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:
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DeviceA、DeviceB、DeviceC和DeviceD之间通过IS-IS协议实现IP网络互连。
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DeviceA、DeviceB和DeviceC属于区域10,DeviceD属于区域20。
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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 |
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
4、验证配置结果
# 显示各路由器的IS-IS LSDB信息。
DeviceA
DeviceB
DeviceC
DeviceD
# 显示各路由器的IS-IS路由信息。Level-1设备的路由表中应该有一条缺省路由,且下一跳为Level-1-2设备,Level-2设备应该有所有Level-1和Level-2的路由。
DeviceA
DeviceB
DeviceC
DeviceD