Chapter 15 IS-IS Configuration
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5. To designate the interface on which IS-IS runs, use
command ip router isis in interface config mode as shown
in
Table 264.
TABLE 264 IP ROUTER IS-IS COMMAND WINDOW
Command Format
Command
Mode
Command Function
ip router isis interface
config
This enables IS-IS protocol
on an interface
Result: This configures running of IS-IS protocol on an
interface.
E
ND OF STEPS
Before IS-IS configuration, analyze the entire network. Please
determine network topology, whether network needs to be
divided into multiple areas and whether multiple routing
protocols run on the network according to network scale.
A single-area network is used to describe basic IS-IS
configuration in following, as shown in
Figure 92.
FIGURE 92 IS-IS CONFIGURATION EXAMPLE
192.168.1.1/24 192.168.6.1/24
192.168.2.2/24192.168.2.1/24
Area 1
fei_2/4 fei_1/4
fei_2/6 fei_1/3
R1 R2
In the above figure, routers R1 and R2 make up area 1, running
the IS-IS protocol. The detailed IS-IS configuration is displayed
as follows.
Configuration of R1:
Example
ZXR10_R1(config)#router isis
ZXR10_R1(config-router)#area 01
ZXR10_R1(config-router)#system-id 00D0.D0C7.53E0
ZXR10_R1(config-router)#exit
ZXR10_R1(config)#interface fei_2/4
ZXR10_R1(config-if)#ip address 192.168.2.1 255.255.255.0
ZXR10_R1(config-if)#ip router isis
ZXR10_R1(config)#interface fei_2/6
ZXR10_R1(config-if)#ip address 192.168.1.1 255.255.255.0
ZXR10_R1(config-if)#ip router isis