IS-IS instance (see the “Configuring IS-IS on an Interface” section on page 9-11).
Step 4 Configure optional features, such as authentication, mesh groups, and dynamic host exchange.
This section contains the following topics:
• IS-IS Configuration Modes, page 9-7
• Enabling the IS-IS Feature, page 9-7
• Creating an IS-IS Instance, page 9-8
• Restarting an IS-IS Instance, page 9-10
• Shutting Down IS-IS, page 9-11
• Configuring IS-IS on an Interface, page 9-11
Product License Requirement
NX-OS IS-IS requires an Enterprise Services license. For a complete explanation of the NX-OS licensing scheme
and how to obtain and apply licenses, see the Cisco NX-OS Licensing Guide.
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