User guide

Configuring IS-IS Configuring IS-IS
OmniSwitch AOS Release 7 Advanced Routing Configuration Guide March 2015 page 3-15
Preparing the Network for IS-IS
IS-IS operates over normal switch functions, using existing ports, virtual ports, VLANs, etc. However, the
following network components should already be configured:
• Configure VLANs that are to be used in the IS-IS network. VLANs should be created for all the
connected devices that will participate in the IS-IS network. VLAN configuration is described in
“Configuring VLANs” in the OmniSwitch AOS Release 7 Network Configuration Guide.
• Assign IP interfaces to the VLANs. IP interfaces or router ports, must be assigned to the VLAN.
Assigning IP interfaces is described in “Configuring IP” in the OmniSwitch AOS Release 7 Network
Configuration Guide.
• Assign ports to the VLANs. The physical ports participating in the IS-IS network must be assigned to
the created VLANs. Assigning ports to a VLAN is described in “Assigning Ports to VLANs” in the
OmniSwitch AOS Release 7 Network Configuration Guide.
• Set the area ID (optional). The routers participating in the IS-IS network must be assigned an area
identification number. The area ID is a part of the Network Service Access Point (NSAP) address,
which identifies a point of connection to the network, such as a router interface. The area identification
number assignment is discussed in “Creating an IS-IS Area ID” on page 3-16.
Activating IS-IS
To run IS-IS on the router, the advanced routing image must be installed. For information on how to
install image files, refer to the OmniSwitch AOS Release 7 Switch Management Guide.
After the image file has been installed onto the router, you need to load the IS-IS software into the
memory and enable it, as described below:
Loading the Software
To load the IS-IS software into the router’s running configuration, enter the ip load isis command at the
system prompt:
-> ip load isis
The IS-IS software is now loaded into the memory, and can be enabled. IS-IS is not loaded on the switch
by default.
Enabling IS-IS
Once the IS-IS software has been loaded into the router’s running configuration (either through the CLI or
on startup), it must be enabled. To enable IS-IS on a router, enter the ip isis admin-state command at the
CLI prompt, as shown:
-> ip isis admin-state enable
Once IS-IS is enabled, you can begin to set up IS-IS parameters. To disable IS-IS, enter the following:
-> ip isis admin-state disable