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Integrated IS-IS Commands for CCNP BSCI

Sample Chapter is provided courtesy of Cisco Press.
Date: Dec 7, 2007.

Chapter Information

Chapter Description

This chapter provides information and commands concerning a wide range of Intermediate System-to-Intermediate System (IS-IS) topics related to the CCNP BSCI exam.

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Configuration Example: Multi-Area IS-IS

Figure 4-2 shows the network topology for the configuration that follows, which demonstrates how to configure Integrated IS-IS using the commands covered in this chapter.

Figure 4-2 Multi-Area IS-IS

Mazatlan Router

`Router>``enable`	Moves to privileged mode.
`Router#``configure terminal`	Moves to global configuration mode.
`Router(config)#``hostname Mazatlan`	Assigns the host name to the router.
`Mazatlan(config)#``interface fastethernet 0/0`	Enters interface configuration mode.
`Mazatlan(config-if)#``ip address 192.168.0.1 255.255.255.0`	Assigns an IP address and netmask.
`Mazatlan(config-if)#``ip router isis`	Enables IS-IS routing on this interface.
`Mazatlan(config-if)#``no shutdown`	Enables the interface.
`Mazatlan(config-if)#``int loopback 0`	Moves to interface configuration mode.
`Mazatlan(config-if)#``ip address 172.16.10.1 255.255.255.0`	Assigns an IP address and netmask.
`Mazatlan(config-if)#``ip router isis`	Enables IS-IS routing on this interface.
`Mazatlan(config-if)#``interface serial 0/0`	Moves to interface configuration mode.
`Mazatlan(config-if)#``ip address 10.10.10.1 255.255.255.252`	Assigns an IP address and netmask.
`Mazatlan(config-if)#``ip router isis`	Enables IS-IS routing on this interface.
`Mazatlan(config-if)#``clock rate 56000`	Sets the clock rate.
`Mazatlan(config-if)#``no shutdown`	Enables the interface.
`Mazatlan(config-if)#``exit`	Returns to global configuration mode.
`Mazatlan(config)#``router isis`	Enables the IS-IS routing process.
`Mazatlan(config-router)#``net 49.0001.1111.1111.1111.00`	Configures the NET.
`Mazatlan(config-router)#``is-type level-1-2`	The router will perform both Level 1 and 2 routing.
`Mazatlan(config-router)#``exit`	Returns to global configuration mode.
`Mazatlan(config)#``exit`	Returns to privileged mode.
`Mazatlan#``copy running-config startup-config`	Saves the configuration to NVRAM.

Acapulco Router

`Router>``enable`	Moves to privileged mode.
`Router#``configure terminal`	Moves to global configuration mode.
`Router(config)#``hostname Acapulco`	Assigns the host name to the router.
`Acapulco(config)#``interface fastethernet 0/0`	Enters interface configuration mode.
`Acapulco(config-if)#``ip address 192.168.0.2 255.255.255.0`	Assigns an IP address and netmask.
`Acapulco(config-if)#``ip router isis`	Enables IS-IS routing on this interface.
`Acapulco(config-if)#``no shut`	Enables the interface.
`Acapulco(config-if)#``interface loopback 0`	Moves to interface configuration mode.
`Acapulco(config-if)#``ip address 172.16.20.1 255.255.255.0`	Assigns an IP address and netmask.
`Acapulco(config-if)#``ip router isis`	Enables IS-IS routing on this interface.
`Acapulco(config-if)#``exit`	Returns to global configuration mode.
`Acapulco(config)#``router isis`	Enables the IS-IS routing process.
`Acapulco(config-router)#``net 49.0001.2222.2222.2222.00`	Configures the NET.
`Acapulco(config-router)#``is-type level-1`	The router will perform Level 1 routing only.
`Acapulco(config-router)#``exit`	Returns to global configuration mode.
`Acapulco(config)#``exit`	Returns to privileged mode.
`Acapulco#``copy running-config startup-config`	Saves the configuration to NVRAM.

Cancun Router

`Router>``enable`	Moves to privileged mode.
`Router#``configure terminal`	Moves to global configuration mode.
`Router(config)#``hostname Cancun`	Assigns a host name to the router.
`Cancun(config)#``interface serial 0/0`	Enters interface configuration mode.
`Cancun(config-if)#``ip address 10.10.10.2 255.255.255.252`	Assigns an IP address and netmask.
`Cancun(config-if)#``ip router isis`	Enables IS-IS routing on this interface.
`Cancun(config-if)#``no shutdown`	Starts the interface.
`Cancun(config-if)#``interface loopback 0`	Moves to interface configuration mode.
`Cancun(config-if)#``ip address 172.16.30.1 255.255.255.0`	Assigns an IP address and netmask.
`Cancun(config-if)#``ip router isis`	Enables IS-IS routing on this interface.

`Cancun(config-if)#``exit`	Returns to global configuration mode.
`Cancun(config)#``router isis`	Enables the IS-IS routing process.
`Cancun(config-router)#``net 49.0002.3333.3333.3333.00`	Configures the NET.
`Cancun(config-router)#``is-type level-2-only`	Router will perform Level 2 routing only.
`Cancun(config-router)#``exit`	Returns to global configuration mode.
`Cancun(config)#``exit`	Returns to privileged mode.
`Cancun#``copy running-config startup-config`	Saves the configuration to NVRAM.

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