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华三实验大全之ISIS基本配置华三实验大全之ISIS基本配置 实验名称:isis基本配置 实验拓扑: [R1]isis ? INTEGER<1-65535> Process ID vpn-instance VPN Routing/Forwarding Instance <cr> [R1]isis //开启isis功能,默认开启进程1 [R1-isis-1]network-entity ? XX.XXXX. ... .XXXX.XX Network entity title (NET) //网络实体名称的格式 [R1-isis-1]network-entity 01.0000.0000.0001.00 [R1-isis-1]is-level ? //三种路由级别配置 level-1 Set the router to operate as a Level-1 (intra-area) router level-1-2 Set the router to operate as both a Level-1 (intra-area) and Level-2 (inter-area) router level-2 Set the router to operate as a Level-2 (inter-area) router [R1-isis-1]is-level level-1 //配置R1路由级别为level-1 [R1-isis-1]q [R1]int lo0 //开启接口isis功能 [R1-LoopBack0]isis ? circuit-level Set ISIS level for the interface 配置接口level等级 cost Set the interface cost for ISIS 配置isiscost值默认10 enable Enable ISIS processing 开启接口isis功能 ipv6 Configure IPv6 Commands for ISIS 开启接口ipv6的isis功能 [R1-LoopBack0]isis enable ? INTEGER<1-65535> Process ID to attach the interface to <cr> [R1-LoopBack0]isis enable 1 [R1]int s0/2/0 [R1-Serial0/2/0]isis enable 1 配置R2的isis [R2]isis [R2-isis-1]network-entity 01.0000.0000.0002.00 [R2-isis-1]is-level level-1 [R2]int lo0 [R2-LoopBack0]isis enable 1 [R2-LoopBack0]q [R2]int s0/2/0 [R2-Serial0/2/0]isis enable [R2-Serial0/2/0]q 查看命令 查看开启isis的接口 [R1]display isis interface Interface information for ISIS(1) --------------------------------- Interface: LoopBack0 Id IPV4.State IPV6.State MTU Type DIS 001 Up Down 1536 L1/L2 -- Interface: Serial0/2/0 Id IPV4.State IPV6.State MTU Type DIS 002 Up Down 1500 L1/L2 -- 上面可以看出,IPv4的端口是开启的,还有链路类型。 有个问题:为什么我们在接口上应用的是leve1而此处显示的是默认的leve-1-2? 答案: 怎样变为leve-1呢?请看下面 [R1]int s0/2/0 [R1-Serial0/2/0]isis circuit-level ? level-1 Establish level-1 adjacency only level-1-2 Establish level-1-2 adjacency level-2 Establish level-2 adjacency only <cr> [R1-Serial0/2/0]isis circuit-level level-1 [R1-Serial0/2/0]q [R1]display isis interface Interface information for ISIS(1) --------------------------------- Interface: LoopBack0 Id IPV4.State IPV6.State MTU Type DIS 001 Up Down 1536 L1/L2 -- Interface: Serial0/2/0 Id IPV4.State IPV6.State MTU Type DIS 002 Up Down 1500 L1 -- 查看路由表信息 [R1]display ip routing-table Routing Tables: Public Destinations : 7 Routes : 7 Destination/Mask Proto Pre Cost NextHop Interface 1.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0 2.2.2.2/32 ISIS 15 10 192.168.1.2 S0/2/0 127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0 127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0 192.168.1.0/24 Direct 0 0 192.168.1.1 S0/2/0 192.168.1.1/32 Direct 0 0 127.0.0.1 InLoop0 192.168.1.2/32 Direct 0 0 192.168.1.2 S0/2/0 显示IS-IS 的IPv4 路由信息。 [R1]display isis route Route information for ISIS(1) ----------------------------- ISIS(1) IPv4 Level-1 Forwarding Table ------------------------------------- IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags -------------------------------------------------------------------------------- 192.168.1.0/24 10 NULL S0/2/0 Direct D/L/- 1.1.1.1/32 0 NULL Loop0 Direct D/L/- 2.2.2.2/32 10 NULL S0/2/0 192.168.1.2 R/-/- Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set IPV4 Destination :IPV4 目的地址 IntCost :内部路由Cost ExtCost :外部路由Cost ExitInterface :出接口 NextHop :下一跳 Flags: 路由状态标志 D:直连路由 R:该路由是否已放到路由表中 L:是否已经广播 U:路由渗透状态标 显示IS-IS 的链路状态数据库 [R1]display isis lsdb Database information for ISIS(1) -------------------------------- Level-1 Link State Database LSPID Seq Num Checksum Holdtime Length ATT/P/OL ------------------------------------------------------------------------------- 0000.0000.0001.00-00* 0x0000000c 0xb451 1076 58 0/0/0 0000.0000.0001.00-01* 0x00000008 0x11d0 1076 53 0/0/0 0000.0000.0002.00-00 0x0000001f 0xad3e 1132 58 0/0/0 0000.0000.0002.00-01 0x00000012 0x1bb7 1132 53 0/0/0 *-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload LSPID 链路状态报文ID Seq Num LSP 序列号 Checksum LSP 校验和 Holdtime LSP 保持时间 Length LSP 长度 ATT/P/OL Attach bit(ATT):连接位;Partition bit(P): 分区位;Overload bit(OL):过载位。 显示IS-IS 当前的基本配置参数 [R1]display isis brief ISIS (1) Protocol Brief Information : network-entity: 01.0000.0000.0001.00 is-level :level-1 cost-style: narrow preference : 15 Lsp-length receive : 1497 Lsp-length originate : level-1 1497 level-2 1497 Timers: lsp-max-age: 1200 lsp-refresh: 900 Interval between SPFs: 10
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