配置IS-IS基本功能示例

介绍IS-IS基本功能的配置过程，包括在各设备上指定网络实体名、配置level级别和使能IS-IS。

组网需求

如下图所示：

DeviceA、DeviceB、DeviceC和DeviceD之间通过IS-IS协议实现IP网络互连。
DeviceA、DeviceB和DeviceC属于区域10，DeviceD属于区域20。
DeviceA和DeviceB是Level-1设备，DeviceC是Level-1-2设备，DeviceD是Level-2设备。

配置IS-IS基本功能组网图

1、配置各接口的IP地址

设备名称	接口	IP地址
DeviceA	GE0/0/1	10.1.1.2/24
DeviceB	GE0/0/1	10.1.2.2/24
DeviceC	GE0/0/1	10.1.1.1/24
	GE0/0/2	10.1.2.1/24
	GE0/0/3	192.168.0.1/24
DeviceD	GE0/0/1	192.168.0.2/24
DeviceD	GE0/0/2	172.16.1.1/16
AR2	GE0/0/1	172.6.1.2/16

2、配置ISIS基本功能

#配置DeviceA

[~DeviceA] isis 1
[*DeviceA-isis-1] is-level level-1
[*DeviceA-isis-1] network-entity 10.0000.0000.0001.00
[*DeviceA-isis-1] quit
[*DeviceA] interface gigabitethernet 0/0/1
[*DeviceA-GigabitEthernet0/0/1] isis enable 1
[*DeviceA-GigabitEthernet0/0/1] isis circuit-type p2p
[*DeviceA-GigabitEthernet0/0/1] commit
[~DeviceA-GigabitEthernet0/0/1] quit

#配置DeviceB

[~DeviceB] isis 1
[*DeviceB-isis-1] is-level level-1
[*DeviceB-isis-1] network-entity 10.0000.0000.0002.00
[*DeviceB-isis-1] quit
[*DeviceB] interface gigabitethernet 0/0/1
[*DeviceB-GigabitEthernet0/0/1] isis enable 1
[*DeviceB-GigabitEthernet0/0/1] isis circuit-type p2p
[*DeviceA-GigabitEthernet0/0/1] commit
[~DeviceB-GigabitEthernet0/0/1] quit

# 配置DeviceC。

[~DeviceC] isis 1
[*DeviceC-isis-1] is-level level-1-2
[*DeviceC-isis-1] network-entity 10.0000.0000.0003.00
[*DeviceC-isis-1] quit
[*DeviceC] interface gigabitethernet 0/0/1
[*DeviceC-GigabitEthernet0/0/1] isis enable 1
[*DeviceC-GigabitEthernet0/0/1] isis circuit-type p2p
[*DeviceC-GigabitEthernet0/0/1] quit
[*DeviceC] interface gigabitethernet 0/0/2
[*DeviceC-GigabitEthernet0/0/2] isis enable 1
[*DeviceC-GigabitEthernet0/0/2] isis circuit-type p2p
[*DeviceC-GigabitEthernet0/0/2] quit
[*DeviceC] interface gigabitethernet 0/0/3
[*DeviceC-GigabitEthernet0/0/3] isis enable 1
[*DeviceC-GigabitEthernet0/0/3] isis circuit-type p2p
[*DeviceC-GigabitEthernet0/0/3] commit
[~DeviceC-GigabitEthernet0/0/3] quit

#配置DeviceD

[~DeviceD] isis 1
[*DeviceD-isis-1] is-level level-2
[*DeviceD-isis-1] network-entity 20.0000.0000.0004.00
[*DeviceD-isis-1] quit
[*DeviceD] interface gigabitethernet 0/0/2
[*DeviceD-GigabitEthernet0/0/2] isis enable 1
[*DeviceD-GigabitEthernet0/0/2] isis circuit-type p2p
[*DeviceD-GigabitEthernet0/0/2] quit
[*DeviceD] interface gigabitethernet 0/0/1
[*DeviceD-GigabitEthernet0/0/1] isis enable 1
[*DeviceD-GigabitEthernet0/0/1] isis circuit-type p2p
[*DeviceD-GigabitEthernet0/0/1] commit
[~DeviceD-GigabitEthernet0/0/1] quit

3、配置DeviceA和DeviceC验证Hello报文的认证模式和密码。

# 配置DeviceA

[~DeviceA] interface gigabitethernet 0/0/1
[~DeviceA-GigabitEthernet0/0/1] isis authentication-mode simple Helloisis
[*DeviceA-GigabitEthernet0/0/1] commit
[~DeviceA-GigabitEthernet0/0/1] quit

# 配置DeviceC

[~DeviceC] interface gigabitethernet 0/0/1
[~DeviceC-GigabitEthernet0/0/1] isis authentication-mode simple Helloisis
[*DeviceC-GigabitEthernet0/0/1] commit
[~DeviceC-GigabitEthernet0/0/1] quit