H3C ISIS

发布时间:2019-09-20 07:36:53编辑:auto阅读(1666)

    NET地址转换:

    假设一台路由器使用接口LoopBack0的IP地址168.10.1.1作为Router_ID,则它在IS-IS使用的System ID可通过如下方法转换得到:

    将IP地址168.10.1.1的每一部分都扩展为3位,不足3位的在前面补0;将扩展后的地址168.010.001.001分为3部分,每部分由4位数字组成;

    重新组合的1680.1000.1001就是System ID


    ISIS的简单配置:

    [R1]isis

    [R1-isis-1]network-entity 86.0001.1111.1111.1111.00

    [R1]int vlan 100

    [R1-Vlan-interface100]isis enable

    [R1-Vlan-interface100]int vlan 200

    [R1-Vlan-interface200]isis enable

    [R1-Vlan-interface200]int lo 0

    [R1-LoopBack0]isis enable


    修改接口的优先级:(手工指定DIS)

    [R1]int vlan 100

    [R1-Vlan-interface100]isis dis-priority 100

    缺省情况下,接口上的优先级为64。如果命令中不指定Level-1Level-2,则默认为Level-1Level-2都设置


    查看接口信息:

    [R1-Vlan-interface100]dis isis interface

    路由引入:

    [RouterD] isis 1

    [RouterD–isis-1] address-family ipv4

    [RouterD–isis-1-ipv4] import-route rip level-2


    修改路由器的角色:

    [R2]isis 1

    [R2-isis-1]is-level level-1

    缺省情况下,路由器的类型为level-1-2

    注意:当路由器修改为level-1路由器时,他不会再接收level-2的路由,本地会有一条缺省路由指向level-2路由器


    路由***:

    [R1]isis 1

    [R1-isis-1]address-family ipv4

    [R1-isis-1-ipv4]import-route isis level-2 into level-1

    可以使level-1的路由器接收到level-2的路由


    ISIS的认证:

    [R1]int g0/1

    [R1-GigabitEthernet0/1]isis authentication-mode md5 plain 123

    区域认证:

    [R1]isis 1

    [R1-isis-1]area-authentication-mode md5 plain h3c


    ISIS与BFD的联动:(拓扑见QQ收藏)

    [RouterA] bfd session init-mode active

    [RouterA] interface gigabitethernet 2/1/1

    [RouterA-GigabitEthernet2/1/1] isis bfd enable

    [RouterA-GigabitEthernet2/1/1] bfd min-receive-interval 500

    [RouterA-GigabitEthernet2/1/1] bfd min-transmit-interval 500

    [RouterA-GigabitEthernet2/1/1] bfd detect-multiplier 7

    [RouterB] bfd session init-mode active

    [RouterB] interface gigabitethernet 2/1/1

    [RouterB-GigabitEthernet2/1/1] isis bfd enable

    [RouterB-GigabitEthernet2/1/1] bfd min-receive-interval 500

    [RouterB-GigabitEthernet2/1/1] bfd min-transmit-interval 500

    [RouterB-GigabitEthernet2/1/1] bfd detect-multiplier 8


    ISIS的GE:(平滑重启)

    [R1]isis 1

    [R1-isis-1]graceful-restart

    [R1-isis-1]graceful-restart t2 100 重启间隔,默认为300s

    <R1>dis isis graceful-restart status


    引入外部路由:

    [R3]isis 1

    [R3-isis-1]address-family ipv4

    [R3-isis-1-ipv4]import-route rip level-2

    [R3-rip-1]import-route isis allow-direct 没有这条命令本地路由不会重分发出去

    缺省情况引入的路由类型为level-2


    路由过滤:

    [R1]acl basic 2000

    [R1-acl-ipv4-basic-2000]rule deny source 4.4.4.4 0

    [R1-acl-ipv4-basic-2000]rule permit source any

    [R1-acl-ipv4-basic-2000]quit

    [R1]isis

    [R1-isis-1]address-family ipv4

    [R1-isis-1-ipv4]filter-policy 2000 import


    路由聚合:

    [R1]isis

    [R1-isis-1]address-family ipv4

    [R1-isis-1-ipv4]summary 192.168.8.0 22 level-1-2


    缺省路由配置:

    [R1]isis

    [R1-isis-1]address-family ipv4

    [R1-isis-1-ipv4]default-route-advertise  

    Level-1的缺省路由不需要配置,Level-2的缺省路由需要手工配置


    修改管理距离:

    [R1]isis 1

    [R1-isis-1]address-family ipv4

    [R1-isis-1-ipv4]preference 20   该命令只对路由器本地有效,不影响其他路由器

    缺省情况下,IS-IS路由的优先级为15


    修改路由的cost值:

    [R1-isis-1]int g0/1

    [R1-GigabitEthernet0/1]isis cost 13   默认下不指定类型修改的是level-1

    缺省情况下,IS-IS在接口上的路由权值为10


    修改发送hello的时间:

    [R1]int g0/0

    [R1-GigabitEthernet0/0]isis timer hello 15

    缺省情况下,接口上Hello报文的发送间隔时间为10


    <R1>reset isis peer 2222.2222.2222 1  清除指定邻居

    <R1>reset isis all  清除所有

    <R1>dis isis route  查看路由

    <R1>dis isis peer   查看邻居

    <R1>dis isis lsdb   查看数据库







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